Heat Illness Prevention: California Worker Protection Laws in 2025

According to the National Safety Council, the Workers Compensation Research Institute found a pattern of heat-related illness incidents across the United States from 2013 to 2020 in worker compensation data. Heat illness incidents were seven times greater than normal during outdoor temperatures between 90 and 95 degrees Fahrenheit and 18 times higher with temperatures above the 100-degree mark. Even temperatures above 80 degrees Fahrenheit could cause heat-related illness. New workers and those under the age of 35 were the least prepared to handle hot environmental or exertion conditions.

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