A more thorough explanation:

The Occupational Safety and Health Administration (OSHA) is a part of the U.S. Department of Labor. Its main job is to make sure that workplaces are safe and healthy for employees. OSHA sets safety and health standards for different types of jobs and industries, and it also helps employers follow these standards.

For example, OSHA might set a standard for how much noise is allowed in a factory. If the noise level is too high, OSHA might require the factory to provide ear protection for its workers. OSHA also inspects workplaces to make sure that employers are following the standards.

OSHA was created in 1970 by the Occupational Safety and Health Act. It has ten regional offices throughout the United States.