Federal OSHA jurisdiction (no state plan). Enforced by U.S. Dept. of Labor, OSHA (federal). Verified on the primary source, re-checked weekly.
Missouri has no OSHA-approved State Plan; federal OSHA regulates workplace safety directly for private-sector employers statewide through its area office.
Source: primary document
Statewide layer. County and city amendments sit on top; the building view resolves them from your ZIP.
In force, nothing scheduled
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.
Federal OSHA jurisdiction (no state plan). Missouri has no OSHA-approved State Plan; federal OSHA regulates workplace safety directly for private-sector employers statewide through its area office.
U.S. Dept. of Labor, OSHA (federal).
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.
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