Which organization is responsible for setting and enforcing workplace safety regulations in the United States?

The Occupational Safety and Health Administration (OSHA) is the principal federal agency charged with ensuring safe and healthy working conditions for workers in the United States. Established in 1970 under the Occupational Safety and Health Act, OSHA sets enforceable standards and provides guidelines for employers to follow in order to maintain safety in the workplace. This agency plays a critical role in preventing workplace injuries, illnesses, and fatalities by enforcing regulations, conducting inspections, and providing training and education.

The other organizations mentioned have important roles but do not have the same responsibilities as OSHA. The Environmental Protection Agency (EPA) primarily focuses on environmental protection and regulation regarding pollution and hazardous substances rather than workplace safety. The National Institute for Occupational Safety and Health (NIOSH) conducts research and makes recommendations for the prevention of work-related injuries and illnesses but is not responsible for setting or enforcing regulations. The Workplace Safety Agency does not exist as a recognized federal agency in the U.S. Therefore, recognizing OSHA’s specific mandate makes it evident that it is the correct choice for this question.