Boilermaker
Boilermaker and boiler operator are different trades, and the confusion costs people time. You build, install, repair, and dismantle boilers; a stationary engineer runs them. States license the operator, not you — there's no boilermaker license anywhere. What actually governs your work is code: ASME Section IX certification for pressure vessel and boiler welding, which is employer- and code-driven and travels nationally.
Where can I take my boilermaker license?
Pick the state you're licensed in. You'll get the states that will consider that license — which is not the same as a free transfer.
FAQ
I saw my state licenses boiler workers. Do I need that license?
Probably not — check which occupation it covers. Many states license boiler operators or stationary engineers, and that's a different job: operating boilers in service rather than building and repairing them. A boiler operator license does not authorize construction work, and it isn't the credential a boilermaker needs. What matters for you is ASME Section IX welding certification — Ohio, for instance, specifically requires ASME certification for boiler and pressure vessel welding through its industrial compliance division. Asbestos work is worth flagging too, since boilermaker scope routinely includes abatement, and that carries separate state certification requirements everywhere.
Boilermaker rules in every state
Researched 2026-07-21 to 2026-07-24One entry per state, in alphabetical order. Each one covers who licenses the trade there, what it takes to qualify, and whether that state accepts a license earned somewhere else.
- Reciprocity — accepts some out-of-state licenses
- No reciprocity — licensed here, but no out-of-state license is accepted
- Nothing to reciprocate — no state license exists here
- Not established — we could not verify this state's position — treat it as an open question, not a no
- secondarydrawn from consistent secondary sources, not confirmed on the agency's own page
Alabama
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Alabama does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Alabama issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Alaska
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Alaska does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Alaska issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Arizona
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Arizona does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Arizona issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Arkansas
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Arkansas does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Arkansas issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
California
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
California does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because California issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Colorado
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Colorado does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Colorado issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Connecticut
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Connecticut does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Connecticut issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Delaware
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Delaware does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Delaware issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Florida
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Florida does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Florida issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Georgia
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Georgia does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Georgia issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Hawaii
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Hawaii does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Hawaii issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Idaho
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Idaho does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Idaho issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Illinois
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Illinois does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Illinois issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Indiana
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Indiana does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Indiana issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Iowa
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Iowa does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Iowa issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Kansas
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Kansas does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Kansas issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Kentucky
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Kentucky does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Kentucky issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Louisiana
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Louisiana does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Louisiana issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Maine
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Maine does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Maine issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Maryland
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Maryland does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Maryland issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Massachusetts
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Massachusetts does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Massachusetts issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Michigan
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Michigan does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Michigan issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Minnesota
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Minnesota does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Minnesota issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Mississippi
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Mississippi does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Mississippi issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Missouri
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Missouri does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Missouri issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Montana
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Montana does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Montana issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Nebraska
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Nebraska does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Nebraska issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Nevada
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Nevada does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Nevada issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
New Hampshire
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
New Hampshire does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because New Hampshire issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
New Jersey
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
New Jersey does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because New Jersey issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
New Mexico
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
New Mexico does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because New Mexico issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
New York
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
New York does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because New York issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
North Carolina
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
North Carolina does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because North Carolina issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
North Dakota
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
North Dakota does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because North Dakota issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Ohio
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Ohio does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Ohio issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Oklahoma
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Oklahoma does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Oklahoma issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Oregon
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Oregon does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Oregon issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Pennsylvania
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Pennsylvania does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Pennsylvania issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Rhode Island
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Rhode Island does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Rhode Island issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
South Carolina
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
South Carolina does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because South Carolina issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
South Dakota
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
South Dakota does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because South Dakota issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Tennessee
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Tennessee does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Tennessee issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Texas
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Texas does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Texas issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Utah
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Utah does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Utah issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Vermont
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Vermont does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Vermont issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Virginia
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Virginia does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Virginia issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Washington
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Washington does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Washington issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
West Virginia
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
West Virginia does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because West Virginia issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Wisconsin
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Wisconsin does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Wisconsin issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)
Wyoming
No license — state or localNo license exists for this trade at any level — state or local — in this state.
No state license for the boilermaker trade itself. Registered apprenticeship through the International Brotherhood of Boilermakers or an equivalent DOL-registered program. ASME Section IX welding certification is the controlling credential for pressure vessel and boiler welding scope - employer- and code-driven, not state-issued, and portable nationwide. Asbestos abatement work carries separate state certification requirements in most states.
Wyoming does not license boilermakers - no US state does. This is a registered-apprenticeship trade, and the credential that travels is your U.S. Dept. Of Labor apprenticeship completion certificate, which is federally registered and valid nationwide. There's no reciprocity question here because there'S no state license to transfer. Note the common confusion: many states license boiler operators, but that is a different occupation from boilermaker.
What applies instead: Because Wyoming issues no boilermaker license, there is no state credential to reciprocate. The DOL-registered apprenticeship certificate is portable nationwide by design - it is a federal registration, not a state one.
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/boilermaker-apprenticeship (secondary, accessed 2026-07-24)
- https://www.buildersguild.org/index.php/union-apprenticeships/apprenticeships/millwright (secondary, accessed 2026-07-24)