Updated Jun 5, 2026 Reviewed by Opora Editorial Team Editorial standards →

HazCom 2024

On May 20, 2024, OSHA published a final rule in the Federal Register updating the Hazard Communication Standard — 29 CFR 1910.1200 — to align with GHS Revision 7. This update, commonly called HazCom 2024, does not replace the 16-section SDS framework established in 2012; it adds new hazard categories, revises label elements, and updates classification criteria that directly affect cleaning product SDSs and the BSC training programs built around them. Three compliance deadlines govern the rollout: chemical manufacturers and importers must comply by January 19, 2026; distributors by July 19, 2026; employers including BSCs must update written HazCom programs, employee training, and SDS files by January 19, 2027.

Why it matters for building service contractors

HazCom 2024 creates three concrete obligations for BSC employers, each with a different implementation timeline and operational impact:

  1. Updated employee training (due January 19, 2027): Workers trained under the 2012 GHS Rev. 3 alignment must receive refresher training covering the new hazard classes. New categories in GHS Rev. 7 that directly affect cleaning products include aerosol flammability Category 3 (applies to aerosol disinfectant sprays, aerosol degreasers) and revised skin/eye sensitization subcategories (relevant to fragranced products and some disinfectant formulas). OSHA 29 CFR 1910.1200(h)(1) requires training before initial exposure — any employee handling a newly classified product after the deadline without updated training is a violation.
  2. Written HazCom program revision (due January 19, 2027): The written program must reference GHS Rev. 7 classification criteria and the new hazard classes. An unrevised program still citing GHS Rev. 3 language will be cited as deficient in any post-deadline OSHA inspection.
  3. SDS library update (rolling, supplier-dependent): As manufacturers update SDSs to reflect GHS Rev. 7 classifications by January 19, 2026, BSCs will receive updated documents through distributor portals or direct manufacturer communications. A systematic process for capturing and filing updated SDSs as they arrive — rather than waiting until the 2027 deadline — prevents the compliance gap created when a worker handles a product under an outdated SDS that no longer reflects the current hazard classification.

OSHA serious-violation penalties reach $15,625 per instance (2024 schedule). A BSC with 30 accounts where post-January 2027 OSHA inspectors find unchanged HazCom programs — no updated training, no SDS updates — faces aggregate exposure in the hundreds of thousands per citation series.

How it's used in commercial cleaning

The practical HazCom 2024 compliance workflow for BSC operations runs on three parallel tracks:

  1. Chemical program audit: Compile the complete product list for all active accounts. For each product, identify the current SDS date. Products where the SDS predates January 2026 should be flagged for follow-up with the distributor or manufacturer to confirm when the GHS Rev. 7-compliant SDS will be issued.
  2. Training curriculum update: Revise your HazCom training module to include GHS Rev. 7 hazard class descriptions, updated pictogram interpretations where classifications changed, and the new aerosol flammability category. Run refresher training for all field employees before January 19, 2027. Document: employee name, date, trainer, curriculum version, and employee signature.
  3. Written program version control: Date-stamp and version your written HazCom program when you revise it for GHS Rev. 7. Keep the prior GHS Rev. 3 version archived — OSHA inspectors may review historical compliance for incidents that occurred before the update.

Common variations and related concepts

HazCom 2024 is an amendment to HazCom 2012 — not a replacement. The 2012 rule introduced the 16-section SDS format, GHS pictograms, signal words, and standardized label elements that are now familiar across the industry. HazCom 2024 adds new hazard categories within that framework without restructuring the SDS section format or the fundamental label element system. Distributors that provided correct GHS Rev. 3-compliant SDSs under HazCom 2012 are the same parties responsible for providing GHS Rev. 7-compliant SDSs under HazCom 2024 — the chain of responsibility for SDS accuracy runs manufacturer → distributor → employer BSC.

Pitfalls and best practices

Start in 2025, not 2026. The January 2027 employer deadline is 30 months from the rule's publication date — a comfortable runway that tempts operators to deprioritize. But BSCs operating in states with OSHA State Plans (California, Washington, Michigan, and 19 others) should note that state plans may adopt stricter or earlier timelines than federal OSHA. California's Cal/OSHA has historically adopted federal HazCom amendments with modifications; verify Cal/OSHA's specific compliance schedule if you operate in California.

Aerosol reclassification under the new flammability categories may change storage requirements for aerosol disinfectants and degreasers. NFPA 30B (Aerosol Products Code) governs storage quantity and separation requirements for aerosol flammability categories. A product reclassified from "non-flammable" to "flammable Category 3" under GHS Rev. 7 may require changes to how it is stored in your supply rooms and account closets — consult NFPA 30B requirements when reclassifications occur.

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Last updated: 2026

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