Which organization regulates Workers Compensation at the federal level in the U.S.?

The Department of Labor is the correct answer because it plays a critical role in regulating workers' compensation at the federal level. Specifically, it oversees the administration of various labor laws, including those related to workplace safety and health as well as benefits for workers who are injured on the job. The Department operates through its various agencies, such as the Office of Workers' Compensation Programs (OWCP), which specifically manages the federal workers' compensation system, including the Longshore and Harbor Workers' Compensation Act.

The other organizations listed do have important roles in workplace safety and regulations, but they do not specifically regulate workers' compensation at the federal level in the same way. For instance, OSHA is primarily focused on enforcing workplace safety regulations to prevent occupational hazards. The Workers Compensation Board, while involved in workers' compensation at the state level, does not have federal regulatory power. The Federal Insurance Agency does not directly correlate with workers' compensation, focusing instead on broader insurance regulation.