OSHA coverage extends to most, but not all, private sector employers and their workers. OSHA rules cover numerous industry workplaces from construction to maritime to agriculture. The agency also covers some public sector employers and their workers, usually through state OSHA agencies that regulate public sector employers. However, OSHA does not cover self-employed workers or immediate members of farm families who do not employ nonfamily workers. OSHA extends throughout all 50 states as well as U.S. territories and jurisdictions, including the District of Columbia, Puerto Rico, the U.S.