This week, OSHA began public hearings on its proposed national heat hazard rule, the first federal standard aimed at protecting indoor and outdoor workers from heat-related illness. The rule would trigger protections at 80°F and stronger controls at 90°F, requiring employers to implement heat-risk plans with engineering and administrative measures, hydration, rest, shade, and acclimatization protocols.

The informal hearings, part of OSHA’s seven-step rulemaking process, run through July 2 and include testimony from labor advocates supporting the rule and business groups warning that the rule should allow flexibility for regional climates and operational needs.

Absent a federal standard, many states maintain their own heat rules, creating inconsistent protections across jurisdictions. 6/16/2025