There are 29 OSHA-approved State Plans — 22 covering both private and public sectors and 7 covering public employees only; everywhere else, private employers fall under federal OSHA. State Plans must be at least as effective as federal OSHA and some set higher penalties or extra requirements. These articles cover who enforces where, and how the rules differ.

HCS 2024 Deadlines by State Plan: Why November 20, 2026 Is the Wrong Date in Most of Them
We read twenty-two state plans instead of assuming they match federal. Washington's substances deadline was July 20, 2026, already past, and on the face of their own rules Michigan and Minnesota land on that same date, not November 20. California has not adopted HCS 2024 at all. What each rule actually says, and how to check yours in ten minutes.

The HazCom Enforcement Paradox: #2 Everywhere, 9th in Construction
Hazard Communication is OSHA's second most-cited standard across all industries — yet only ninth in construction. And one state, Maryland, issues nearly as many construction HazCom citations as the entire federal system — 609 against 698, from a single state. An FY2025 data analysis of where the chemical-safety citations actually land.

Every State Has an OSHA Enforcement Signature: A FY2025 Heatmap
Break FY2025 construction citations down by state AND by standard, and a pattern appears that no single ranking captures: every state agency has an enforcement 'signature.' Maryland hammers labels and ladders; Virginia concentrates on scaffolds; Tennessee spreads across chemicals. An original heatmap of where each state cites what.

The $7,000 vs. $25,000 Divide: How OSHA Penalty Caps Vary by State
Most people assume State-Plan OSHA programs are stricter than federal. The data says otherwise: the same serious violation is capped at $25,000 in California but just $7,000 in Michigan, Kentucky, Indiana, and Tennessee. Here is the verified 2026 penalty-cap map and why it matters.

Volume vs. Value: How State OSHA Programs Enforce Differently
The 22 State-Plan OSHA programs don't just set different penalty caps — they enforce in fundamentally different styles. Michigan writes thousands of low-dollar construction citations; Nevada writes a few hundred high-dollar ones. An FY2025 data analysis of enforcement volume versus value across 21 state agencies.

OSHA State Plans Explained: Full vs Public-Sector-Only vs Federal (2026 Map)
There are 29 OSHA State Plans in 2026: 22 cover both private and public workers, 7 cover public-sector only. Learn what that means for compliance, penalties, and which rules apply.

State HazCom Plans: The 29 OSHA-Approved Plans (and the Public-Sector-Only Trap)
There are 29 OSHA-approved State Plans — 22 full plans (21 states plus Puerto Rico) and 7 public-sector-only plans. Learn which regulate private employers, where federal OSHA still applies, and why Washington's HazCom deadline has already passed while California has not adopted the 2024 rule at all.