The Occupational Safety and Health Administration (OSHA) amended its Hazard Communication Standard (HCS) to align with Revision 7 of the United Nations’ Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
This article discusses the changes which revise criteria for hazard classification, provisions for labeling, and concentrations claimed as trade secrets. Compliance with the new provisions is due in stages between January 19, 2026, and January 19, 2028.