Occupational heat stress

Occupational heat stress is the net load to which a worker is exposed from the combined contributions of metabolic heat, environmental factors, and clothing worn, which results in an increase in heat storage in the body.^[1] Heat stress can result in heat-related illnesses, such as heat stroke, hyperthermia, heat exhaustion, heat cramps, heat rashes, and chronic kidney disease (CKD).^[2][3] Although heat exhaustion is less severe, heat stroke is a medical emergency and requires emergency treatment, which if not provided, can lead to death.^[4]

Heat stress causes illness but also may account for an increase in workplace accidents, and a decrease in worker productivity.^[5] Worker injuries attributable to heat include those caused by: sweaty palms, fogged-up safety glasses, and dizziness.^[2] Burns may also occur as a result of accidental contact with hot surfaces or steam. In the United States, occupational heat stress is becoming more significant as the average temperatures increase but remains overlooked. There are few studies and regulations regarding heat exposure of workers.^[6]