BC first aid assessment review after a workplace change

September 29, 2026·15 min read

The decision at the point of change

A British Columbia employer adds a night shift. The total workforce has not grown, but more people now work while the usual first aid attendant is off site. Another employer takes over part of a remote work area, changing how quickly injured workers can be reached. A contractor opens a new access road, then closes the one the emergency vehicle had been expected to use. Each change raises a practical question: does the written first aid assessment still describe the workplace that exists today?

The answer is not found by reading a kit inventory alone. Section 3.16 of WorkSafeBC's Occupational Health and Safety Regulation requires the employer to assess the workplace in writing for first aid. Section 3.16 also requires a review and update within 12 months after the previous assessment or review and whenever a significant change affecting the assessment occurs in the employer's operations. The annual date is an outer recurring checkpoint. It is not permission to wait until that date after a significant change has made the assessment inaccurate.

This guide is about the review decision after change. It does not try to calculate the exact number of attendants, kits or facilities for an unnamed site. Those depend on the workplace assessment, the applicable Schedule 3-A tables, and any additional services required for prompt first aid and transport. An employer needs to use the current rule and the actual circumstances of its workers.

What the original written assessment must cover

Before deciding whether a change is significant, retrieve the last written assessment. Section 3.16 has two connected duties. The employer must provide at least the first aid equipment, supplies, facilities, attendants and services required by Schedule 3-A. It must also provide any additional services necessary so that injured workers can promptly receive first aid and be transported to medical treatment. Meeting a table minimum alone may not answer the second duty where access, distance or risk presents a special problem.

The written assessment under section 3.16 considers the number of workers present, where those workers are located, the nature and extent of workplace risks and hazards, and the time and methods needed to obtain transport to medical treatment. WorkSafeBC's first aid assessment guidance explains how to apply the minimum tables and evaluate additional workplace circumstances. The guidance is useful for method and examples. The regulation remains the legal source of the duty.

An assessment should describe a real shift and a real place. If it says that 18 workers are normally present at one accessible facility, it cannot automatically be reused for a different operation with workers dispersed across a remote site. If it assumes reliable road transport, check that assumption when access changes. If it names an attendant who no longer works the relevant shift, the named arrangement needs attention even if the size of the first aid kit has not changed.

Begin with a simple evidence check. Identify the date of the last assessment or review, the person responsible for the next review, the workforce and locations it covered, the hazard rating and workplace class used in applying Schedule 3-A, and the arrangements for prompt first aid and transport. An unsigned template that does not describe the work is a weak starting point. The regulation calls for a written assessment of the workplace, not merely possession of a generic form.

Two separate review triggers

There are two statutory timing paths. First, the employer must review and update the assessment within 12 months after its previous assessment or review. Record that previous date so the next due date is not guessed from the calendar year or the date a kit was purchased. Second, it must review and update whenever a significant change affecting the assessment occurs in its operations. The second path is event driven. A significant change today is not postponed because the scheduled annual review is months away.

The word significant matters. Not every minor administrative edit has the same effect on first aid provision. The practical test is whether the change affects an input to the written assessment or the ability to give prompt first aid and transport. A changed worker maximum, shift pattern, task hazard, work location, access route or transport method can change the answer. Record both the changed fact and the conclusion. That makes the review explainable without pretending that every change automatically produces a new Schedule 3-A tier.

WorkSafeBC Guideline G3.16 subsection 3 gives examples of significant changes. They include changes in the maximum number of workers present, a changed workplace class due to accessibility or remoteness, new equipment or processes that alter risks, a changed hazard rating for the employer's classification unit, and changes in barriers or routes that affect first aid response or transport. These are regulator examples to help apply section 3.16. They should not be quoted as an exhaustive statutory list.

If the effect is unclear, do the assessment review instead of arguing over the label. Compare the old assumptions with today's operation, consult the people identified by the regulation, and document whether any equipment, attendant, procedure or transport arrangement needs to change. This is a process recommendation. It is not a claim that the law imposes a fixed number of days for every possible change.

A change in worker count or shift pattern

The number of workers present is central to the Schedule 3-A calculation. WorkSafeBC's guidance explains that the employer should consider the maximum number present during a typical shift and that people who work in the workplace, including supervisors and administrative staff, may matter to that count. A larger crew can move an operation into a different minimum table row. A smaller crew may change the calculation too, but it does not automatically eliminate the need for additional services if the workplace is remote or hazardous.

Count the people who will actually be there at the same time. Do not use payroll headcount where shifts never overlap, and do not use an average that hides a peak. Identify the shift where the maximum occurs. If a new night shift adds workers but the total across all shifts is unchanged, the assessment may still need revision because the availability of attendants, communications or transport has changed. Make the first aid arrangements work for the hours when people are at work, not only for the day shift when managers are present.

For variable crews, record the assumed working range and the condition that triggers another review. A construction or seasonal site may have a predictable peak that deserves a different arrangement from its quieter weeks. A temporary staffing change should be tested against actual provision. Do not state that one extra worker always causes a new statutory kit count; check the relevant table row and all other assessment factors.

A change in location, accessibility or transport

Workplace class and transport planning can matter as much as worker number. A crew may move from a location with ready road access to an isolated area. A gate may be locked after hours. Snow, flooding or roadworks may interrupt the route assumed in the assessment. A new job site may be closer on a map but much harder for an ambulance to reach. Such changes can affect prompt treatment even if the tasks and headcount remain the same.

Use a scenario rather than an address alone. Start with an injured worker at the most difficult normal work location. How will that worker call for help? How will the attendant reach them? How will the worker be moved without introducing more harm? Which transport method is available when the shift is running? How long might it take to reach medical treatment under the conditions the employer can reasonably foresee? Section 3.16 requires the written assessment to address the relevant transport time and methods. WorkSafeBC guidance discusses additional services where minimum provision is insufficient for prompt first aid or transport.

A changed access road is a good example. The rule does not name road closures as an automatic legal category. The regulator's guidance identifies barriers or routes affecting response and transport as a significant-change example. If the old plan depended on a route that is now unavailable, record the replacement route and check whether staffing, equipment, communications or emergency transportation must change. Make sure the actual workers and contractors know the current route. A new drawing in an office file does not by itself make the field response work.

A change in hazards or work method

New machinery, materials, processes or tasks can alter the type and seriousness of likely injury. The WorkSafeBC guideline gives these as examples of changes that can affect a first aid assessment. A warehouse introducing a new lifting operation, a maintenance team starting energized testing, or a crew beginning work at a more distant location should compare the new risk with the hazards assumed in the assessment.

Do not mistake the first aid review for a substitute for risk control. The employer still needs to identify and control the hazards of the work. The first aid assessment asks whether the services in place would be suitable if someone is injured despite those controls. It may reveal a need for different attendant availability, supplies, facilities, communications or transport. It cannot make an unsafe work method acceptable simply by increasing first aid capacity.

Hazard rating is a particular assessment input. WorkSafeBC says a change to the hazard rating assigned to an employer's classification unit can trigger review. The employer should verify the current rating from the regulator rather than copying an old spreadsheet or assuming a broad industry label. The exact Schedule 3-A outcome must be calculated using the current classification, workplace class and worker number. This guide does not guess that outcome for the reader.

Consult the people the regulation identifies

Section 3.16 subsection 3.1 requires the written assessment to be prepared, reviewed and updated in consultation with the joint committee or worker health and safety representative, as applicable. The phrase as applicable matters. Do not invent a committee where the workplace does not have one, and do not treat a management-only sign-off as consultation where the rule calls for it.

Give the committee or representative enough information to contribute. Show the changed worker distribution, new tasks, access barrier, proposed attendant arrangements and transport assumptions. Ask whether workers have encountered a delay or obstacle in summoning help. A worker who travels to a remote part of the site may know that the radio fails there. A new shift may reveal that the first aid room is locked after hours. These observations do not replace the assessment, but they make it more accurate.

Record the consultation date, who participated, what concerns were raised and how the employer dealt with them. WorkSafeBC's guideline recommends recording who was involved in the review. A meeting minute can support the assessment if it clearly points to the changed document and decision. Avoid a bare statement that workers were consulted when the file contains no trace of what was discussed.

Shared sites and the prime contractor

Multiple employers complicate first aid planning. Section 3.20 of the BC regulation says that when workers of two or more employers work at a workplace at the same time, the prime contractor must assess the workplace circumstances under section 3.16 subsection 2 in relation to all workers there. It must also do everything reasonably practicable to establish and maintain the first aid services required under section 3.16. That does not mean each subcontractor can ignore its own workers or assume a paper allocation will deliver prompt care. Define how the shared arrangement actually operates.

A contractor arriving with another crew can change the total worker count or introduce different tasks and risks. The prime contractor should check the shared assessment against the combined workforce, locations and response arrangements. Employers should know who provides each attendant, how that person can be reached, and what happens when a crew leaves early. If one employer's attendant is relied on for the whole site, make sure the arrangement covers the times and locations in the assessment. Do not silently rely on someone who is scheduled elsewhere.

At handover, pass the current assessment, not just a checklist saying that first aid exists. The receiving team needs to know the assumptions and whether they remain true. A change in prime contractor or site layout can justify an immediate review, even if the annual due date is far away. Record who owns the revised shared assessment and the effective date. If the parties disagree about coverage, resolve the gap before workers are exposed to a plan that has no responsible operator.

Turn the review into an operational decision

A useful review should leave four clear answers. First, which facts changed? Second, which assessment factors are affected? Third, what first aid services or procedures must change? Fourth, who will verify the change at the workplace and when? Keep the old version so the reason for the revision is traceable, but identify one current version that workers can use. A supervisor should not have to decide between several conflicting files in an emergency.

Check the minimum Schedule 3-A provision again using the current worker number, hazard rating and workplace class. Then consider whether section 3.16 subsection 1b calls for additional provision so workers can promptly receive first aid and get to medical treatment. These are connected but distinct checks. A minimum table answer does not close an unusual access or transport issue. If the assessment produces a changed requirement, verify that the attendant, kit, facility or transport is available in fact, not just named in a spreadsheet.

The review may also require an update to the employer's written first aid procedures. Section 3.17 governs first aid procedures. A new attendant location or response route should be reflected in the instructions workers use to summon help. A written assessment and procedures that disagree create an avoidable delay. Brief the affected shifts and contractors on the changes.

Record a review even where the employer concludes that the existing services remain adequate. The record should state what changed, which factors were tested, who was consulted where required, and why no change in provision was needed. That is more credible than an undated checkbox marked reviewed. WorkSafeBC's guideline advises employers to record the review date and participants, with a new assessment document where changes are needed. The regulator guidance helps show the review process; it does not establish a separate universal format for all employers.

Five practical mistakes to avoid

Waiting for the annual anniversary. The significant-change trigger is separate from the 12-month review. If the assessment no longer matches the workplace, waiting may leave people without the intended response arrangement.

Checking only the kit. First aid provision includes attendants, facilities, services, communication and transport. The employer's written assessment covers more than supplies. A stocked box does not make a remote worker reachable.

Using the average worker count. Determine who is present on the relevant shifts and check the current Schedule 3-A row. An average can conceal a higher peak or a shift without an available attendant.

Treating guideline examples as an exhaustive legal test. WorkSafeBC's list helps identify significant changes, but the regulation asks whether a significant change affects the assessment. A different change can still matter.

Leaving a shared site assumption untested. If two employers use one arrangement, section 3.20 assigns a specific assessment and first aid role to the prime contractor. Confirm the real combined workforce and response coverage after a new crew or contractor arrives.

A review record that a successor can understand

Use a concise change log alongside the written assessment. Record the workplace and shift, previous review date, new review date, changed facts, sources used for the Schedule 3-A inputs, committee or representative consultation where applicable, decision on minimum and additional services, changes to procedures, implementation owner and date the changes were checked on site. Attach evidence of a revised attendant roster, route map or transport arrangement where that evidence explains the decision. This is a suggested management record, not a new prescribed statutory form.

Make the record retrievable by the person who will manage the next change. A first aid arrangement is vulnerable when it depends on one manager remembering an informal decision. Handover should tell the next supervisor what the assessment assumes, where it applies, who is responsible, and which changes would require another review. This matters particularly at a rotating construction site, a mobile operation or an employer with several shifts.

Set a calendar reminder for the next 12-month review, while keeping the event-trigger check in the change process. When planning a new shift, changing the work method, moving the crew or appointing a new contractor, ask whether the first aid assessment is affected before the change takes effect. A calendar can remind a business of a known date. It cannot notice every operational change unless people are assigned to raise those changes.

What to do now

Retrieve the current written assessment and compare it with the actual workforce, hazards, locations and transport routes. If the previous review is nearly 12 months old, schedule the required update. If a significant operational change has already affected the assessment, review and update it now. Consult the joint committee or worker representative where the regulation applies. Recalculate the applicable minimum and evaluate any additional services needed for prompt care and transport. Then verify that the revised plan works on every affected shift.

The Canadian health and safety program guide provides the broader program context. For an implementation discussion, contact Complys Canada and ask to see how its current product could support your own first aid review records. Require a demonstration of any feature before relying on it. The employer remains responsible for its assessment and the first aid services the BC rule requires.