Hazardous Materials Compliance Checklist

Hazardous materials compliance means meeting three overlapping federal regimes — OSHA’s rules for hazardous chemicals in the workplace, PHMSA’s rules for dangerous goods in transit, and EPA’s rules for hazardous waste — each enforced by a different agency with its own duties. For a business that imports, stores, ships, or disposes of hazmat, a single checklist that tracks all three is the only reliable way to stay compliant. This guide lays out the framework, the core obligations, and a major HazCom update that is phasing in through 2026.

Know Which Agency Governs Each Stage

The most common hazmat mistake is treating it as one rule. In reality, different agencies govern the material at different points in its life.

Build your program so each stage has an owner and a procedure. A drum that is compliant on the loading dock can still create liability if its waste disposal or its shipping papers are wrong.

Workplace Hazard Communication (OSHA)

Inside the facility, OSHA’s Hazard Communication Standard (HazCom) controls. It is aligned with the United Nations’ Globally Harmonized System (GHS) and requires a written hazard communication program, a current inventory of hazardous chemicals, a compliant label on each container (product identifier, signal word, hazard and precautionary statements, and pictograms), a Safety Data Sheet (SDS) available for every hazardous chemical, and employee training on the hazards they work with.

Important update: OSHA published a final rule on May 20, 2024 (effective July 19, 2024) updating HazCom to align with GHS Revision 7. The change phases in: updated labels and safety data sheets for substances were required by January 19, 2026, with further requirements taking effect on staggered dates through January 19, 2028. During the transition, businesses may comply with the updated standard, the prior 2012 standard, or both — but the safest course is to move SDSs and labels to the new version now. Confirm your suppliers are issuing updated SDSs and that your written program reflects the revision.

Hazardous Materials in Transit (PHMSA)

When the material moves, PHMSA’s Hazardous Materials Regulations (49 C.F.R. Parts 100–185) take over. Compliance begins with classifying the material into one of nine hazard classes (explosives, gases, flammable liquids, flammable solids, oxidizers, toxic/infectious substances, radioactive material, corrosives, and miscellaneous dangerous goods). Classification then drives every downstream requirement: authorized packaging, hazard marking and labeling, placarding of the conveyance, accurate shipping papers, and trained hazmat employees. These transport duties are separate from, and additional to, the OSHA workplace rules — our transportation and logistics compliance checklist puts them in the larger freight picture.

Hazardous Waste (EPA)

When a hazardous material becomes waste, EPA’s RCRA framework governs its handling, storage, and disposal — including generator status, manifesting, accumulation limits, and use of permitted disposal facilities. Disposal is one of the most heavily enforced corners of environmental law, so a written waste-management plan with proper characterization and documented disposal through authorized facilities is essential. Mischaracterizing or mishandling waste is a frequent and costly enforcement target.

Importing Hazardous Materials

For imported hazmat, the customs entry sits on top of all of the above, and the substance’s own regulatory regime determines what else applies — for example, industrial chemicals clear under TSCA. Our guide on how to import chemicals covers the TSCA Section 13 certification and the agency-by-chemical-type analysis that determines which rules attach at entry.

The Recurring Disciplines

Three habits hold a hazmat program together regardless of stage: accurate classification (it drives every other requirement), complete documentation and recordkeeping (SDSs, training records, shipping papers, and waste manifests), and ongoing training so employees can recognize hazards and follow procedures. Pair these with periodic internal audits, and the program stays compliant as inventories and regulations change.

Frequently Asked Questions

What agencies regulate hazardous materials?

Primarily three: OSHA governs hazardous chemicals in the workplace (HazCom), PHMSA governs dangerous goods in transit (49 C.F.R.), and EPA governs hazardous waste under RCRA. Imports add a CBP customs layer on top of whichever rule applies.

What changed in OSHA’s 2024 HazCom update?

OSHA aligned the Hazard Communication Standard with GHS Revision 7. The rule took effect July 19, 2024, and phases in — updated substance labels and SDSs were required by January 19, 2026, with additional requirements through January 19, 2028.

What is a Safety Data Sheet?

An SDS is a standardized document, required under OSHA’s HazCom Standard, that conveys a chemical’s hazards, safe-handling measures, and emergency information. Employers must keep a current SDS accessible for every hazardous chemical in the workplace.

How are hazardous materials classified for shipping?

PHMSA’s rules sort dangerous goods into nine hazard classes, from explosives (Class 1) to miscellaneous dangerous goods (Class 9). The class drives the required packaging, marking, labeling, placarding, and shipping papers.

Hazardous materials compliance is really three regimes that must align across a material’s life — workplace, transit, and waste. Reidel Law Firm helps importers and shippers map those obligations on flat-fee terms, with a plain-English compliance memo and direct attorney access. Get an import compliance memo.