The U.S. Department of Labor’s Occupational Safety and Health Administration (OSHA) has found that Union Pacific Railroad Co. violated federal railroad safety law when it removed a North Little Rock employee from service and later fired him after he raised concerns about lightning near the workplace.
https://katv.com/news/local/osha-union-pacific-broke-safety-law-by-firing-nlr-worker-who-flagged-lightning-risk