Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals that includes PFOA, PFOS, GenX, and many other chemicals. PFAS have been manufactured and used in a variety of industries around the globe, including in the United States since the 1940s.

OSHA’s Hazard Communication Standard (29 CFR 1910.1200) addresses the classification and communication of the hazards and potential hazards of chemicals. It requires employers to provide information to their employees about the hazardous chemicals they are exposed to at their workplace as well as the protective measures against these hazards.