The Occupational Safety and Health Administration (OSHA) proposed rules to modify the Hazard Communication Standard (HCS) to conform to the United Nations’ Globally Harmonized System of Classification and Labelling of Chemicals (GHS) Revision 7, which is more current than the version of the GHS that’s incorporated into the existing HCS.

The HCS, also known as HazCom, is a U.S. regulation that governs the evaluation and communication of hazards associated with chemicals in the workplace.