This standard applies to most workplaces where the indoor temperature reaches 82°F. It establishes required safety measures for indoor workplaces.Most employers do not need to keep a specific workplace temperature under federal Occupational Safety and Health Administration (OSHA) regulations. California is finally set to approve a workplace safety rule to protect employees from excessive heat indoors. Why is it five years late? Crafton Hills College. Unsafe working conditions are always dangerous, but with the extreme heat, they can be lifethreatening. Daniel Rivera was soaked in sweat when he got into his car in San Bernardino, California, one evening last month. San Bernardino County Department of Public Health Extreme Heat Information and Resources Did You Know? If you have suffered from any type of discrimination or harassment in the workplace, contact our skilled San Bernardino employment law attorneys today.