OSHA is correcting several inadvertent errors in its Hazard Communication Standard (HCS) which were published in the Federal Register on 20 May 2024. The agency has identified several errors in the regulatory text and appendices to the HCS which pertain to the classification of hazardous chemicals and information presented on labels and Safety Data Sheets (SDSs). The agency believes these errors, although minor and primarily typographical in nature, should be addressed expeditiously to avoid confusion or unnecessary costs in the regulated community due to incorporation of errors on labels and SDSs. OSHA is continuing its review of the regulatory text and will issue another correction document to address additional minor errors at a later date. The effective date of this rule is 9 October 2024. POC is Mr. Frank Meilinger, Director, OSHA Office of Communications, U.S. Department of Labor; telephone: (202) 693-1999; email: meilinger.francis2@dol.gov. (Federal Register 9 October 2024 [Rule] Pages 81829-81836)