Boilermaker License Requirements in Missouri
License Not RequiredLast verified March 24, 2026
Agency And Exam
Issuing agency: Missouri Department of Labor and Industrial Relations
Official licensing agency website
Exam provider: State-administered
Reciprocity And License Levels
License levels
Not listed
Reciprocity states
None listed
Notes
Missouri does not require a statewide occupational license for individual boilermakers. Some cities in Missouri, such as Kansas City and St. Louis, may have local boiler operator licensing requirements. Verify with local jurisdictions for applicable requirements.