# OSHA Requires Hazard Communication Updates

OSHA’s 2024 revision to the Hazard Communication Standard requires employers that use hazardous chemicals to update workplace labels, written HazCom programs, and employee training for substances with newly identified hazards by November 20, 2026—43 days from October 8, 2026. Employers must make corresponding updates for mixtures by May 19, 2028. Government contractors with affected workplaces should verify supplier Safety Data Sheets and document their updates and training; applicable OSHA-approved State Plan requirements should also be checked.

- Contractors using affected hazardous chemicals must complete the substance-related updates by **November 20, 2026**; mixture updates are due May 19, 2028.
- Procurement and operations teams can use supplier Safety Data Sheets to identify newly classified hazards and coordinate label, program, and training updates across affected worksites.
- The signal reports potential penalties of up to $16,550 per serious violation and $165,514 per willful or repeated citation, making documented workplace updates relevant to contractor risk management.

**Jurisdictions:** federal
**Topics:** Regulatory Compliance
**Published:** October 07, 2026

### Government Entities
- Occupational Safety and Health Administration (OSHA)

### Sources
- [OSHA’s Revised Hazard Communication Standard: The November 20, 2026, Employer Deadline Is Approaching | Shipman & Goodwin LLP - JDSupra](https://www.jdsupra.com/legalnews/osha-s-revised-hazard-communication-9859145) - JDSupra