OSHA to extend HazCom compliance deadlines by four months

Chemical manufacturers, importers, distributors, and employers will have an extra four months to comply with the provisions of OSHA’s revised Hazard Communication (HazCom) standard. According to a prepublication version of the Federal Register, as of January 15, the agency will extend its compliance deadlines. This allows OSHA time to finalize related guidance documents for those impacted by the HazCom changes and in turn gives those stakeholders time to review the guidance and come into compliance.

Original compliance date	New compliance date	Requirement(s)	Who
January 19, 2026	May 19, 2026	For substances, comply with all modified provisions of 1910.1200	Chemical manufacturers, importers, and distributors evaluating substances
July 20, 2026	November 20, 2026	For substances, as necessary: • Update any alternative workplace (in-house) labeling, • Update HazCom training program, and • Provide additional employee training for newly identified physical, health, or other hazards covered.	Employers
*Substance is defined at 1910.1200(c): “Substance means chemical elements and their compounds in the natural state or obtained by any production process, including any additive necessary to preserve the stability of the product and any impurities deriving from the process used, but excluding any solvent which may be separated without affecting the stability of the substance or changing its composition.”
July 19, 2027	November 19, 2027	For mixtures, comply with all modified provisions of 1910.1200	Chemical manufacturers, importers, and distributors evaluating mixtures
January 19, 2028	May 19, 2028	For mixtures, as necessary: • Update any alternative workplace (in-house) labeling, • Update the HazCom training program, and • Provide additional employee training for newly identified physical, health, and other hazards covered.	Employers
*Mixture is defined at 1910.1200(c): “Mixture means a combination or a solution composed of two or more substances in which they do not react.”

For more on the HazCom revisions, see our related articles:

OSHA’s HazCom final rule is here! (5/20/2024)

OSHA issues HazCom corrections (10/09/2024)

OSHA issues further HazCom corrections (1/9/2026)

See also, What changes did OSHA make to the HazCom Standard in 2024?