Which organization is responsible for enforcing health and safety regulations in the workplace?

The Occupational Safety and Health Administration (OSHA) is responsible for enforcing health and safety regulations in the workplace. This U.S. Department of Labor agency aims to ensure safe and healthful working conditions by setting and enforcing standards, providing training and education, and ensuring compliance through inspections and penalties when necessary. OSHA regulates various aspects of workplace safety, including exposure to hazardous materials, ergonomic standards, and proper safety equipment usage, helping to protect workers from potential health risks and injuries on the job.

Other organizations mentioned in the question have different focuses: the Environmental Protection Agency (EPA) deals primarily with environmental protection and regulation concerning air and water quality, among other environmental issues. The World Health Organization (WHO) is a global agency focusing on public health and combating diseases worldwide but does not enforce workplace safety regulations. The National Institutes of Health (NIH) is primarily involved in medical research and advancing knowledge in health sciences, rather than directly regulating workplace safety. Therefore, OSHA is the only organization among the options that directly enforces health and safety regulations in the workplace.