
Most of what contractors believe about health and safety committees in Alberta was true in 2019 and is not true now. The rules were rewritten, several of the most quoted sections were repealed outright, and a good share of the safety blogs and training brochures still in circulation describe a regime that no longer exists.
The question itself is simple. It just has two different answers depending on whether you are counting your own payroll or counting the people standing on your site. Here is how it actually reads.
The short answer: two thresholds, counted by employer
Alberta ties the requirement to the number of workers an employer regularly employs — not to the size of the project, not to the contract value, and not to how long the job lasts.
| Workers regularly employed | What is required |
|---|---|
| 20 or more | A joint health and safety committee (HSC) |
| Five to 19 | A health and safety representative (HS representative) |
| Fewer than five | Neither, unless an OHS director requires one |
Two things follow from that wording. First, an employer with a committee obligation carries it everywhere, not only on the big jobs — a crew of four on a garage pad still belongs to an employer who may be well over the threshold. Second, an Alberta OHS director can require a committee or a representative at any work site regardless of headcount, which is how a site with a poor history ends up with one.
An employer with five to 19 workers who would rather run a full committee is allowed to. The Act permits a committee in place of a representative, provided it meets the committee rules.
One more consequence worth naming: the same count of 20 or more regularly employed workers also triggers the duty to establish and implement a formal health and safety program. Crews often discover both obligations in the same week.
“Regularly employed” is the phrase that decides it
The count is of regularly employed workers, and Alberta’s regulation excludes unwaged workers — volunteers — from that count. A volunteer does not push you over the threshold, but a volunteer is still a worker with the same rights and protections, and can serve as a committee member or as the representative.
What the count does not do is sweep in everyone on site. A concrete employer counts its own workers. The pump operator, the testing technician and the rebar crew belong to their own employers, each doing the same arithmetic on their own payroll.
Before you put a required committee or representative in place, you also have to consult any union holding bargaining rights for your workers. That consultation is a precondition, not a courtesy.
Multi-employer sites, and why a prime contractor changes the answer
This is the part that matters most on a Calgary building site, and the part the legal commentary tends to skip.
Where the workers of more than one employer are regularly employed at the same work site, the employers may have to work together: 20 or more in total means the employers coordinate a work site committee, and five to 19 in total means they coordinate a single work site representative. Workers from any of the employers on site can fill those seats.
That coordination duty falls away where a prime contractor has been designated for the work site. In its place, the prime contractor has to put a system in place to ensure compliance with the legislation and cooperation between employers and workers on health and safety, and has to designate a person responsible for making that system work. No site-level committee is required.
The piece people miss: the carve-out is about the site. Every employer’s own obligation survives it. Our crews work on sites with a prime contractor almost every week, and we still bring our own structure with us — workers on a prime contractor site keep access to their employer’s committee or representative.
What has to exist in writing
A committee is not a standing meeting invitation. The Code asks for specific artefacts, and these are what an officer looks for first.
- Two co-chairs. One chosen by the employer members, one chosen by the worker members.
- Written terms of reference. Eight items: how co-chairs are selected; how worker members are selected so they genuinely represent the workers; the term of office; meeting frequency and how records are kept; how meetings are run and how concerns get to the employer; how a member is replaced mid-term; a dispute resolution process for when the committee cannot agree on a recommendation; and how the committee handles members who are not doing the job.
- A membership record, posted. Names and contact information kept on file, and contact information posted conspicuously at every work site the committee covers — or shared another way if the committee agrees to it.
- Minutes of special meetings, kept and available. A committee must convene a special meeting if an OHS officer asks for one, and section 198(2) sets how long those minutes must stay available for inspection by a member or an officer. It is longer than most crews assume.
Worker members are selected by the workers they represent: unions select the members for unionized workers, non-unionized workers select their own. The employer sets a reasonable deadline for names, and if none arrive, the employer selects those members itself. Employer members cannot outnumber worker members. The representative, where that is what you have, must work for the employer and cannot be a manager, a supervisor or a contracted service provider.
How the committee is meant to run
Four core duties sit in the Act, and they are narrower and more practical than the phrase “safety committee” suggests:
- Receiving, considering and disposing of worker health and safety concerns.
- Participating in the employer’s hazard assessment.
- Making recommendations to the employer.
- Reviewing the employer’s work site inspection documentation.
That fourth duty is the one that quietly raises standards. Somebody who does not report to the superintendent reads the inspection paperwork — and inspection paperwork on a concrete job is specific, like the pre-backfill checks that happen before a wall is buried. Documentation written to be read by a committee tends to get written honestly.
Quorum is at least half the members, with both worker and employer members present, and at least half of those present being worker members. Meetings and duties happen during normal working hours, and a worker is deemed to be at work — and paid — while doing committee or representative work, including the training.
A committee advises. It does not own the fix. The parties with control of the site — the employer, the prime contractor — remain responsible for implementing solutions.
Training: what the Code asks now
The Code requires that committee members and representatives be trained on three things: the roles and responsibilities of co-chairs, members and representatives; the obligations of the work site parties; and the rights of workers. The employer may deliver that training in-house or buy it from an outside provider.
That is a different world from the rules a lot of material still describes: a one-time mandatory course delivered only by government-approved agencies, plus an annual training entitlement measured in hours. Those prescriptive sections were repealed. If a brochure quotes an approved-agency requirement at you, check its date — Alberta’s own bulletin on that regime is archived, while the current guidance, updated in July 2025, says plainly that employers can develop and provide the training themselves.
Where this page stops
This page is about who needs a committee or a representative and what that body must do. It is not about the legal role of the prime contractor, which is a separate set of obligations; it is not about reporting a serious injury or incident, which runs on its own clock to a different authority; and it is not about first aid coverage, which is sized by its own rules. Those are each their own subject, and worth reading on their own.
After 38 years of pouring concrete in Calgary, the pattern we see is consistent: the committees that work are the ones with real terms of reference and honest inspection records behind them. The ones that fail are a binder nobody opened.
FAQ
Does a small concrete crew on a big site need its own committee? Not because of the site. The obligation follows the number of workers the employer regularly employs, so a four-person crew whose employer is over the threshold is covered by that employer’s committee.
Do subcontractors’ workers count toward my 20? No. You count the workers you regularly employ. A site-level count of 20 or more across several employers is a separate rule — and it does not apply where a prime contractor has been designated.
Do volunteers count? Not toward the threshold. Unwaged workers are excluded from the count, but they are still workers under the legislation and may serve as a member or representative.
How often does a committee have to meet? The Code does not set a fixed interval. The committee’s own written terms of reference must state the frequency and how records are kept — and a special meeting must be convened if an OHS officer requests one.
Is the government-approved training course still mandatory? No. The current requirement is training on three prescribed subjects, which the employer may deliver itself or source externally.
Work with a contractor whose paperwork survives an inspection
Governance shows up in the concrete. If you are assembling a team for a commercial or structural pour in Calgary, our commercial concrete services come with the documentation that a committee, an officer or an owner’s representative can actually read — across more than 52,000+ projects. Two useful companions when you are comparing bidders: what a real contractor warranty covers and why a local crew reads a Calgary site differently.
Call us to talk through the scope before the schedule locks.
Sources
- Alberta Occupational Health and Safety Act, Part 2 — Health and Safety Committees, Representatives and Programs: https://search-ohs-laws.alberta.ca/legislation/occupational-health-and-safety-act/part-2-health-and-safety-committees-representatives-and-programs/
- Alberta Occupational Health and Safety Code, Part 13: https://search-ohs-laws.alberta.ca/legislation/occupational-health-and-safety-code/part-13-joint-health-and-safety-committees-and-health-and-safety-representatives/
- Government of Alberta, Joint health and safety committees and representatives: https://www.alberta.ca/work-site-health-safety-committees
- Government of Alberta, OHS bulletin LI060, Health and safety committees and representatives (updated July 2025): https://open.alberta.ca/dataset/1ccb9ad6-4321-4363-8494-8a02bd5f56f4/resource/760ae448-bc1a-42d3-971e-23c7bdcd330e/download/jeti-ohsorp-li060-health-safety-committees-representatives-2025-07.pdf