Under the Ontario Occupational Health and Safety Act (OHSA), employers are legally mandated to conduct a fair, objective, and prompt investigation into any complaint of workplace harassment or violence. Ignoring a toxic situation can lead to the Ministry of Labour ordering a third-party investigation at the company’s expense. Corporate fines for violating these safety protocols can legally reach up to $2,000,000 CAD.
Every worker in Ontario deserves an environment free from intimidation, screaming, physical threats, and psychological abuse. Whether you are operating heavy machinery in a Hamilton steel plant, managing a busy retail storefront in London, or coding in a high-pressure Toronto startup, toxic behaviour can devastate your mental health and career. Historically, many managers brushed off aggressive behaviour as simply a “personality conflict” or “tough management.” Today, ignoring these issues is a severe violation of provincial law.
In Ontario, the Occupational Health and Safety Act (OHSA) was heavily updated by Bill 168 and Bill 132 to specifically address workplace violence and harassment. 📜 Under these rules, harassment is no longer just an HR issue; it is a fundamental health and safety hazard. The law explicitly requires that every single employer-regardless of size-must have a written policy and must conduct a formal investigation into any incident or complaint of workplace harassment. Conducting this investigation poorly, or being visibly biased toward a high-performing “bully,” exposes the company to massive legal liability. In this comprehensive guide, we will outline the exact steps required to conduct a legally compliant workplace investigation in Ontario.
Step-by-Step Process: Conducting an OHSA Investigation
When a worker comes forward with a complaint, the company cannot sit on it. The process must begin almost immediately. To protect both the complainant and the accused (the respondent), employers must follow a strict, impartial roadmap.
Step 1: Receive and Secure the Complaint
The process begins the moment a complaint is filed, whether it is written or verbal. The employer must immediately take steps to secure the environment. If there is an imminent threat of physical violence, the police must be called. If it is severe harassment, the employer may need to temporarily separate the two employees, alter their shifts, or place the accused on a paid administrative suspension while the investigation takes place. A suspension during an investigation is generally not considered disciplinary, but a safety measure.
Step 2: Appoint an Impartial Investigator
This is where many companies fail. The person conducting the investigation must be entirely objective and cannot be directly involved in the incident, nor under the direct control of the accused bully. For minor complaints in a large company, an internal HR professional is usually sufficient. However, if the accused is the CEO, a senior partner, or the business owner, the company must hire an external, third-party investigator (such as an employment lawyer or a licensed workplace investigator) to avoid a conflict of interest.
Step 3: Conduct Confidential Interviews
The investigator must formally interview the complainant, the respondent, and any relevant witnesses. Strict confidentiality must be maintained; witnesses should only be told enough information to answer the specific questions asked. The investigator must also collect all relevant physical and digital evidence, including intimidating emails, aggressive Slack messages, or security camera footage.
Step 4: Draft a Factual Findings Report
Once all interviews are complete, the investigator must analyze the evidence and determine, on a “balance of probabilities” (meaning it is more likely than not), whether the harassment actually occurred. 📋 They will draft a comprehensive report detailing the timeline, the evidence, and their final conclusion. If the investigator finds that the OHSA was violated, the employer must decide on the appropriate discipline, ranging from mandatory sensitivity training to immediate termination for cause.
Step 5: Notify Both Parties in Writing
Ontario law strictly mandates this final step. The employer must provide both the complainant and the respondent with the results of the investigation in writing. Furthermore, the employer must outline in writing any corrective action that has been taken or will be taken to prevent the harassment from happening again. Failing to provide this written conclusion is a direct violation of the OHSA.
How Much Does it Cost in Ontario?
Workplace investigations can be expensive, but failing to conduct one can bankrupt a business through government fines and civil lawsuits.
| Investigation Service or Penalty | Estimated Cost (CAD) |
|---|---|
| Internal HR Investigation | $0 (Included in internal payroll) |
| Third-Party Workplace Investigator | $250 to $600 per hour ($5k to $25k total) |
| Ministry of Labour Intervention | $0 (Provincial inspectors are free) |
| Maximum OHSA Fine (Individual) | Up to $500,000 CAD or 12 months in jail |
| Maximum OHSA Fine (Corporation) | Up to $2,000,000 CAD per offence |
| Superior Court Filing Fee (Lawsuit) | $339 CAD to issue a civil claim |
How Long Does the Process Take?
Ontario law requires that investigations be completed within a “reasonable time frame.” Under standard guidelines provided by the Ministry of Labour, Immigration, Training and Skills Development (MLITSD), a workplace investigation should generally be concluded within 90 days of the complaint being filed.
If the employer refuses to investigate, the employee can call the MLITSD. An inspector usually responds within a few days and can legally order the company to hire an external investigator. 📅 If the harassment leads to the employee resigning and filing a “constructive dismissal” lawsuit in the Superior Court of Justice, the civil litigation process generally takes 1 to 2 years. Ensure any civil claim is filed within Ontario’s strict two-year statute of limitations.
Frequently Asked Questions (FAQ)
Does the complainant get a copy of the full report?
No, not automatically. Under the OHSA, the employer is only legally required to provide a written summary of the results and any corrective actions taken. The full, detailed investigative report is generally considered a highly confidential corporate document, though it may be subpoenaed if the matter goes to court.
Can an employee be fired if there are no witnesses?
Yes. A workplace investigation is not a criminal trial. It operates on a “balance of probabilities.” If the investigator determines that the complainant is highly credible and the accused’s story is completely inconsistent, they can rule that harassment occurred even without third-party witnesses, potentially leading to termination.
What happens if the complaint is entirely false?
If a formal investigation definitively proves that an employee maliciously fabricated a harassment complaint to damage a coworker’s career, the complainant can face severe discipline. Making a knowingly false complaint is a breach of the duty of good faith and can be grounds for termination with cause.
Can an employee bring a lawyer to the interview?
In a non-unionized workplace, you generally do not have an absolute legal right to have a private lawyer present during internal HR interviews. However, unionized employees have the strict right to have their shop steward or union representative present during any investigative or disciplinary meeting.
Is general rudeness considered workplace harassment?
Not necessarily. A manager being blunt, demanding better performance, or enforcing strict deadlines is considered standard management, provided it is not done abusively. Harassment typically involves a course of vexatious comments or conduct that is known, or ought reasonably to be known, to be unwelcome.
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