What does the HazCom standard actually require?
The standard, often called the 'Right to Know' law, has four pillars. Every employer with hazardous chemicals must implement each one in writing.
- A written hazard communication program describing how the employer meets each requirement.
- A complete Safety Data Sheet (SDS) for every hazardous chemical, accessible to employees during every shift.
- Proper container labels — including secondary containers (spray bottles, transfer jugs) — using the GHS pictogram and signal-word format.
- Documented employee training before any worker is assigned to handle a hazardous chemical, and again whenever a new hazard is introduced.
Who has to comply?
Almost every U.S. employer in general industry, construction, maritime, and agriculture is covered. The standard applies regardless of company size — a one-person nail salon and a 500-employee factory have the same baseline obligations. The only meaningful exclusions are consumer products used in consumer quantities and a narrow set of articles regulated by other agencies.
What changed in the 2024 HazCom update?
OSHA finalized a major HazCom update in May 2024 that aligns the U.S. standard with revision 7 of the Globally Harmonized System (GHS). Compliance dates begin in 2026 and finish in 2027 depending on the type of product. The biggest practical changes: new precautionary statements, updated criteria for flammable gases and aerosols, new labeling requirements for small containers, and stricter rules for trade-secret claims on SDSs.
Most small employers don't realize HazCom is OSHA's number-two most-cited standard year after year. The violations aren't usually exotic — they're missing written programs, missing SDSs, and unlabeled spray bottles in the supply closet.
What does an OSHA HazCom inspection look like?
An OSHA inspector typically asks for four things in this order: your written program, your SDS library, a walk through your facility to spot unlabeled containers, and your training records. They will pick a chemical at random, ask an employee what its hazards are, and verify that the SDS matches what's on the shelf.
Most common HazCom violations and how to avoid them
| Violation | Frequency | Common cause |
|---|---|---|
| No written HazCom program | Top citation | Owner assumed SDS binder was enough |
| Inadequate or missing employee training | Top 5 | Onboarding skipped or undocumented |
| Unlabeled secondary containers | Top 5 | Decanted spray bottles with no label |
| Missing or outdated SDS | Top 5 | New product added without SDS request |
| No site-specific written program | Common | Generic template never tailored |
How long does it take to become compliant?
If you start from zero, expect 4 to 8 weeks of internal work — chemical inventory, SDS sourcing, drafting the written program, printing labels, scheduling training, and assembling records. Managed services like HazCom48 collapse the build to roughly 48 hours by handling the SDS sourcing, document generation, and label production for you.