Health Hazard Evaluation Program

The Health Hazard Evaluation Program (HHE) Program is run by the National Institute for Occupational Safety and Health (NIOSH). An HHE is an evaluation of possible health hazards at a workplace. Employers, employees, or their union representatives can request an HHE from NIOSH if they have concerns about health hazards at work. NIOSH responds to HHE requests in writing, by phone discussions, or by visiting the workplace to evaluate whether a health hazard to employees caused by exposure to hazardous materials or conditions exist.