Update, October 16, 2026
OSHA plans a revised heat proposal
OSHA's current regulatory agenda lists a supplemental proposed rule on heat injury and illness prevention for December 2026, with final action in October 2027. A supplemental proposal means a revised text and another comment period before any final rule.
On your exam?
Watch
There is still no federal heat standard to test. Heat stress science and the General Duty Clause are what the exam covers.
Judged against ASP11, CSP11 and CHST5, the outlines in effect on October 16, 2026.
- Status
- Proposed
- From
- OSHA
- Citation
- RIN 1218-AD39
- Last checked
- October 16, 2026
Key dates
- October 30, 2025Post-hearing comments on the 2024 proposal close
- December 2026 (expected)Supplemental proposed rule (regulatory agenda)
- October 2027 (expected)Final action (regulatory agenda)
What changed
After the 2025 hearing, OSHA's regulatory agenda added a supplemental proposed rule to the heat timeline instead of going straight to a final rule.
What it means for you
Nothing changes on the exam. For work, the timeline means no federal heat standard before late 2027 at the earliest, if the agenda's dates hold. See OSHA heat rule: still a proposal for the full history.
Practice what's tested now
Sources
- Reginfo.gov: Unified Agenda entry, RIN 1218-AD39
- Federal Register: post-hearing comment period extended (Sept 25, 2025)
Published October 16, 2026. Last checked against these sources October 16, 2026. Something out of date? Email hello@passcited.com.