Hazard Communication Is Changing: Are Your Contractors Prepared for Updated Requirements?

A maintenance contractor is scheduled to begin work Monday morning. The crew has been onsite before. Their company has already gone through the qualification process, and the project itself is routine.

There is just one problem: something at the facility has changed.

Updated chemical hazard information has resulted in a change to the site’s hazard communication materials.

The contractor’s employees completed an orientation previously, but now the safety team has to answer a more difficult question: Who needs updated information before work starts, and can we document that they received it?

Situations like this reveal something important about contractor safety. The challenge is often not creating another requirement. It is making sure changes move through the organization and reach the people affected by them in a consistent way.

That is particularly relevant as employers work through OSHA’s updated Hazard Communication Standard.

HazCom Changes Put the Process to the Test

OSHA updated the Hazard Communication Standard (HCS) in 2024 to improve the information provided on chemical labels and Safety Data Sheets (SDSs), among other changes. OSHA subsequently extended the compliance dates.

Manufacturers, importers, and distributors evaluating substances were required to comply with the modified provisions by May 19, 2026. For employers, November 20, 2026 is another important date: workplace labeling, hazard communication programs, and additional employee training for newly identified hazards related to substances must be updated as necessary. Mixture-related deadlines extend into 2027 and 2028.

For employers, the practical issue is not simply putting a date on the compliance calendar. It is understanding what has changed, determining who is affected, and making sure the appropriate information reaches those people.

Contractors add another layer to that process.

OSHA’s Hazard Communication Standard specifically addresses multi-employer workplaces. Where employees of other employers may be exposed to hazardous chemicals, the written hazard communication program must address how those employers will receive access to applicable SDSs, information about necessary precautionary measures, and information about the workplace labeling system.

That is where a regulatory change becomes an operational question.

The Weak Point Is Often Between Departments

Over the years, one pattern becomes familiar in contractor management: important information often exists, but not necessarily in one place or under one process.

Procurement may have the contractor’s business information. Risk may be concerned with certificates of insurance (COIs). EHS may manage safety requirements and orientation. Operations knows when the contractor is expected onsite.

None of those functions is necessarily doing anything wrong. The weakness appears when information has to move between them.

Consider what happens when a site requirement changes. Someone has to determine which contractors are affected. Someone has to update the relevant information. Contractor employees may need new or revised orientation. Completion has to be documented. Operations needs to know whether the crew is ready to begin work.

When those steps depend heavily on spreadsheets, email chains, local folders, and individual memory, a relatively simple change can create considerable follow-up.

That is not necessarily a training problem. It is often an information-flow problem.

And it raises a few questions worth asking:

- If a safety requirement changed this week, could you quickly identify which contractor employees were affected?

- Could you determine who had received the updated information without checking several systems or asking multiple people?

- Would the process work the same way at another facility in your organization?

The answers can tell you a great deal about the maturity of the underlying process.

Contractor Readiness Begins Before Mobilization

There is a tendency to think of contractor readiness as something confirmed at the gate. In practice, the strongest processes begin much earlier.

Prequalification establishes what the organization needs to know about a contractor before work begins. Site-specific orientation addresses what contractor employees need to know about the facility. Documentation provides evidence that required steps were completed.

These functions solve different problems, but they work best when they are connected by a consistent process.

This is also where proportionality matters.

A consistent contractor management program does not necessarily mean every contractor receives identical requirements. The nature of the work, potential exposures, and client-defined requirements can differ.

Consistency means the organization has a repeatable method for deciding what is required and documenting what happened.

The principle is simple: requirements should follow the work and its exposure, while the process for applying those requirements should remain disciplined.

That distinction becomes increasingly important as organizations grow. A process that works when one safety manager knows every contractor personally may not work when several facilities, departments, and contractor populations are involved.

Orientation Is More Than a Scheduling Step

Site-specific safety orientation is sometimes treated as another item to clear before mobilization. That misses its operational purpose.

Orientation is one of the points where company requirements meet the people actually performing the work.

If relevant site information changes, the organization needs a practical way to update its orientation requirements, determine who needs them, and document completion. That does not mean the orientation itself determines OSHA compliance. Employers remain responsible for determining their regulatory obligations and the content their workers and affected contractors need.

The administrative process around orientation, however, can either support that responsibility or make it harder to manage.

FIRST, VERIFY supports this process by hosting client-provided site-specific safety orientation content that contractors can complete before arriving onsite. The service can include quizzes or policy acknowledgments, completion certificates, reporting by contractor, employee, course, and date, and renewal reminders. The organization determines its requirements and content; the platform provides a structured way to deliver the orientation and maintain completion records.

That distinction is important. Technology should support the process. It should not be mistaken for the judgment behind the process.

What the HazCom Update Can Teach Us

The current Hazard Communication changes provide a useful reason to review contractor processes, but the broader lesson applies well beyond HazCom.

Requirements change. Contractor employees change. Projects change. Facilities change.

Organizations cannot eliminate that complexity. What they can do is reduce unnecessary uncertainty around it.

For EHS, Risk, Procurement, and Operations leaders, a useful review starts with a few practical questions: Are contractor requirements clearly established before work begins? When requirements change, is there a defined way to communicate those changes? Can required orientation be completed before arrival? Can the organization document completion without reconstructing the process from emails and spreadsheets?

OSHA’s updated Hazard Communication Standard makes those questions timely. But they are worth asking even after the current compliance dates have passed.

A good contractor management process should not depend on everyone remembering what changed, who was told, and where the record was saved.

It should make those answers easier to establish.

And perhaps that is the most useful question to take away from the current HazCom changes: When the next requirement changes and eventually one will how much of your contractor process will depend on the system, and how much will depend on someone remembering what to do?