OSHA is updating its Hazard Communication Standard to better protect workers by improving the amount and quality of information on labels and safety data sheets (SDS) and allow workers and first responders to react more quickly in an emergency. The revisions take effect July 19. 

The updated standard is aligned with the seventh revision of the United Nations’ Globally Harmonized System of Classification and Labelling of Chemicals (GHS). It will require labels on small packaging to be more comprehensive and readable, as well as measures to ensure trade secrets cannot prevent workers and first responders from receiving critical hazard information on SDS. 

Other notable changes include a clearer hazard classification process to provide more complete and accurate hazard information on labels and SDS; updated physical hazard classes to better inform users on safe handling of explosives, aerosols and chemicals under pressure; and updated precautionary statements on how to safely handle, store and dispose of hazardous chemicals. 

First published in 1983, the standard provides a standardized approach to workplace hazard communications associated with exposure to hazardous chemicals. OSHA last updated the standard in 2012 to align with the third revision of the GHS. 

Visit OSHA's website to learn more about the agency's rules and guidance on hazard communication and visit its YouTube page to view a short video about the revised rule in English or Spanish.