Occupational Health and Safety is the main federal agency charged with ensuring the safety of people in the work place and public safety. All business and public bodies have to comply to health and safety rules.

Yes, Occupational Health and Safety is a sub-discipline of Public Health. In the US, the National Institute of Occupational Safety and Health (NIOSH) is within the Public Health Service.

Most provisions of the US Occupational Safety and Health Act are administered by the Occupational Safety and Health Administration (OSHA). Some provisions are administered by the National Institute for Occupational Safety and Health (NIOSH), and a few are administered by the Occupational Safety and Health Review Commission

The Occupational Safety and Health Act of 1970 created three agencies, the Occupational Safety and Health Administration, the National Institute for Occupational Safety and Health, and the Occupational Safety and Health Review Commission.