How Should an Employer Conduct a Workplace Investigation Federally?
Federal, Ontario, and Alberta investigation duties at a glance
| Axis | Federal | Ontario | Alberta |
|---|---|---|---|
| Governing law | Canada Labour Code + Work Place Harassment and Violence Prevention Regulations | Occupational Health and Safety Act, s 32.0.7 | Occupational Health and Safety Code, Part 27 |
| When an investigation is triggered | Only after informal resolution fails and the employee requests one | An investigation “appropriate in the circumstances” for any incident or complaint | Built into the mandatory violence and harassment prevention plan |
| Who investigates | Agreed by both parties, or a qualified roster candidate after 60 days | Someone not involved in the incident and not controlled by the alleged harasser | Not specified by statute; fairness assessed after the fact |
| Timeline | No fixed deadline, but the file can’t return to conciliation once a report is filed | About 90 days is treated as reasonable absent compelling reasons | Not specified; judged for reasonableness, not perfection |
| Confidentiality | Notice to both parties required before proceeding | Info disclosed only if needed to protect workers or investigate | Plan must allow disclosure where necessary to investigate or report results |
| Telling the parties the result | Not detailed in the regulations reviewed here | Both the complainant and the alleged harasser (if still employed) get written results | Prevention plan must provide for informing parties of results and corrective action |
| Record retention | 10 years, plus annual reports to the Labour Program | Program reviewed at least annually; report not automatically given to inspectors | At least 2 years, produced to Alberta OHS on request |
Ontario’s duty comes from OHSA section 32.0.7, which requires an investigation “appropriate in the circumstances” for any incident or complaint of workplace harassment, generally completed within about 90 days unless there’s a compelling reason for delay, by someone who is not involved in the incident and not under the alleged harasser’s control. Once it’s done, the Ministry’s guide to the Act confirms both the complainant and the alleged harasser, if still employed, must be told in writing what was found and what corrective action follows, and the employer’s written harassment program has to be reviewed at least once a year.
Alberta folds the investigation into the mandatory violence and harassment prevention plan required under OHS Code Part 27, which must set out procedures for reporting, investigating, and documenting incidents, and must allow disclosure of otherwise confidential information where necessary to investigate, take corrective action, or tell the parties the outcome. Alberta.ca confirms the employer must then keep a written investigation report for at least two years and produce it to Alberta OHS on request.
Which law applies to your workplace
Whether the federal process applies turns on whether the Canada Labour Code covers the employer, not on where the head office happens to sit. That Code’s definition of the harm an investigation exists to address is broad: it covers any action, conduct, or comment, including of a sexual nature, that could reasonably be expected to cause offence, humiliation, or physical or psychological injury or illness. If the Canada Labour Code doesn’t apply to a given workplace, the employer instead follows Ontario’s Occupational Health and Safety Act or Alberta’s Occupational Health and Safety Code as summarized above; this site covers the Ontario-specific and Alberta-specific versions of this question separately, with the full step-by-step process for each province.
The federal investigation process, step by step
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Try to resolve the complaint informally first. Under the Work Place Harassment and Violence Prevention Regulations, a formal investigation of an “occurrence” (the regulatory term for an incident or complaint of harassment or violence) is only required “if an occurrence is not resolved” through the negotiated-resolution and conciliation steps that come first.
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The employee has to ask for it. Even after those earlier steps fail, an investigation must go ahead only if the principal party, meaning the employee who raised the complaint, requests it.
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Both sides get formal notice. Before an investigation proceeds, section 26 of the regulations requires the employer or its designated recipient to notify both the principal party and the responding party (the person accused) that an investigation is to be carried out.
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Choosing the investigator follows a set order. The parties can agree on who investigates; if there’s no agreement within 60 days of the notice, the employer must pick someone from the roster of people the Canadian Centre for Occupational Health and Safety identifies as qualified. Whoever is chosen, agreed or defaulted, must meet the knowledge, training, and experience requirements set out for investigators in the regulations.
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A complaint doesn’t always lead to an investigation. If the responding party has already left the workplace by the time notice would be given, ESDC guidance confirms no investigation is required. Instead, the employer must review and update its workplace harassment and violence risk assessment.
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Resolution beats investigation, right up until the report lands. If the parties settle the occurrence under the earlier resolution or conciliation steps before the investigator delivers a report, the investigation must be discontinued. Once the investigator has submitted their report, though, the matter can no longer be diverted back to conciliation.
Fatal incidents, records, and reporting deadlines
A death changes the timeline entirely. Under section 37(1) of the regulations, an occurrence that results in an employee’s death must be reported to the Head of Compliance and Enforcement within 24 hours of the employer becoming aware of it, separately from the investigation process described above.
Once an investigation is complete (or discontinued), the paperwork has a long shelf life. Government of Canada guidance confirms that all records of an occurrence, including the investigator’s report, police reports, and the employer’s annual reports to the Labour Program, must be kept for 10 years, kept readily available, and provided to the regulator when required.
Frequently asked questions
Answered in the frontmatter above.
Frequently asked questions
Do federally regulated employers have to try to resolve a complaint before investigating?
Yes. Federally, the Work Place Harassment and Violence Prevention Regulations only require a formal investigation once the earlier resolution and conciliation steps have failed, and even then only if the employee who complained (the "principal party") asks for one. If the matter settles before the investigator reports, the investigation must stop.
What happens if the accused employee has already quit?
Federally, no investigation is required if the person accused (the "responding party") is no longer in the workplace by the time notice would be given. The employer must instead review and update its workplace harassment and violence risk assessment. This exception is specific to the federal regime; it was not verified for Ontario or Alberta.
Is there a fixed deadline to finish a workplace investigation?
Federally, the regulations do not set a fixed number of days, though the matter cannot be sent back to conciliation once the investigator has filed a report. In Ontario, Ministry of Labour guidance treats roughly 90 days as reasonable absent compelling reasons for delay. No equivalent fixed timeline was found for Alberta.
Does an internal investigation have to be perfect to hold up later?
In Alberta, a labour arbitrator reviewing an employer's internal investigation has held that the standard is reasonableness, not perfection, provided the person under investigation knew the allegations and had a genuine chance to respond. This is Alberta arbitral case law, not a federal or Ontario rule.
Sources
- Work Place Harassment and Violence Prevention Regulations , SOR/2020-130, ss 24, 25, 26, 27, 37
- Government of Canada – Requirements for employers to prevent harassment and violence in federally regulated workplaces , Canada Labour Code, RSC 1985, c L-2, s 122(1); Work Place Harassment and Violence Prevention Regulations, SOR/2020-130, ss 29, 36
- ESDC – Work place harassment and violence prevention (943-1-IPG-104) , Interpretations, Policies and Guidelines 943-1-IPG-104
- Ontario Ministry of Labour – Workplace harassment: how employers can investigate , Occupational Health and Safety Act, RSO 1990, c O.1, s 32.0.7 (Ministry guidance)
- Government of Ontario – Guide to the Occupational Health and Safety Act, Part III.0.1 , Occupational Health and Safety Act, RSO 1990, c O.1, s 32.0.7
- Alberta OHS Legislation Portal – Part 27, Violence and Harassment , Occupational Health and Safety Code (Alberta), Part 27
- Alberta.ca – Workplace violence and harassment , Occupational Health and Safety Act, SA 2017, c O-2.1
- CanLII – Health Sciences Association of Alberta v Alberta Health Services , 2023 CanLII 37831 (AB GAA), para 97