IQ may be a predictor of who suffers an injury or illness at work. A 68-year population study published in 20171 found that IQ is inversely associated with all major causes of death, including accidents. The study, and others like it2 with statistical power (one million people), find that people with high IQ make better in-the-moment and life-long risk decisions that increase their chance of survival.
The controversy that dumb people make poor risk decisions and are, therefore, more injury prone has raged for decades. Regardless of the political correctness or complexity, you need to pay more attention to how IQ impacts safety and health programs.