The Occupational Safety and Health Administration (OSHA) was established in 1971 by the OSH Act with the aim of reducing workplace injury and illness. That act gave OSHA regulatory power over private sector workplaces. Since the passage of the OSH Act, the rate of reported serious workplace injuries and illnesses has declined from 11 per 100 workers in 1972 to 3.6 per 100 workers in 2009. 4,609 workers were killed on the job in 2011. Worker injuries and illnesses are down from 10.9 incidents per 100 workers in 1972 to fewer than 4 per 100 in 2010. Employers are required to provide a workplace free from serious recognized hazards and comply with standards, rules and regulations issued under the OSHA Act.