Hazard Communication Standard (HCS)
OSHA's rule requiring chemical manufacturers and importers to classify the hazards of what they produce or import, and every employer to give employees hazard information through a written programme, labels, safety data sheets and training. The 2024 final rule (89 FR 44144, 20 May 2024, effective 19 July 2024) aligned it with GHS Revision 7; a January 2026 rule extended each compliance date by four months.
Always verify against the current published text before relying on it for a submission or inspection.
Scope & applicability
All employers whose employees may be exposed to hazardous chemicals, including drugs and pharmaceuticals outside the exemption for drugs in solid, final form for direct administration to the patient (tablets, pills). It is the federal worker-protection rule OSHA points to for hazardous drugs, alongside 1910.1020 (exposure records) and 1910.1450 (laboratories).
Key requirements
- Hazard classification by chemical manufacturers and importers against the criteria in Appendices A and B
- Labels with harmonised signal word, pictogram and hazard statement, and a 16-section safety data sheet
- A written hazard communication programme, workplace labelling, and employee information and training
- Compliance dates (as extended in 2026): substances 19 May 2026 (classifiers) and 20 November 2026 (employers); mixtures 19 November 2027 and 19 May 2028
Implementation tips
- Hazardous-drug handling in a pharmacy or plant has two owners: USP <800> for the product and process, HCS for the employee — a programme that cites one without the other is half-built
Revision notes
Final rule of 20 May 2024 (effective 19 July 2024) aligned the HCS with GHS Rev. 7; corrections followed on 9 October 2024 and 8 January 2026 (with a further correction on 13 February 2026), and a final rule effective 15 January 2026 moved every compliance date back four months.
Where this control fails
live FDA enforcementLive FDA recalls SPEQ maps to this standard’s topics — a SPEQ interpretation, not an FDA classification.
29 CFR 1910.1200: frequently asked questions
Quick answers to common questions about 29 CFR 1910.1200.
What is 29 CFR 1910.1200?
29 CFR 1910.1200 — Hazard Communication Standard (HCS) — is a regulation issued by the Occupational Safety and Health Administration (United States). OSHA's rule requiring chemical manufacturers and importers to classify the hazards of what they produce or import, and every employer to give employees hazard information through a written programme, labels, safety data sheets and training. The 2024 final rule (89 FR 44144, 20 May 2024, effective 19 July 2024) aligned it with GHS Revision 7; a January 2026 rule extended each compliance date by four months.
Who does 29 CFR 1910.1200 apply to?
All employers whose employees may be exposed to hazardous chemicals, including drugs and pharmaceuticals outside the exemption for drugs in solid, final form for direct administration to the patient (tablets, pills). It is the federal worker-protection rule OSHA points to for hazardous drugs, alongside 1910.1020 (exposure records) and 1910.1450 (laboratories).
What are the key requirements of 29 CFR 1910.1200?
OSHA 29 CFR 1910.1200 requires, among other things: Hazard classification by chemical manufacturers and importers against the criteria in Appendices A and B; Labels with harmonised signal word, pictogram and hazard statement, and a 16-section safety data sheet; A written hazard communication programme, workplace labelling, and employee information and training; Compliance dates (as extended in 2026): substances 19 May 2026 (classifiers) and 20 November 2026 (employers); mixtures 19 November 2027 and 19 May 2028.
When was 29 CFR 1910.1200 last updated?
The current version of 29 CFR 1910.1200 dates from January 2026. Final rule of 20 May 2024 (effective 19 July 2024) aligned the HCS with GHS Rev. 7; corrections followed on 9 October 2024 and 8 January 2026 (with a further correction on 13 February 2026), and a final rule effective 15 January 2026 moved every compliance date back four months.
This standard in practice
Recall domain is a SPEQ mapping of this standard’s topics, not an FDA classification.