The Occupational Safety and Health Administration (OSHA) has issued an Advance Notice of Proposed Rulemaking (ANPRM) for Heat Injury and Illness Prevention in Outdoor and Indoor Work Settings, a significant step toward a federal heat standard. The ANPRM was published on Oct. 27 and initiated a 60-day public comment period allowing OSHA to gather information, diverse perspectives and technical expertise on topics including heat stress thresholds, heat acclimatization planning, and exposure monitoring. The comment period has been extended until Jan. 26, 2022.

OSHA’s notice-and-comment rulemaking process relies heavily on input from the public, including affected workers, the regulated community, and other stakeholders. OSHA encourages members of the public to review and submit comments on the ANPRM during the public comment period. The ANPRM is available on the Federal Register web page at and at, which is the Federal e-Rulemaking Portal.