Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content

Health Hazard Evaluations (HHEs)

Employees, employee representatives, or employers can ask NIOSH to help learn whether health hazards are present at their place of work. NIOSH may provide assistance and information by phone and in writing, or may visit the workplace to assess exposure and employee health. Based on their findings, NIOSH will recommend ways to reduce hazards and prevent work-related illness. The evaluation is done at no cost to the employees, employee representatives, or employers.

This website shares information about the Health Hazard Evaluation (HHE) Program and allows you to request an evaluation. You can also search thousands of HHE reports or contact us if you have a question.

2014 Health Hazard Evaluation Program Annual Report
If you would like a paper copy please send an email to with your name and mailing address. Adobe PDF file

Watch our newest video NIOSH Health Hazard Evaluations: Sampling for Exposures.
We just released a short video showing how employees help in our evaluations by wearing pumps to measure noise and sample the air for contaminants in their workplace. Web Site Icon

NIOSH Health Hazard Evaluation Program Noise Measurement Database
We have released a database to provide researchers and other interested stakeholders with noise measurement results collected during HHE surveys from 1996–2012. To view the database go to