OSHA’s Heat Illness Rule Is Stalled — But Enforcement Isn’t Waiting

6 min read

A lot of employers have heard that OSHA has been working on a federal heat illness standard and concluded, reasonably, that nothing is enforceable yet. That’s only half true. The formal rule is still stuck in process — but OSHA is actively enforcing heat safety right now under a different mechanism, and that distinction matters if your crews work outdoors or in hot indoor environments.

Where the proposed rule actually stands

OSHA published its Heat Injury and Illness Prevention proposed rule on August 30, 2024. The public comment period closed January 14, 2025, followed by informal public hearings held from June 16 through July 2, 2025. The post-hearing comment period closed October 30, 2025. As of now, the rule remains unfinalized, with no officially announced target date for a final standard. Rulemaking of this scope routinely takes years, and this one is no exception.

The part employers tend to miss

While the formal standard is pending, OSHA issued a revised Heat National Emphasis Program (NEP) on April 10, 2026. A National Emphasis Program isn’t a new regulation — it’s a directive that concentrates inspection and outreach resources on a specific hazard, using OSHA’s existing General Duty Clause authority to cite employers who fail to protect workers from recognized heat hazards. In plain terms: there’s no new heat-specific rule on the books yet, but OSHA is actively looking for heat hazards during inspections and can still cite you for them under existing law.

What the NEP means for targeting

Heat NEPs typically direct increased inspection activity in industries and job tasks with known heat exposure — construction, warehousing, manufacturing near furnaces or ovens, agriculture, and outdoor field work among them — especially during high heat-index days. If your operation falls into any of those categories, the odds of a heat-focused inspection touchpoint go up, not down, while the formal rule remains in limbo.

What to have in place now

Employers don’t need to wait for a final rule to build a defensible heat safety program. The core elements a General Duty Clause citation looks for are consistent with what the proposed rule itself outlines: access to water, planned rest breaks, acclimatization protocols for new or returning workers, heat-illness recognition training for supervisors and crews, and a written emergency response plan for heat-related symptoms. Documenting these now, before the standard is finalized, is also documentation you’ll already have in hand once it is.