How the HazCom 2024 compliance dates work
The 2024 update to OSHA's Hazard Communication Standard (89 FR 44144 (May 20, 2024)) aligns U.S. chemical labeling and Safety Data Sheets with primarily GHS Revision 7. It does not take effect all at once. Instead, 29 CFR 1910.1200(j) sets four staggered compliance dates — split by who you are (the upstream chemical manufacturer/importer/distributor, or the downstream employer) and what you handle (a single substance or a mixture). You owe exactly one of these dates; this tool isolates it so you stop guessing.
A final rule published January 15, 2026 (FR Doc. 2026-00653) pushed every original date back by four months. The dates below are the in-force, post-extension dates — including the real November 20, 2026 employer-substance date, which some stale sources still list as July 20, 2026.
The four in-force HCS 2024 deadlines
| Role | Product | In-force deadline | Citation |
|---|---|---|---|
| Manufacturer / importer / distributor | substance | May 19, 2026 | 29 CFR 1910.1200(j)(2)(i) |
| Manufacturer / importer / distributor | mixture | November 19, 2027 | 29 CFR 1910.1200(j)(3)(i) |
| Employer (downstream user) | substance | November 20, 2026 | 29 CFR 1910.1200(j)(2)(ii) |
| Employer (downstream user) | mixture | May 19, 2028 | 29 CFR 1910.1200(j)(3)(ii) |
There is no separate distributor date — manufacturers, importers, and distributors share the (j)(2)(i)/(j)(3)(i) dates. Source: 89 FR 44144 (May 20, 2024), as extended by FR Doc. 2026-00653 (Jan 15, 2026), +4 months. Verified 2026-06-23.
What each role must finish by its date
Manufacturers and importers must reclassify products to the primarily GHS Revision 7 criteria and reauthor every Safety Data Sheet. Manufacturers, importers, and distributors must ship containers with compliant labels — corrected pictograms, signal words, and hazard/precautionary statements — and pass updated Safety Data Sheets downstream (29 CFR 1910.1200(f)(1)).
Employers must update workplace (secondary) container labels under 29 CFR 1910.1200(f)(6) — either the full GHS label, or a product identifier plus words/pictures conveying the hazards — refresh the written hazard communication program, and retrain workers on any new pictograms and label changes.
Worked examples
Example 1 — A drywall contractor (employer) buying a single-chemical solvent. Role = employer, product = substance → your date is November 20, 2026 under 29 CFR 1910.1200(j)(2)(ii). By then your secondary-container labels, written program, and training must reflect the 2024 standard.
Example 2 — A coatings blender (manufacturer) shipping paint, which is a mixture. Role = manufacturer, product = mixture → your date is November 19, 2027 under 29 CFR 1910.1200(j)(3)(i). Mixtures get the latest upstream date because reclassifying multi-component products takes longer.
What to do next
- Find your one date with the lookup above, then download the bilingual (EN/ES) action-plan PDF.
- Audit your SDS library and labels against the 2024 criteria — the most common gap is workplace labels that still use pre-2024 pictograms.
- Update the written program and retrain, then document the training with a dated sign-in sheet you can show an inspector.
- Comply early. Until your date, the 2012 HCS, the 2024 HCS, or both are acceptable — there is no penalty for switching ahead of schedule.
Sources & verification
- https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/section-1910.1200
- https://www.federalregister.gov/documents/2026/01/15/2026-00653/hazard-communication-standard
- https://www.osha.gov/hazcom/rulemaking/extension
Dates verified 2026-06-23 against eCFR / Federal Register (regulatory module last verified 2026-10-05). This tool is an informational summary, not legal advice; State-Plan states may set their own effective dates.
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