Final answer:
The U.S. federal agency that regulates worker safety and, in some cases, responder safety is the Occupational Safety and Health Administration (OSHA).
Step-by-step explanation:
The U.S. federal agency that regulates worker safety and, in some cases, responder safety is the Occupational Safety and Health Administration (OSHA). OSHA is part of the U.S. Department of Labor and was established under the Occupational Safety and Health Act in 1970. Its mission is to assure safe and healthful working conditions for workers by setting and enforcing standards, providing training, outreach, education, and assistance.