New research has revealed that US government agencies have been significantly undercounting workplace injuries cause by extreme heat. The paper estimated that between 2001 and 2018, the number of heat-related injuries were about 24,800 each year, hundreds of times higher than California’s occupational safety division count of 60 heat-related injuries annually. The risk of heat-related injury is also seen increasing at low-wage jobs. The research found that workers who lived in the poorest 20% of zip codes suffered 5.2 injuries per 100 taxpayers in comparison to 2.2 injuries in the wealthiest 20% of zip codes. Last week one of the researchers testified to Congress that the cost of heat-related injuries stretches beyond workers suffering.
See "Research finds that heat-related injuries are undercounted", Alvin Chang and Aliya Uteuova, The Guardian, July 21, 2021