Cal/OSHA Revises Proposed Indoor Heat Illness Prevention Standard

As the temperatures cool outside, the regulations for indoor heat illness prevention are heating up. Cal/OSHA has been working on a proposed Indoor Heat Illness Prevention Standard since 2017. In the spring Cal/OSHA Standards Board published a draft standard and announced a public hearing on Heat Illness Prevention in Indoor Places of Employment.

On November 9, 2023, the Board issued its Second Notice of Proposed Modifications. These revisions were the result of further comments from stakeholders and Board staff.

Here are some of the proposed modifications:

The Board is accepting written comments on the modifications of the text and the changes to documents until 5:00 p.m. on November 28, 2023, at the Occupational Safety and Health Standards Board, 2520 Venture Oaks Way, Suite 350, Sacramento, California 95833 or e-mailed to

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National Law Review, Volumess XIII, Number 321