OSHA has issued COVID-19 guidance on the Use of Cloth Face Coverings while Working Indoors and Outdoors in Hot and Humid Conditions.
During the COVID-19 pandemic, OSHA generally recommends that employers encourage workers to wear cloth face coverings at work to help reduce the spread of COVID-19. However, workers who wear cloth face coverings in hot and humid environments or while performing strenuous activities indoors, such as those manufacturing and warehousing, can find cloth face coverings to be uncomfortable.
Occupational risk factors for heat illness include heavy physical activity, warm or hot environmental conditions, lack of acclimatization, and wearing clothing that holds in body heat. Hazardous heat exposure can occur indoors or outdoors during any season.
Employers should follow the best practices for wearing cloth coverings indoors and outdoors to protect against the spread of COVID-19 and the risk of heat-related illness.