Worker operating machinery on roof

Health Hazard Evaluations

NIOSH conducts investigations of possible health hazards in the workplace. These investigations, called Health Hazard Evaluations (HHEs), are conducted under the authority of the Occupational Safety and Health Act of 1970 and the authority of the Mine Safety and Health Act of 1977, which authorize the Secretary of Health and Human Services, following a written request from employees, authorized representative of employees, or employers, to determine whether any substance normally found in the place of employment has potentially toxic effects in such concentrations as used or found.

Some recent HHE reports related to indoor environmental quality have been listed below, but for a comprehensive listing, please search the HHE Database .

Year Published and Title

Page last reviewed: December 11, 2017