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Investigation Reports: What to Include and What to Exclude
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The investigation had concluded 4 days earlier, but the report remained unwritten. A mid-sized professional services firm operating out of 3 offices across western Canada found itself at a critical juncture following a complaint filed by a senior administrative coordinator against a regional manager. The complaint alleged a pattern of conduct over approximately 8 months that included inappropriate comments, differential treatment, and 2 specific incidents that the complainant characterized as harassment.

The firm had engaged an external investigator with 15 years of experience in workplace matters. Over a 3-week period, the investigator interviewed 11 witnesses, reviewed 47 email exchanges, examined performance documentation spanning 2 years, and gathered security access records from the office building. Several witnesses corroborated aspects of the complainant's account, while others provided testimony that contradicted key elements. The regional manager denied the allegations and offered alternative explanations for the conduct described. Documentary evidence supported some factual claims but left others unresolved.

The investigator had now provided a verbal summary of preliminary conclusions to the director of human resources but had not yet drafted the formal report. The director faced pressure from multiple directions. Senior leadership wanted the matter resolved quickly and sought clear recommendations about whether discipline was warranted. The complainant had retained legal counsel and made a formal request for a copy of the investigation report. The respondent's union representative had already indicated that any disciplinary action would be grieved and that the investigation methodology would be scrutinized.

The firm's legal counsel had raised questions about litigation privilege and whether the report should be prepared under legal advice to protect certain communications from disclosure. Meanwhile, the human resources team had discovered that an early draft memorandum prepared during the investigation contained speculative commentary about the respondent's credibility that did not reflect the investigator's ultimate assessment—raising concerns about what should happen to preliminary documents.

The director of human resources understood that the written report would need to serve multiple functions simultaneously. It would need to document findings of fact sufficient to support whatever employment decision followed, withstand potential challenge at arbitration or before a human rights tribunal, satisfy disclosure obligations without compromising legitimately privileged material, and communicate outcomes to both parties in a manner that met the firm's legal obligations while preserving workplace relationships to whatever extent remained possible. The investigation had generated substantial evidence and clear analytical conclusions, but translating that work into a defensible written record presented its own distinct challenges.

Privilege, Disclosure, and Protecting the Investigation Record

Workplace investigations generate a paper trail that extends far beyond the final report. From the moment an employer receives a complaint, every note taken, every email exchanged, and every draft revised becomes part of a broader record that may one day be scrutinized by adjudicators, regulators, opposing counsel, or the parties themselves. Understanding how privilege, disclosure obligations, and record protection intersect is essential for any HR professional or employer seeking to conduct investigations that are both legally defensible and practically effective. The stakes are significant: a misunderstanding about what must be disclosed, what can be withheld, and how to protect sensitive information can undermine an otherwise thorough investigation and expose the organization to liability it might otherwise have avoided.

The concept of privilege in the investigation context refers primarily to solicitor-client privilege and litigation privilege, two related but distinct protections that shield certain communications and documents from disclosure. Solicitor-client privilege protects confidential communications between a lawyer and their client made for the purpose of seeking or providing legal advice. This privilege belongs to the client, not the lawyer, and can only be waived by the client. Litigation privilege, by contrast, protects documents and communications created for the dominant purpose of preparing for litigation that is reasonably anticipated or already underway. While solicitor-client privilege can exist indefinitely, litigation privilege expires when the litigation concludes. Both forms of privilege are recognized across Canadian jurisdictions, though their application in workplace investigations requires careful analysis of the specific circumstances.

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