Short answer
A new report says Alberta OHS and Alberta Health Services failed Cargill workers during the 2020 COVID-19 outbreak. WCB violence claims from health-care workers also hit a 10-year high. Both point to the employer duty to assess hazards and act.
Two stories this week point at the same thing: a hazard gets flagged, and not enough changes in time. One is a new independent report on the 2020 COVID-19 outbreak at Cargill's High River beef plant. The other is WCB data showing workplace violence claims from Alberta health-care workers at a 10-year high.
What the Cargill report says
The 199-page report, Essential and Expendable: How Alberta's COVID-19 Response Failed Cargill Workers, was released Monday by the Parkland Institute, a research centre at the University of Alberta. As reported by CBC, it concludes that systemic regulatory failure, inaction and overconfidence combined to produce what it calls a preventable tragedy.
According to the report, more than 950 workers — nearly half the plant's workforce — tested positive for COVID-19 in April and May 2020. Eighteen were hospitalized. Two workers died: Bui Thi Hiep, 67, a 23-year Cargill employee, and Benito Quesada, 51, a union shop steward. More than 650 close contacts also tested positive, and four of them died, as covered by Canadian HR Reporter.
As reported by Canadian HR Reporter, the report argues that Alberta's occupational health and safety regulator and Alberta Health Services both failed to use enforcement powers they already had. It describes a 30-minute virtual OHS inspection on April 15, 2020 that was recorded on a Cargill manager's phone, did not include direct conversations with frontline workers, and produced no compliance orders even though several hundred workers were already ill.
Lead author Sean Tucker, an occupational health and safety professor at the University of Regina, told CBC the report's main conclusion is that accountability is needed. Cargill says the breadth of the actions it took is not fully reflected in the report, and the province says it is reviewing the findings.
Violence claims hit a ten-year high
Canadian Occupational Safety reports that Alberta health-care workers filed 1,108 workplace violence claims with the WCB in 2025 — the most in a decade, and about 65% more than the 672 filed in 2016. Those are raw counts, not rates, and the province says the health-care workforce has grown 36% since 2019. Unions say the counts understate the problem.
Health care is not construction. But the duty behind those numbers is province-wide. In Alberta, violence is a workplace hazard: it has to be addressed in hazard assessments, employers must have a violence and harassment prevention plan, and every incident must be investigated. If your crews work alone, deal with the public, handle cash or work in occupied buildings, that duty applies to you.
What to do about it
Both stories describe the same pattern — a known hazard, a warning, and no verified fix. It is also the pattern that sinks COR audits and OHS inspections: hazard assessments that do not match how work is actually done, worker reports that go nowhere, and controls that were supposedly implemented but never checked.
Three things you can do this month:
- Re-walk your hazard assessments with the people who do the work, not only the supervisor.
- Give every worker hazard report a documented response, even when the answer is no.
- Verify controls after the fact — confirm the guard is back on, the procedure is followed, the fix actually happened.
If you want help tightening your hazard assessment process, building a violence and harassment prevention plan or getting audit-ready, Salient Health & Safety works with Alberta employers. Start with OHS program development or COR certification and audit prep, or book a free discovery call.
Frequently asked questions
What did the Parkland Institute report say about the Cargill outbreak?
The report concludes that Alberta's occupational health and safety regulator and Alberta Health Services failed to use the enforcement powers available to them during the 2020 COVID-19 outbreak at Cargill's High River plant. More than 950 workers tested positive, 18 were hospitalized, and two workers died, as reported by CBC and Canadian HR Reporter.
Do Alberta employers have to have a violence prevention plan?
Yes. Violence is a workplace hazard in Alberta, so it has to be addressed in hazard assessments, employers must have a violence and harassment prevention plan, and every incident must be investigated. The WCB claim figures reported this week show why those duties matter.
We're a construction company. Does the Cargill report apply to us?
The report is about a meat plant, but its main lesson is general: when workers raise a hazard and nothing changes, the risk compounds. For construction and trades employers, that means hazard assessments that reflect real work, documented responses to worker reports, and verifying that controls are actually in place.