According to Californias Division of Occupational Safety and Health (Cal/OSHA), indoor workplaces must maintain a temperature between 68 and 78 degrees Fahrenheit, depending on the type of work being performed. This temperature range is considered safe and comfortable for most workers. However, there is no federal Occupational Safety and Health Administration (OSHA) regulation that requires employers to maintain a specific workplace temperature.

When the nature of the work that you are doing mandates a temperature that is less than 60 degrees, your employer is supposed to provide you with a heated room where you can go to get warm. The room is supposed to be kept at a temperature of at least 68 degrees. Resting rooms, toilet rooms, and changing rooms are supposed to be at least 68 degrees during the hours of use.

It is important to note that OSHA regulations do kick in when temperatures are so severe that they could lead to heat stress, hypothermia, or other dangerous conditions. OSHA recommends that employers keep the thermostat between 68 and 78 degrees Fahrenheit to protect employees from having to work in uncomfortable temperatures.

In summary, the minimum temperature permitted in an office environment is not specified by OSHA, but indoor workplaces in California must maintain a temperature between 68 and 78 degrees Fahrenheit, depending on the type of work being performed.