Most employers do not need to keep a specific workplace temperature under federal Occupational Safety and Health Administration (OSHA) regulations. The new rules require employers to provide heat safety training, cooling areas and water when the indoor temperature reaches 82 degrees.California employers must protect their workers from the hazards of excessive heat exposure. While Southern California might be known for having a temperate climate, workers could still be subjected to extreme temperatures. The Standard applies to all indoor work areas where the temperature equals or exceeds 82° Fahrenheit when employees are present. "Indoor״ refers to a. Outdoor workplaces in California have been regulated to prevent heat illness since 2006. It is essential for supervisors and employees to be well-prepared for these elevated temperatures. Are living, learning and working. Lea esta historia en Español.