The California Division of Occupational Safety and Health (Cal/OSHA) approved a long-awaited indoor heat-illness standard on June 20, 2024. Before going live, the Office of Administrative Law (OAL) will have 30 days to approve or deny the standard. Cal/OSHA has requested that it go into effective immediately after OAL approval, so it could very well go live in a month. The standard, Section 3396, requires employers with indoor workspaces of 87 degrees Fahrenheit and above to reduce the room temperature and offer workers other cool-down options. For indoor workers who wear poor ventilating protective clothing or work near a heat source, employers will instead have to provide cool-down options when the inside temperature reaches 82 degrees Fahrenheit. What California Employers Will Need to Prepare While California has had an outdoor heat illness standard since 2006, indoor workers have been left unprotected. Cal/OSHA has been developing this rule since 2017 but has se