Business Canterbury | HR Insights

Workplace Investigations: Key Considerations for Employers

Written by Michael Prisk | Sep 25, 2025 10:37:32 PM

Workplace Investigations: Key Considerations for Employers

Recent cases highlight a recurring issue: employers failing to conduct thorough and procedurally fair investigations when handling complaints such as bullying or sexual harassment. While informal resolution is often preferred, serious complaints—particularly those involving sexual harassment—require a formal investigation.

Here are key points employers should consider when conducting a workplace investigation:

  • 1. Formal Complaint
    Has a formal or written complaint been received? If so, check your policy for how to respond appropriately.
  • 2. Investigator Selection
    Decide whether an internal or external investigator is appropriate. Consider impartiality, expertise, and credibility.
  • 3. Terms of Reference
    Prepare clear terms of reference outlining the allegations, scope of investigation, process for gathering evidence, witness interviews, and report recipients.
  • 4. Rights and Support
    Advise all parties of their right to independent legal advice and the ability to bring a support person to meetings.
  • 5. Witness Identification
    Identify relevant witnesses. Witnesses generally cannot remain anonymous and must provide statements to relevant parties.
  • 6. Relevant Policies and Terms
    Consider any employment terms, policies, or procedures that may be relevant to the investigation.
  • 7. Decision-Maker
    Identify who will manage the outcome, including any subsequent disciplinary process, following completion of the investigation.
  • 8. Witness Statements
    Ensure witness statements are accurately compiled, signed, and reflective of the evidence provided.
  • 9. Investigation Report
    Compile a written investigation report with logical, supported, and clear findings. Where appropriate, give parties the opportunity to comment on the draft report before finalisation.

A well-structured investigation protects all parties involved and ensures that serious complaints are handled fairly, transparently, and in line with best practice.

 

We’re here to help.

If you need guidance or support with workplace investigations, the team at Business Canterbury is ready to assist.