This standard applies to most workplaces where the indoor temperature reaches 82°F. It establishes required safety measures for indoor workplaces.The employer's overall safety plan must be in place, accessible to employees, and must include a heat illness safety competent. The new regulation applies to most California workplaces where the indoor temperature reaches 82°F or higher (e.g. California's Heat Illness Prevention Standard requires employers to provide training, water, shade, and planning. An employee working in a hot indoor manufacturing workplace with tools. California. California's Heat Illness Prevention Standard requires employers to provide training, water, shade, and planning. Provide your workers with information so they understand the risks of heat exposure and what actions to take. Keep materials easily accessible in the workplace. Goodman Manufacturing offers a range of affordable air conditioning, packaged units, heat pumps and gas furnaces for residential heating and cooling needs.