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HR Lawyer's Playbook for Workplace Harassment Investigations
June 12, 2025 Leslie Smith

As an HR lawyer with extensive experience in Ontario workplace investigations, I've guided organizations through countless harassment complaints.
The legal landscape surrounding workplace harassment has evolved significantly, making professional guidance more crucial than ever. Understanding the complex requirements can mean the difference between effective resolution and costly litigation.
Why Every HR Lawyer Emphasizes Investigation Urgency
When harassment complaints arise, time is critical. Under Ontario's Occupational Health and Safety Act, employers have a legal duty to investigate workplace harassment complaints promptly. As an HR lawyer, I consistently advise clients that delayed investigations create several risks:
- Evidence deteriorates over time
- Witnesses' memories fade
- The workplace environment may worsen
- Legal liability increases with inaction
Moreover, the Human Rights Code requires employers to respond appropriately to harassment complaints. Failure to investigate can result in significant financial penalties and reputational damage.
The HR Lawyer's Framework for Investigation Planning
Before beginning any harassment investigation, proper planning is essential. As an HR lawyer, I recommend establishing clear protocols that address:
Investigation Team Selection
Choosing the right investigator is crucial. The investigator must be:
- Impartial and free from conflicts of interest
- Trained in investigation techniques
- Knowledgeable about relevant legislation
- Capable of maintaining confidentiality
Many organizations benefit from external investigators, particularly for senior-level complaints or complex situations involving multiple parties.
Scope and Timeline Definition
Every investigation requires clear boundaries. Define what allegations will be examined and establish realistic timelines. While thoroughness is important, unnecessarily prolonged investigations can harm all parties involved.
Legal Requirements Every HR Lawyer Must Address
Procedural Fairness Standards
Canadian courts consistently emphasize procedural fairness in workplace investigations. This means:
- All parties must have opportunities to respond to allegations
- Evidence must be gathered objectively
- Conclusions must be based on credible evidence
- The process must be documented thoroughly
As an HR lawyer, I've seen investigations fail because these fundamental principles were ignored.
Privacy and Confidentiality Obligations
Balancing investigation needs with privacy rights requires careful consideration. Personal information must be collected, used, and disclosed in compliance with privacy legislation. Additionally, confidentiality helps protect all parties from unnecessary reputational harm.
The HR Lawyer's Investigation Process
Initial Assessment and Interim Measures
Upon receiving a complaint, conduct an initial assessment to determine:
- Whether the allegations, if true, would constitute harassment
- What interim measures might be necessary
- Whether external resources are required
Interim measures might include temporary reassignments or modified reporting structures. However, these should not prejudge the investigation outcome or unfairly impact any party.
Evidence Collection and Documentation
Thorough evidence collection forms the investigation's foundation. This includes:
- Detailed interviews with all relevant parties
- Review of relevant documents and communications
- Examination of policies and procedures
- Collection of any physical evidence
Every step must be documented meticulously. Poor documentation often undermines otherwise solid investigations.
Interview Techniques and Best Practices
Effective interviews require skill and preparation. Key principles include:
- Creating a comfortable, private environment
- Asking open-ended questions initially
- Following up with specific clarifying questions
- Avoiding leading or suggestive questions
- Taking detailed notes or recordings (with consent)
Common Pitfalls HR Lawyers Help Organizations Avoid
Bias and Predetermined Outcomes
Investigations must be conducted with an open mind. Predetermined conclusions or investigator bias can invalidate the entire process. This is why many organizations engage external HR lawyers for complex investigations.
Inadequate Follow-Up
The investigation doesn't end with findings. Appropriate follow-up actions might include:
- Disciplinary measures if harassment is substantiated
- Policy revisions or training programs
- Ongoing monitoring of the workplace environment
- Support for affected employees
Documentation Deficiencies
Poor documentation creates legal vulnerabilities. Every investigation should produce a comprehensive report that includes:
- Summary of allegations
- Investigation methodology
- Evidence reviewed
- Findings and conclusions
- Recommended actions
When to Engage an HR Lawyer
Consider engaging an HR lawyer when:
- Allegations involve senior management
- Multiple complaints exist against the same individual
- The situation involves potential criminal conduct
- Previous investigations have been challenged
- The organization lacks internal investigation expertise
At Leslie J. Smith Law, we provide comprehensive workplace investigation services. Our experience as HR lawyers ensures investigations meet legal requirements while protecting organizational interests.
Moving Forward After Investigation
Regardless of investigation outcomes, organizations must take appropriate action. This might include policy updates, training programs, or disciplinary measures. The key is ensuring the workplace remains safe and respectful for all employees.
Contact Leslie J. Smith at 905-257-7714 for expert guidance on workplace harassment investigations. As an experienced HR lawyer, I help organizations navigate these complex situations while minimizing legal risks and protecting all parties involved.
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