Workplace Investigations: What Every Victorian Employer Should Know

1. Triage Safety, Legal Duties and the Right Process

Start with safety, not labels. Ask whether anyone needs urgent medical help, separation, changed supervision, systems access controls or other temporary protection. Avoid treating an interim control as punishment or as a finding that an allegation is true. Identify retaliation risk and ask the people affected what would help, without transferring the burden of risk control to a complainant.

If an incident may be notifiable under the Occupational Health and Safety Act 2004 (Vic), notify WorkSafe immediately and preserve the incident site to the extent the Act requires. The statutory test, including the specified injury and serious-risk categories, must be checked against the actual event; not every complaint or psychological hazard is a notifiable incident. A workplace investigation must not delay notification, emergency action or preservation obligations.

Then identify the pathways that may govern the response:

• employment contract, policy, code, award or enterprise agreement;
• occupational health and safety duties and required consultation;
• discrimination, sexual-harassment, bullying and victimisation laws;
• general protections and protected-disclosure regimes;
• public-sector, professional, child-safety or regulatory rules; and
• potential criminal conduct, insurer obligations or evidence-preservation needs.

A formal investigation is more likely to be useful where material facts are disputed, consequences may be serious, credibility must be assessed, a policy requires findings, or an authorised decision-maker needs a reliable factual record. Informal options may suit lower-risk matters where facts are accepted and the people involved freely support that approach. Informality must not be used to avoid a legal duty or leave a known hazard uncontrolled.

2. Define Scope, Allegations and Interim Measures

Write short terms of reference before evidence gathering expands. Identify the allegations or factual questions, relevant dates, policies and standards, the applicable proof standard, who will investigate, who will decide, expected outputs and how new issues will be handled. Do not ask an investigator to decide whether dismissal should occur unless that disciplinary function is deliberately and lawfully assigned.

Scope should be firm enough to prevent drift but capable of controlled amendment. If an interview or document reveals a new allegation or materially adverse information, record the change, gather what is relevant, and put the new matter fairly to the affected person before relying on it. Do not quietly expand the report beyond the allegations the respondent was asked to answer.

Consider paid precautionary suspension only after checking the contract, policy, award, enterprise agreement, statute and the lawfulness and reasonableness of the direction. Record the present risk, alternatives, pay and benefits, duration and review date. Section 524 of the Fair Work Act 2009 is an unpaid stand-down provision for specified industrial action, equipment breakdown or stoppage of work; it is not a misconduct-investigation suspension power. Our suspension guide addresses this distinction in detail.

3. Choose the Investigator and Support Participants

Receiving or triaging a complaint does not itself disqualify a manager. The relevant questions are whether the proposed investigator is a witness, implicated, has expressed a concluded view, has a relationship or interest that creates a material conflict, or lacks the time and skill required. Serious matters, senior respondents, technical evidence, protected disclosures or a small workplace with no practical internal separation may justify an external investigator.

Separate fact-finding from the disciplinary decision where practical. The investigator can determine facts and, if authorised, policy breaches. The employer's authorised decision-maker should independently consider those findings, the employee's response, mitigation, consistency and the available outcomes. Separation reduces prejudgment risk but is not a ritual: roles and authority must be clear in the actual organisation.

Support people, representatives and adjustments

Section 387(d) asks, in an unfair-dismissal case, whether the employer unreasonably refused a request for a support person to assist in discussions relating to dismissal. It does not impose a general positive obligation to offer a support person at every investigation interview. Offering one is nevertheless prudent, and broader rights may arise under an enterprise agreement, policy, union representation arrangement, disability-adjustment duty or other instrument.

Explain the proposed role rather than adopting a blanket ban on a union representative or advocate. A support person ordinarily supports rather than answers factual questions, but the lawful role depends on the governing instrument, purpose of the meeting and any reasonable adjustment. Plan breaks, accessible documents, interpreters, remote attendance, cultural needs and trauma-aware sequencing where appropriate. Trauma-informed practice should reduce avoidable harm, not assume an account is true or displace impartial testing.

4. Preserve and Assess Evidence Lawfully

Issue proportionate preservation instructions early. Identify emails, messages, rosters, access logs, CCTV, policies, prior reports, contemporaneous notes and relevant business records. Keep originals, document collection methods and avoid changing metadata. Preserve exculpatory and contextual material as well as material supporting the complaint.

Employer ownership of a device, account or system is not an unlimited permission to search everything on it. Check the employment and IT policies, privacy obligations, surveillance law, confidentiality, privilege and the relevance of the proposed search. Personal devices and accounts require particular care. Under the federal Privacy Act 1988, the employee-records exemption is conditional and does not broadly exempt every item collected during an investigation, every person involved or an external investigator's handling of information.

Recording also needs a deliberate protocol. In Victoria, whether a private conversation may be recorded and later communicated depends on the Surveillance Devices Act 1999, including who is a party, the device, consent, purpose and disclosure. A workplace direction or policy may matter separately. Do not rely on a general proposition that every interview may, or may not, be secretly recorded.

Weighing accounts and documents

Findings use the civil balance of probabilities. Briginshaw v Briginshaw does not create a criminal, third or higher standard. It informs the care required to reach reasonable satisfaction: serious allegations and grave consequences should not be accepted on inexact proof, indefinite testimony or indirect inference without careful reasoning.

There is no automatic corroboration requirement. A credible, sufficiently reliable account may support a finding, while multiple accounts can remain unreliable. Hearsay is not automatically worthless. Assess source of knowledge, detail, internal and external consistency, contemporaneous material, inherent plausibility, motive, opportunity, counterevidence and the extent to which the account could fairly be tested. Treat memory as reconstructive and demeanour as an unreliable shortcut; confidence, distress, eye contact and delay are not mechanical truth indicators.

5. Put Allegations and Adverse Material Fairly

Procedural fairness is not a universal free-standing public-law duty governing every private employer investigation. Obligations may arise from contract, policy, an industrial instrument, statute, the public-sector setting or the decision being contemplated. Separately, a fair and transparent process is good practice because it improves evidence and decision quality.

If dismissal follows, s 387(b), (c) and (d) of the Fair Work Act direct the Fair Work Commission to consider whether the employee was notified of the reason, given an opportunity to respond to a reason related to capacity or conduct, and unreasonably refused a requested support person in discussions relating to dismissal. The Commission also considers the employer's size and human-resources expertise under s 387(f) and (g).

Give the respondent allegations in intelligible particulars: alleged conduct, approximate time and place where known, relevant context and the policy or obligation potentially engaged. Names and documents need not be disclosed mechanically, but the person must understand the substance of material that may be relied upon and have a genuine chance to answer it. Put materially adverse new information before findings are finalised. Reasonable response time depends on volume, seriousness, representation, accessibility and urgency; an artificial deadline should not make the opportunity illusory.

Interview people separately. Start with open questions, then test specifics and inconsistencies without aggression. Explain purpose, process, confidentiality limits and non-retaliation expectations. Keep a reliable record and allow a suitable method for correcting material transcription errors. A signed statement is not a universal requirement.

6. Report Findings, Then Make the Employment Decision

A useful report addresses each allegation separately and states the applicable standard, evidence considered, material conflicts, reasoning and outcome. Use precise findings such as substantiated, not substantiated or unable to determine, as defined for the process. "Not substantiated" does not mean "false". Any allegation that a complainant knowingly lied is a separate matter requiring evidence, particulars and a response opportunity.

Distinguish facts, policy findings, legal advice and recommendations. The disciplinary decision-maker should not simply rubber-stamp a report. Before a warning, demotion or dismissal, identify the proposed consequence and give a genuine show-cause opportunity. Consider the established conduct, seriousness, safety, contract and instruments, prior record, service, insight, mitigation, consistency and alternatives. Neither an allegation nor a finding labelled serious misconduct makes dismissal automatic. See our guide to serious misconduct and termination.

Tell each participant the outcome at an appropriate level without automatically distributing the report or another person's private information. Record the actual decision-maker and their actual reasons. This matters where an employee exercised a workplace right, complained, disclosed wrongdoing or has a protected attribute: ss 340 and 351 prohibit specified adverse action, and s 361 creates a presumption about the alleged prohibited reason or intent unless the person who took the action proves otherwise.

If an employee resigns during the process, do not assume all risk ends. Under s 386(1)(b), a resignation may be a dismissal where it was forced by employer conduct or a course of conduct. The test is fact-sensitive and not met merely because an employee is unhappy, but delay, punitive measures, prejudgment or an intolerable process can become relevant evidence.

The Investigation Does Not Exhaust Employer Duties

Psychological health and consultation

The standalone Occupational Health and Safety (Psychological Health) Regulations 2025 (Vic) commenced on 1 December 2025. They were not an insertion into the 2017 Regulations. Together with the Occupational Health and Safety Act 2004, they require employers to identify psychosocial hazards, eliminate associated risks so far as reasonably practicable and, where elimination is not reasonably practicable, reduce them so far as reasonably practicable, with controls reviewed and revised in the prescribed circumstances.

An investigation can be one response to reported conduct, but it is not the risk-control system. Delay, repetitive interviewing, unnecessary disclosure, unmanaged contact and punitive interim measures can themselves cause psychological harm. Consult employees and health and safety representatives as required while protecting personal information, and separately address workload, supervision, work design, reporting channels and control failures. Our Victorian psychosocial-hazards guide covers the control framework.

Positive duties continue regardless of the finding

Section 47C of the Sex Discrimination Act 1984 (Cth) requires reasonable and proportionate measures to eliminate, as far as possible, five categories: sex discrimination in a work context; sexual harassment in connection with work; harassment on the ground of sex in connection with work; conduct creating a hostile workplace environment on the ground of sex; and related victimisation. Section 15 of Victoria's Equal Opportunity Act 2010 is a distinct duty concerning discrimination, sexual harassment and victimisation. An unsubstantiated individual allegation does not switch off prevention, risk-control or systemic-review obligations. See our positive-duty employer guide.

Bullying and single incidents

For the Fair Work Commission's anti-bullying jurisdiction, s 789FD requires repeated unreasonable behaviour towards a worker that creates a risk to health and safety, and excludes reasonable management action carried out in a reasonable manner. A single incident does not satisfy that repeated-behaviour definition, but it may still be serious misconduct, sexual harassment, discrimination, victimisation or an occupational health and safety hazard requiring action.

Confidentiality, Protected Disclosures and Privilege

Promise careful handling, not absolute secrecy. Limit information to people who need it for safety, investigation, decision-making or legal compliance. Tailored directions should preserve lawful access to a lawyer, union, representative, support person, treating practitioner, regulator or protected-disclosure channel. Anonymity may be impossible where the substance of an allegation must be put fairly, although unnecessary identifying detail should not be circulated.

Part 9.4AAA of the Corporations Act 2001 does not cover every workplace grievance. It depends on matters including an eligible whistleblower, a regulated entity, an eligible recipient or emergency/public-interest pathway, and qualifying subject matter. Personal work-related grievances are generally excluded unless a statutory exception applies, including where the matter has broader implications, concerns victimisation, or is disclosed to a legal practitioner for advice about the protections. Where the Part applies, restrictions on disclosing identity or identifying information override an ordinary HR sharing practice, subject to the Act's specific consent, regulator, police, legal-advice and investigation-information exceptions. Assess coverage at intake and before every identity disclosure; ASIC guidance should be used with the current Act.

Legal professional privilege is also not automatic. A lawyer's involvement and a "confidential" label do not establish it. The dominant purpose for which a communication or document is created must be legal advice or litigation. Mixed legal, disciplinary, operational and fact-finding purposes require careful analysis, and broad circulation, deploying a report to justify an outcome or selective disclosure may waive privilege. Decide the strategy, instructions, reporting lines and document handling before the investigation begins.

A Proportionate Small-Business Process

Small employers need not reproduce a large corporate process. Section 387 requires the Commission to consider enterprise size and the absence of dedicated human-resources expertise, but those factors do not lower substantive safety, discrimination, adverse action or contractual duties. A practical minimum record can be:

1. a dated triage note recording safety action and the chosen process;
2. a one-page scope identifying each allegation and governing standard;
3. lawfully preserved documents and separate interview notes;
4. the respondent's answer to all material adverse information;
5. short allegation-by-allegation findings with reasons; and
6. a separate show-cause record and decision reasons if discipline is proposed.

Independence may mean an uninvolved owner, board member or manager rather than an external investigator. Use external help where no one internal can be impartial, the allegations are grave, the evidence is complex, privilege or protected-disclosure questions arise, or the proposed outcome could threaten employment or the business.

Employer Investigation Checklist

1. Control urgent health, safety, retaliation and evidence risks.
2. Check WorkSafe notification and site-preservation duties immediately.
3. Identify every governing policy, contract, industrial and statutory rule.
4. Choose a proportionate pathway; do not demand a written complaint unless required.
5. Define allegations, scope, roles, proof standard and change-control process.
6. Select an investigator without a material conflict and a separate decision-maker where practical.
7. Set lawful, reviewed interim measures; distinguish paid suspension from s 524 stand down.
8. Preserve relevant evidence and confirm lawful device, recording and privacy access.
9. Arrange support, representation, breaks, accessibility and reasonable adjustments.
10. Put clear allegations and all materially adverse new information fairly.
11. Assess each allegation on the balance of probabilities with Briginshaw care where appropriate.
12. Record evidence, reasoning and outcomes; do not equate not substantiated with false.
13. Run a separate, proportionate show-cause and disciplinary decision.
14. Record the actual reasons and check retaliation, adverse-action and forced-resignation risks.
15. Communicate outcomes carefully and review systemic OHS and positive-duty controls.

Frequently Asked Questions

Primary Sources and Official Guidance

• Fair Work Act 2009 (Cth) — ss 340, 351, 361, 386, 387, 524 and 789FD.
• Fair Work Commission — unreasonable refusal of a support person and opportunity to respond.
• Occupational Health and Safety Act 2004 (Vic) and Occupational Health and Safety (Psychological Health) Regulations 2025 (Vic).
• WorkSafe Victoria — psychological health regulations and report an incident.
• Sex Discrimination Act 1984 (Cth) — s 47C; and Australian Human Rights Commission positive-duty guidance.
• Equal Opportunity Act 2010 (Vic) — s 15.
• Corporations Act 2001 (Cth) — Part 9.4AAA; and ASIC whistleblower protections.
• Privacy Act 1988 (Cth) and OAIC employee-records exemption guidance.
• Surveillance Devices Act 1999 (Vic).
• Briginshaw v Briginshaw (1938) 60 CLR 336; [1938] HCA 34 and Esso Australia Resources Ltd v Commissioner of Taxation (1999) 201 CLR 49; [1999] HCA 67.