With limited staff, the U.S. Occupational Safety and Health Administration (OSHA) relies heavily on its Severe Violator Enforcement Program, a broad workplace safety program which currently has more than 500 businesses are on its list of bad actors. They include corporate giants such as DuPont and International Paper, each with tens of thousands of employees, as well as more than 300 construction firms. The effort faces an uncertain future under the Trump administration.