Boilermaker License Requirements in California
License Not RequiredLast verified March 24, 2026
Agency And Exam
Issuing agency: California Department of Industrial Relations - Division of Occupational Safety and Health (Cal/OSHA)
Official licensing agency website
Exam provider: State-administered
Reciprocity And License Levels
License levels
Not listed
Reciprocity states
None listed
Notes
California does not require a statewide occupational license for individual boilermakers. Boiler and pressure vessel safety is regulated by Cal/OSHA's Pressure Vessel Unit. Workers must comply with Cal/OSHA regulations, but no individual boilermaker license is issued at the state level.