According to OSHA, there are no specific regulations that require employers to maintain a certain workplace temperature. However, OSHA recommends that employers keep the thermostat between 68 and 78 degrees Fahrenheit to protect employees from having to work in uncomfortable temperatures. The acceptable range for indoor humidity is between 20 and 60 percent. The minimum temperature for indoor workplaces is 68 degrees Fahrenheit and the maximum is 76 degrees Fahrenheit. These standards were set in 1975 in consultation with the American Society of Heating, Refrigerating, and Air-Conditioning Engineers. OSHA regulations do kick in when temperatures are so severe that they could lead to heat stress, hypothermia, or other dangerous conditions. To determine whether temperatures are extreme, OSHA uses heat stress monitors to measure a work site’s temperature and humidity levels, its air circulation, and the amount of heat radiating from a furnace, blower, or other heat source.