MIOSHA State Plan covering private-sector and state/local government employers. Enforced by Michigan Department of Labor and Economic Opportunity - MIOSHA; federal OSHA for excluded employers. Verified on the primary source, re-checked weekly.
Initially approved Oct 3, 1973; administered by the Department of Labor and Economic Opportunity. Federal employers, maritime work, tribal enterprises on reservations and in-flight aircraft cabin crews stay under federal OSHA.
Source: primary document
Statewide layer. County and city amendments sit on top; the building view resolves them from your ZIP.
In force; recent MIOSHA updates: Hazard Communication (adopts 2024 federal HCS) effective Aug 12, 2025; recordkeeping Part 11 effective Mar 23, 2026
The federal layer applies in every state: OSHA's Hazard Communication update (91 FR 1695) sets November 20, 2026 for substances and May 19, 2028 for mixtures. State-plan states enforce it through their own agency.
MIOSHA State Plan covering private-sector and state/local government employers. Initially approved Oct 3, 1973; administered by the Department of Labor and Economic Opportunity. Federal employers, maritime work, tribal enterprises on reservations and in-flight aircraft cabin crews stay under federal OSHA.
Michigan Department of Labor and Economic Opportunity - MIOSHA; federal OSHA for excluded employers.
Nothing is scheduled. The rule above stays in force until the state adopts a newer edition or amends the program; AHJ Radar re-checks the source weekly.
One address, every authority that can cite it, and a record of who saw what. Cancel anytime. Public pages stay free.