California's Heat Illness Prevention Standard requires employers to provide training, water, shade, and planning. Encourage workers to drink water every 15 minutes.Washington, Minnesota, California, Oregon, and Colorado have specific laws governing occupational heat exposure. This standard applies to most workplaces where the indoor temperature reaches 82°F. It establishes required safety measures for indoor workplaces. As of July 24, employers in the state must adopt safety measures that go into effect in most cases when indoor temperatures reach 82°F. As of July 2024, five states have permanent occupational heat stress standards for the workplace: California, Colorado, Minnesota, Oregon, and Washington. This map provides national and state snapshots of existing occupational heat standards, heat standards under development, and active heat standard legislation. The Occupational Safety and Health Administration (OSHA) has no official rules or limits on temperature regulation in the workplace. In the summer of 2023, the U.S. Department of Labor issued its first heat hazard alert.