U.S. Department of Labor's Occupational Safety and Health Administration (OSHA) has issued an extension of compliance dates for the agency's updated Hazard Communication Standard (HCS).

On January 15, 2026, OSHA extended the compliance dates for its 2024 updates to the Hazard Communication Standard. Manufacturers, importers, and distributors were initially required to evaluate certain substances by January 19, 2026. That deadline has now been extended to May 19, 2026. All other compliance dates are extended by four months as well. In the meantime, chemical manufacturers, importers, distributors, and employers may comply with either the previous version of the standard, the updated standard, or both. OSHA extended the compliance deadlines to give the agency time to publish the necessary guidance materials for the regulated community to review before the revised HCS provisions take effect. For more details, see the Federal Register notice.