---
title: "What Is OSHA Heat Rule? Heat Stress and Hydration Glossary"
description: "The OSHA heat rule is a proposed federal standard, Heat Injury and Illness Prevention in Outdoor and Indoor Work Settings. As of November 2026 it is not final."
url: https://jmarsolutions.multisites.ai/glossary/osha-heat-rule
publisher: JMAR Solutions
phone: +1-214-632-7780
quote: https://jmarsolutions.multisites.ai/contact
---

Regulation

# OSHA heat rule

The OSHA heat rule is a proposed federal standard, Heat Injury and Illness Prevention in Outdoor and Indoor Work Settings. As of November 2026 it is not final.

The OSHA heat rule is a proposal, not a final law. OSHA published the Notice of Proposed Rulemaking on August 30, 2024. The proposed standard would require employers to create a plan to evaluate and control heat hazards.

The public hearing ran June 16 to July 2, 2025, and the post-hearing comment period ended October 30, 2025. As of November 2026, OSHA's rulemaking page lists it as a proposed rule with no final standard. Until then, OSHA enforces heat hazards under the [General Duty Clause](https://jmarsolutions.multisites.ai/glossary/general-duty-clause) and the [Heat NEP](https://jmarsolutions.multisites.ai/glossary/osha-heat-nep). Several states have their own heat rules. Track updates on our [OSHA heat rules page](https://jmarsolutions.multisites.ai/osha-heat-rules). This is not legal advice.

[From JMAR SolutionsHydration programs and toolbox talks for crews](https://jmarsolutions.multisites.ai/hydration-programs)

## Related terms

-   [OSHA heat NEP](https://jmarsolutions.multisites.ai/glossary/osha-heat-nep)
-   [General Duty Clause](https://jmarsolutions.multisites.ai/glossary/general-duty-clause)
-   [Heat illness prevention plan](https://jmarsolutions.multisites.ai/glossary/heat-illness-prevention-plan)
-   [NIOSH](https://jmarsolutions.multisites.ai/glossary/niosh)

## Sources

1.  [OSHA: Heat Injury and Illness Prevention Rulemaking](https://www.osha.gov/heat-exposure/rulemaking)
2.  [OSHA: Heat Injury and Illness Prevention Rulemaking](https://www.osha.gov/heat-exposure/rulemaking)

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