Boilermaker License Requirements in Illinois
License RequiredLast verified March 24, 2026
Agency And Exam
Issuing agency: Illinois Department of Labor
Official licensing agency website
Exam provider: State-administered
Reciprocity And License Levels
License levels
Boiler Operator - Low PressureBoiler Operator - High PressureBoiler Operator - Engineer
Reciprocity states
None listed
Notes
Illinois requires licensure for boiler operators under the Illinois Department of Labor. The Boiler and Pressure Vessel Safety Act governs licensing. Applicants must meet experience requirements and pass state-administered examinations. Boilermakers performing installation and repair should verify contractor requirements. Verify current license tiers with the Illinois Department of Labor.