Current federal transition dates

Match the deadline to the substance, mixture and employer task.

OSHA extended its HazCom 2024 transition dates in January 2026. The federal deadlines below separate supplier requirements from necessary workplace-label, program and new-hazard training updates.

Federal HazCom 2024 compliance dates
TaskCompliance date
Manufacturers, importers and distributors evaluating substances: modified provisionsMay 19, 2026
Employers, substances: necessary workplace-label, program and new-hazard training updatesNovember 20, 2026
Manufacturers, importers and distributors evaluating mixtures: modified provisionsNovember 19, 2027
Employers, mixtures: necessary workplace-label, program and new-hazard training updatesMay 19, 2028

Existing hazard-communication duties continue during the applicable transition. Check state-plan and site-specific requirements for your workplace.

Sources checked October 8, 2026: 29 CFR 1910.1200(j) and OSHA extension notice.