California's Heat Illness Prevention Standard requires employers to provide training, water, shade, and planning. Workers facing extreme heat must have access to sufficient water, rest, shade and sanitation.There are no rules or regulations at the city, county or state level to protect workers from the heat. This standard applies to most workplaces where the indoor temperature reaches 82°F. It establishes required safety measures for indoor workplaces. If you get heat stroke because of being forced to work in an unsafe environment, report it to your state's OSHA office. Washington, Minnesota, California, Oregon, and Colorado have specific laws governing occupational heat exposure. The proposed standard is broad and covers all employers with employees working indoors or outdoors when the heat index is 80°F or higher. Some states go above and beyond OSHA's regulations to protect employees from heat-related illnesses. "Nothing in Texas or federal law prohibits employers from allowing workers to take water breaks in hot weather.