On May 18, 2023, the Cal/OSHA Standards Board (Board) held a public hearing to consider modifications to its Heat Illness Prevention in Indoor Places of Employment standard. After receiving oral and written public comment on the proposed revisions, the proposed standard was modified and reissued for public comment.  

Key provisions of the modified regulations include: 

• Removal of criteria used to apply outdoor heat regulations to certain indoor locations.  
• Creating a compliance exception where an employee is exposed to “incidental heat exposure…above 82 degrees Fahrenheit for less than 15 mins in any 60-minute period….”  
• Making clear that where an employee’s job requires them to move between indoor and outdoor locations, both regulations apply.  

The current 15-day comment period ends on November 28, 2023. Board approval in the early part of 2024 could likely see the new regulations in place by the summer of 2024. For information on providing comment, please review the Board’s Notice.