Procedural Fairness in Workplace Investigations

What Procedural Fairness Means — and When It Is Legally Required

Procedural fairness is concerned with how a decision that affects a person is reached, rather than with the answer itself. In a private-sector workplace investigation there is no single, universal, freestanding procedural-fairness code that applies identically in every case, and it is wrong to assume that administrative-law natural justice attaches automatically to every private employer's inquiry.

The source and content of an enforceable obligation may instead arise from:

• the Fair Work Act 2009 (Cth), in particular the criteria the Fair Work Commission must consider under section 387 when deciding whether a dismissal was harsh, unjust or unreasonable;
• a modern award or enterprise agreement containing a disciplinary or dispute procedure;
• the employment contract, including any policy incorporated into it as a contractual term;
• other statutes — for example anti-discrimination, safety, whistleblower or industry-specific regulation;
• a public-sector employment framework or an administrative-law setting, where stricter natural-justice standards commonly apply.

Where no freestanding duty applies, a fair process is still important. It reduces the prospect of a successful challenge, produces a record that can be relied on later, and supports the organisation's own governance and safety obligations. The practical question for an employer is therefore not only "must we?" but "can we explain what we did, and why, if we are asked to?"

The Core Fairness Principles

Whatever the source of the obligation, the working content of fairness in a workplace setting is reasonably stable. The person affected should:

• know the case to answer — the allegations, put in plain language and sufficiently particularised;
• receive the substance of credible adverse material relied on against them, subject to legitimate confidentiality and safety limits;
• have a genuine opportunity to respond before the relevant decision is made, with reasonable time and reasonable adjustments;
• have the matter considered impartially by people who have not predetermined the outcome;
• have findings based on evidence assessed to the correct standard, not on assumption, rumour or reputation;
• be told the outcome and the reasons for it, to a level appropriate to the framework that applies.

How much formality each of these requires is proportionate. Not every complaint warrants a formal investigation. A preliminary assessment — is this a conduct allegation, a performance issue, a team dispute or a safety matter? — will often be the fairest and most effective first step, and may resolve a minor issue without a disciplinary process at all. Where performance rather than conduct is in issue, see our guide to managing underperformance.

Before the Investigation

Most fairness problems are designed in at the outset. Before anyone is interviewed, an employer should settle four things.

The applicable requirements. Identify the award, enterprise agreement, contract, policy or statutory framework that governs the process, and follow it. A failure to comply with the employer's own incorporated policy is one of the more avoidable sources of contractual risk.

Immediate risk. Triage safety, ongoing contact between the parties, access to systems, and the preservation of evidence such as emails, messages, rosters, CCTV and access logs. Interim measures should be neutral and proportionate, not punitive.

Scope and terms of reference. Record what is being investigated, the allegations to be tested, the material to be considered, the standard of proof and the form of findings required. Terms of reference protect the respondent from an open-ended inquiry and protect the employer from findings made outside scope.

Who does what. Appoint the investigator and identify, separately, the person authorised to make any employment decision. Confirm that neither has a material conflict, prior involvement in the events, or a stated view about the outcome. An internal investigator can be entirely appropriate; an external investigator may be warranted where the respondent is senior, the subject matter is sensitive or complex, internal relationships create conflict, or particular expertise is needed.

Particularising Allegations and Disclosing Adverse Material

An allegation should be expressed in plain language and particularised sufficiently for the employee to understand and answer it. Where reasonably available, that ordinarily includes the conduct alleged, the approximate time and place, the context, and the policy, contractual term or obligation said to be engaged. "Concerns about your behaviour" is not an allegation.

Disclosure requires more care than particularisation. Fairness does not invariably require an employer to provide every document, complete witness statements, every witness identity, cross-examination or legal representation. What the respondent ordinarily needs is the substance of the credible adverse material necessary to answer the case.

Several legitimate considerations may affect the form and timing of disclosure: privacy obligations, the safety of a complainant or witness, whistleblower confidentiality, legal professional privilege, and the risk of retaliation or contamination of evidence. Those considerations may justify summarising material, redacting it or staging its release. They do not justify withholding information to the point that the respondent cannot answer the substance of an allegation.

If new allegations emerge, or materially adverse information arrives after the respondent has been interviewed, the new substance must be put to them and a further response allowed before findings are made.

Interviews, Support People and a Genuine Opportunity to Respond

A response is only meaningful if the employee had a fair chance to prepare it and the decision-maker genuinely considered it. In practice that involves:

• Reasonable notice and preparation time, calibrated to the seriousness and complexity of the allegations and the volume of material. There is no universal minimum period, and prescribing one is usually a mistake.
• Access to relevant documents the employee needs to respond, subject to the disclosure limits above.
• Reasonable requests for more time, which should be considered on their merits rather than refused as a matter of course.
• Interpreters, accessibility and disability adjustments, and remote participation where that is suitable and does not compromise the process.
• Actual consideration of the response. The response is evidence to be weighed. If it raises a credible alternative account, further inquiry may be required before findings are made.

The opportunity must arise before the relevant decision is made and must be genuinely capable of affecting the outcome. A response invited after the decision has been settled is not an opportunity to respond.

On support people, section 387(d) of the Fair Work Act directs the Commission to consider any unreasonable refusal by the employer to allow a support person to be present in discussions relating to dismissal. It does not impose a general positive statutory duty to offer one. Sound practice is nevertheless to state in the meeting invitation that a support person may attend. A support person ordinarily supports the employee rather than advocating or answering for them, subject to any contrary requirement in a contract, policy or industrial instrument. There is no universal entitlement to legal representation in every internal investigation, although an employer may permit it, and may need to where the applicable framework requires.

Evidence, Credibility and the Briginshaw Principle

Workplace factual findings are ordinarily made on the balance of probabilities, subject to any different requirement in the governing instrument or framework.

Briginshaw v Briginshaw (1938) 60 CLR 336 is frequently misdescribed as creating a higher or third standard of proof. It does not. It recognises that the seriousness of an allegation, the gravity of the consequences that would flow from a finding, and the inherent likelihood of the conduct all bear on the strength and quality of evidence required before a decision-maker can be reasonably satisfied that the allegation is proved. A serious allegation with career consequences calls for correspondingly cogent evidence — not a different standard.

In assessing the material, an investigator should consider reliability, internal and external consistency, inherent plausibility, contemporaneous documents, motive, opportunity, corroboration and any evidence pointing the other way. Demeanour alone is an unsafe foundation for a credibility finding, particularly in a stressful internal interview.

It is also worth distinguishing between direct evidence, hearsay and inference. Hearsay is not automatically inadmissible in an internal investigation — the rules of evidence do not apply as they would in a court — but second-hand accounts generally carry less weight and should be tested where possible. Inferences should be identified as inferences and supported by the primary facts relied on.

Findings should be expressed in the language the applicable policy or terms of reference use — commonly substantiated, not substantiated, or unable to be determined. Avoid "guilty", which imports a criminal framing that does not apply. Equally, a finding that an allegation is not substantiated does not establish that it was false or made in bad faith, and should not be communicated as though it did.

From Factual Findings to Disciplinary Decisions

The investigation and the disciplinary decision are different tasks and should be consciously separated where practicable.

An investigator ordinarily gathers evidence and makes factual findings within the terms of reference. The terms of reference may also authorise recommendations, including recommendations about process or outcome, but any recommendation should be clearly distinguished from the factual findings and does not displace the authorised decision-maker's obligation to consider the evidence and the employee's response and to determine the employment outcome independently.

The decision-maker must independently consider the material rather than simply adopting a report, and must remain open to persuasion. Before discipline is imposed — particularly dismissal — the employee may need a further genuine opportunity to respond to the adverse findings, to any aggravating material relied on such as prior warnings, and to the outcome under contemplation.

Finally, a fair investigation does not automatically make the sanction lawful, proportionate or reasonable. Proportionality is assessed separately, taking account of the conduct found, the employee's role, length of service, disciplinary history, any explanation or mitigation, and how comparable matters have been handled. Where dismissal for misconduct is contemplated, see serious misconduct and termination.

Confidentiality, Privacy, Privilege and Protected Disclosures

Employers should not promise absolute confidentiality to anyone. Information should be limited to a genuine need-to-know basis, while recognising that fairness may require the substance of adverse material to be disclosed to the respondent.

Confidentiality directions given to participants must be lawful, reasonable and tailored to the matter. A blanket direction must not purport to prevent an employee from making a protected workplace complaint, participating in lawful union activity, reporting to a regulator, obtaining legal or medical advice, or making a protected disclosure.

On privilege, involving a lawyer or an external investigator does not by itself make an investigation or its report privileged. Privilege depends principally on the dominant purpose for which the material was created — legal advice or actual or anticipated litigation. Mixed purposes, such as an inquiry that is also intended to inform management action or a safety response, create real risk. Wide circulation of a report or inconsistent use of it may waive privilege. Advice should be obtained before commissioning an investigation intended to attract privilege.

Protected whistleblower disclosures under the Corporations Act 2001 (Cth) may impose strict restrictions on disclosing the discloser's identity and related information, and should be handled through the organisation's whistleblower process rather than an ordinary complaints channel.

It is also wrong to assume that all employee information is outside privacy law. The employee-records exemption available to private-sector employers is conditional and does not necessarily extend to job applicants, volunteers, contractors, external service providers, or handling that falls outside its statutory scope. Separate privacy, surveillance, health-records and confidentiality obligations may also apply.

Suspension and Interim Safety Measures

Suspension is an interim risk-management step, not a sanction, and it is not simply available on request.

• Paid suspension pending investigation requires a proper contractual, industrial, policy or other lawful foundation. It should be necessary in the circumstances, neutral in the way it is communicated, proportionate to the risk and reviewed as the investigation progresses.
• Unpaid suspension is materially riskier and requires clear lawful authority. Absent that authority it may expose the employer to claims including underpayment and repudiation.
• Statutory stand-down under section 524 of the Fair Work Act is a separate and narrow concept. It generally concerns a stoppage of work for which the employer cannot reasonably be held responsible. It is not a general power to remove an employee from the workplace during a misconduct investigation.

Alternatives — altered duties, changed reporting lines, remote work or restricted system access — should be considered, and any measure adopted should be explained as neutral and revisited as circumstances change. Our dedicated guide to suspension pending investigation covers the contractual and practical detail.

Unfair Dismissal, General Protections and Discrimination Risk

Unfair dismissal. Where a dismissal follows, the Commission considers all of the section 387 factors, including whether there was a valid reason related to capacity or conduct, whether the employee was notified of that reason, whether they were given a genuine opportunity to respond to it, any unreasonable refusal of a requested support person, warnings where performance is in issue, the size of the employer and its access to dedicated human resources expertise, and any other relevant matters.

Two points are frequently misunderstood. Notification of the reason and the opportunity to respond must occur before the decision to dismiss is made, not afterwards. And a procedural defect does not automatically render a dismissal unfair, just as serious misconduct does not automatically erase material procedural unfairness — the factors are weighed together. It is also worth remembering that the Commission determines for itself, on the evidence before it, whether there was a valid reason; that is a different task from the employer's earlier investigation. See unfair dismissal claims for eligibility, time limits and remedies.

General protections. Making a complaint or inquiry in relation to employment can be the exercise of a workplace right. Commencing an investigation, suspending, warning, altering duties or dismissing may each constitute adverse action. A procedurally neat process does not cure a decision taken for a prohibited reason. Where it is alleged in proceedings that adverse action was taken for a particular prohibited reason or with a particular prohibited intent, section 361 presumes that reason or intent unless the person who took the action proves otherwise, which is why contemporaneous evidence identifying the actual decision-maker and their genuine reasons is critical. Anti-discrimination and victimisation protections may operate concurrently. Claim procedure is covered in our guide to general protections and adverse action.

Psychological Health and the Positive Duty

In Victoria, psychological health at work is governed by the Occupational Health and Safety Act 2004 (Vic) and, from 1 December 2025, the Occupational Health and Safety (Psychological Health) Regulations 2025.

A complaint and investigation process can itself create psychosocial hazards for complainants, respondents and witnesses. Risk controls and support should not necessarily wait for final findings; interim measures should be neutral, proportionate and reviewed. Fairness and occupational-health-and-safety risk control are related but separate obligations, and an employee assistance programme is not by itself a substitute for identifying and controlling the risk. Our guide to psychosocial hazards in Victorian workplaces sets out the regulatory detail.

Where the complaint concerns sexual harassment, a fair investigation is only one possible response. The positive duty under the Sex Discrimination Act 1984 (Cth) requires reasonable and proportionate measures to eliminate relevant conduct so far as possible, and a compliant investigation after a complaint does not by itself discharge it. See the positive duty to prevent workplace sexual harassment.

Criminal and Regulatory Overlap

Where the conduct may be criminal, involves reportable conduct, engages a protected disclosure regime or has attracted regulator involvement, urgent advice should be obtained about evidence preservation, any mandatory reporting obligation, the sequencing of interviews and whether the internal process should be paused or adapted.

An internal process does not have to stop merely because police or a regulator are involved. The employer retains its own obligations. There is no universal right to refuse to answer questions in a private workplace investigation, and refusing to comply with a lawful and reasonable direction to participate or answer may have employment consequences — though contractual, industrial, statutory and public-sector frameworks may alter that position. Where answers may expose an employee to criminal, regulatory or professional disciplinary liability, urgent independent advice may be necessary, and the employer should obtain advice about reporting, evidence preservation, the sequencing of interviews and whether the internal process should be paused or adapted.

Communicating the Outcome

The respondent should receive an outcome that is sufficiently clear, with reasons appropriate to the applicable framework: what was alleged, what was found, on what basis, and what consequence follows.

The complainant should generally be told that the complaint has been addressed and, where appropriate, the findings relevant to them. Privacy and confidentiality obligations may prevent disclosure of another employee's disciplinary sanction. Employers should avoid promising any participant a complete copy of the investigation report, and should consider in advance what will be shared with whom.

Employer Procedural-Fairness Checklist

1. Identify the legal, industrial, contractual and policy requirements that apply, and whether a formal investigation is warranted at all.
2. Triage immediate safety, evidence-preservation and conflict issues.
3. Define the scope and written terms of reference, including the standard of proof and the form of findings.
4. Select an appropriate investigator and, separately, the authorised decision-maker.
5. Preserve relevant records, communications and system data.
6. Particularise the allegations in plain language.
7. Give notice of the interview, advise that a support person may attend, and make reasonable response arrangements including any adjustments.
8. Interview impartially and test competing accounts.
9. Put any materially adverse new information to the respondent and allow a further response.
10. Assess the evidence using the correct standard and record the reasoning.
11. Prepare reasoned findings within the scope of the terms of reference.
12. Separate the findings from the question of sanction.
13. Give an appropriate further response or show-cause opportunity before discipline is imposed.
14. Decide, and communicate the outcome and reasons appropriately to each participant.
15. Retain a defensible record and review any interim measures that remain in place.

Frequently Asked Questions

Authoritative Sources

• Fair Work Act 2009 (Cth), consolidated text — in particular sections 340–342, 351, 361, 387 and 524.
• Fair Work Commission — Unfair Dismissals Benchbook — valid reason, notification of reason, opportunity to respond and unreasonable refusal of a support person.
• Briginshaw v Briginshaw (1938) 60 CLR 336; [1938] HCA 34 — reasonable satisfaction on the balance of probabilities.
• Occupational Health and Safety Act 2004 (Vic) and the Occupational Health and Safety (Psychological Health) Regulations 2025.
• WorkSafe Victoria — psychological health regulations — employer duties from 1 December 2025.
• Sex Discrimination Act 1984 (Cth) — the positive duty to eliminate relevant unlawful conduct.
• OAIC — Employee records exemption — scope and limits of the employee-records exemption.
• ASIC Regulatory Guide 270 — Whistleblower policies and the Corporations Act 2001 (Cth) whistleblower protections.

Key Takeaways

Whether procedural fairness is legally binding in a particular matter, and what it requires, depends on the applicable source — statute, industrial instrument, contract, incorporated policy or public-sector framework. Even where no freestanding duty applies, the practical test is the same: can the employer explain what was alleged, what the employee was told, what they said in response, what was found, on what evidence, and who decided the outcome and why.

If your organisation is dealing with a workplace complaint, investigation or disciplinary matter, or wishes to review the way these issues are handled internally, contact Parke Lawyers for assistance.