http://www.dol.gov/compliance/topics/safety-health.htm Three U.S. Department of Labor agencies have responsibility for the administration and enforcement of the laws enacted to protect the safety and health of workers in America.
The Occupational Safety and Health (OSH) Act is administered by DOL’s Occupational Safety and Health Administration (OSHA). Safety and health conditions in most private industries are regulated by OSHA or a state by state OSHA. Nearly every employee in the country falls under OSHA’s jurisdiction except for miners, some transportation workers, many public employees, and self-employed people. Employers subject to the OSHA have a general duty to provide work and a workplace free from recognized, serious safety hazards.