Trauma-Informed Approaches in Psychosocial Risk Management: Preventing Harm, Reducing Legal Risk

A practical guide to embedding trauma-informed practices in workplace investigations, grievance processes, and risk management systems

Dr. Georgi Toma  |  Director, HeartBrain Works  |  Honorary Research Fellow, University of Auckland 

Introduction

Workplace investigations, grievance processes, and disciplinary procedures are intended to protect employees. But when they are not conducted with an awareness of how trauma operates, they can cause the very harm they are meant to prevent. An employee who has experienced harassment, bullying, or a serious workplace incident may arrive at an investigation interview already in a state of psychological distress. If the process fails to account for that reality, it can deepen that distress significantly — producing retraumatisation, psychological injury, or long-term disengagement that may ultimately result in a workers' compensation claim.

This is not a theoretical concern. The case of Alicia v Vision Australia, decided in 2024, resulted in a compensation award of 1.4 million AUD for psychological injury that stemmed from what the court characterised as poorly conducted organisational processes. It is one of a growing number of high-profile decisions that underscore the legal and human consequences of investigations that lack trauma sensitivity.

This article is drawn from a webinar delivered through the HeartBrain Works monthly professional development program in April 2025. It explores what it means for an organisation to be trauma-informed, why that matters from both a legal and ethical standpoint, how trauma responses manifest in workplace settings, and how to begin embedding trauma-informed principles into organisational structures, processes, and risk management systems.

What Does It Mean to Be Trauma-Informed?

A definition from the Substance Abuse and Mental Health Services Administration (SAMHSA, 2014) provides a useful foundation. A program, organisation, or system that is trauma-informed realises the widespread impact of trauma; understands the potential paths for healing; recognises the signs and symptoms of trauma in staff and others involved in the system; and responds by fully integrating knowledge about trauma into policies, procedures, practices, and settings.

Several aspects of this definition deserve emphasis. First, it is comprehensive — trauma-informed practice is not limited to individual conversations or one process. It applies to the whole system. Second, it is active — the organisation responds and integrates, not merely acknowledges. Third, it encompasses staff as well as those who come through the organisation's processes. The HR professional, the investigator, and the manager managing a difficult team situation are themselves at risk of vicarious trauma and need to be included in the organisation's thinking about support.

It is also important to note what trauma-informed practice is not. It is not about softening processes to the point that they lose rigour or fairness. It is not about believing every account uncritically. And it is not about transforming HR and WHS professionals into therapists. It is about conducting legitimate, well-structured processes in ways that do not cause additional harm — and that actually produce better outcomes because participants are able to engage with them safely and effectively.

Why It Matters: The Legal and Organisational Case

There are three distinct reasons why trauma-informed risk management has become a priority for WHS and HR professionals.

The first is the direct potential for harm. Research has established that workplace investigations, grievances, and risk management processes can unintentionally harm employees (Brennan, 2020). The experience of loss of control, of feeling unsafe or disbelieved, of not understanding what is happening or why — these are not minor inconveniences. For someone who has already experienced trauma, they can constitute a reactivation of that original harm.

The second is the legal and financial exposure. Psychological injury claims have increased substantially across Australian and New Zealand workplaces and now represent a major cost driver in workers' compensation. The data from Safe Work Australia consistently points in this direction. Moreover, legislative developments — particularly around presumption of injury for PTSD in first responder agencies — mean that the evidentiary burden has shifted. Organisations that cannot demonstrate that their processes were conducted appropriately, and that they took reasonable steps to prevent psychological harm, are increasingly exposed.

The third is the duty of care. Under Work Health and Safety legislation across Australian states and territories, organisations have a positive duty to prevent harm — including psychological harm (Safe Work Australia, 2022). Applying that duty only to the original hazard that prompted an investigation, while ignoring the psychological impact of the investigation itself, is a significant gap. The investigation process is itself a potential psychosocial hazard, and should be treated as one.

Understanding Trauma Responses in the Workplace

For trauma-informed practice to be effective, the people conducting investigations and managing difficult processes must understand how trauma responses actually manifest in behaviour. The classic framework identifies four responses — fight, flight, freeze, and fawn — and each looks quite different in a workplace investigation context (Levine, 1997; Herman, 1992; SAMHSA, 2014).

A fight response is characterised by confrontation, defensiveness, anger, and the challenging of authority. In an investigation interview, this can present as an employee who angrily disputes all allegations, accuses the investigator of bias, raises their voice, or threatens to make a formal complaint against HR. The instinctive response to this behaviour — to match the escalation, to push harder for answers, to treat the aggression as evidence of guilt — is precisely the wrong approach. The fight response is not a sign of bad faith. It is a physiological reaction to perceived threat.

A flight response involves withdrawal, avoidance, and disengagement. Repeatedly cancelling scheduled interviews, calling in sick before meetings, or declining to respond to communications are all consistent with this pattern. Again, treating these behaviours as uncooperative or evasive, without considering that they may represent a trauma response, risks compounding harm and drawing incorrect conclusions.

A freeze response involves emotional shutdown, minimal responses, memory gaps, and dissociation. In an interview, this might look like a participant who struggles to answer questions, appears confused, says they do not remember things, or provides an account that is inconsistent in its sequencing of events. This is probably the most consequential of the four responses from an investigation integrity perspective, because it is the one most commonly misinterpreted as dishonesty. An employee who cannot recall the precise order of events, or who appears blank and non-responsive, is not necessarily lying. They may be experiencing a neurobiological response to trauma that impairs memory and processing in ways that are well-documented in the research literature (Herman, 1992).

A fawn response involves over-agreeing, excessive compliance, and people-pleasing — particularly in situations perceived as threatening. In an investigation context, this might look like an employee who agrees with every proposition put to them, including those that appear to contradict their own account. This, too, can produce inaccurate findings if the investigator mistakes compliance for confirmation.

The critical principle that underpins all four of these responses is that they are not signs of weakness, dishonesty, or resistance. They are adaptive survival strategies, wired into the mammalian nervous system over millennia. Traditional investigation techniques — pressuring for quick, definitive answers, confrontational questioning, interpreting silence or confusion as evasion — can exacerbate these responses and produce a process that is less rigorous, not more. Adjustments to technique that are made in response to trauma responses are not a compromise of process integrity. They are what enables a process to be genuinely thorough and fair.

The Six Core Principles of Trauma-Informed Practice

The SAMHSA framework identifies six core principles that, taken together, provide the foundation for trauma-informed practice at an organisational level. Each principle applies well beyond the investigation context — they are relevant to grievance procedures, return-to-work processes, change management, and any situation in which employees are asked to engage with processes that carry personal stakes.

Safety is the foundational principle: creating conditions — physical, emotional, and psychological — where employees feel secure, respected, and not at risk of further harm. In practical terms, this means conducting investigation interviews in neutral, private settings rather than rooms with glass walls visible to the open plan office. It means informing people in advance and in writing of what to expect from a meeting: who will be present, what the purpose is, what the steps are, and what the anticipated timeline is. Predictability creates safety. Surprises, even unintentional ones, activate threat responses.

Trustworthiness and transparency means maintaining clear, honest, and consistent communication throughout a process. Providing written information about investigation steps, timelines, and the limits of confidentiality is a minimum standard. Following through on commitments — notifying someone when a timeline has changed, giving regular updates even when there is nothing significant to report — is what sustains trust once it has been established. Being honest about what the organisation can and cannot guarantee, particularly with respect to anonymity and outcomes, is also essential. Overpromising and underdelivering erodes trust more than honesty about limits would have.

Peer support acknowledges that one of the most psychologically harmful aspects of going through a difficult workplace process is the sense of isolation — the feeling that no one understands, that the person is facing the organisation alone. Allowing employees to have a support person present during interviews (a colleague, a union representative, or a family member) is a straightforward and often underutilised measure. Providing access to an EAP with peer counsellors who have experience of workplace trauma is more substantive. Most powerful of all is an established peer support program within the organisation — colleagues who are trained, accessible, and trusted. The evidence from first responder settings, healthcare, and other high-exposure environments is consistent: peer support programs are among the most effective buffers against the cumulative psychological impact of difficult work and difficult processes.

Collaboration and mutuality addresses the power imbalance that is inherent in any process where an organisation is investigating an employee. The aim is not to pretend that the imbalance does not exist, but to take deliberate steps to reduce it wherever practicable. Framing an investigation as a shared fact-finding process rather than a punitive one changes the dynamic significantly — and it begins with the language used by investigators and managers. Asking employees for their input on practical matters, such as their preferred scheduling or interview format, is a small but meaningful expression of partnership. Engaging employees genuinely when developing or reviewing the policies that govern these processes — rather than presenting them with a finished document — is a more structural form of this principle.

Empowerment, voice, and choice recognises that one of the most common effects of trauma is a loss of the sense of control and autonomy. Organisational processes can compound this if they treat people as passive subjects rather than active participants. Giving employees options — where appropriate, offering a choice of investigator; allowing them to take breaks during interviews; acknowledging their resilience and coping efforts during difficult conversations — restores some measure of agency. This principle also applies broadly to change management, which is among the most significant organisational sources of psychosocial risk. How many organisations have asked themselves, before announcing a restructure or system change, how to embed choice and voice into that process for the people most affected?

Cultural, historical, and gender issues is the principle that calls for cultural humility: the recognition that an employee's experience of organisational processes is not culturally neutral. Past experiences of discrimination, racism, colonisation, or gendered violence can profoundly affect a person's capacity to trust organisational systems and the people who represent them. Providing culturally appropriate supports — Indigenous liaison officers, translation services, or access to community representatives — is part of this. Equally important is training investigators and HR staff in unconscious bias and culturally sensitive interviewing, so that their conduct of processes does not inadvertently reactivate historical experiences of injustice.

Restorative Justice: A Natural Partner

Beyond the six principles, restorative justice deserves specific attention as a complement to trauma-informed practice. A formal investigation resolves a process — it produces a finding and, where warranted, a sanction. But it does not necessarily repair the harm that was done or rebuild the working relationship between the parties involved. Two people who have been through a bullying investigation may share a workplace for years afterwards without the underlying rupture ever having been addressed.

Restorative justice is an approach that focuses on repairing harm through structured dialogue — acknowledgment of wrongdoing, accountability, and a supported process of healing and closure (Herman, 1992). In a workplace context, this might look like voluntary post-investigation meetings facilitated by a skilled practitioner, designed to give both parties an opportunity to speak and to hear. Used after bullying or discrimination incidents, restorative approaches have shown significant value in repairing damaged working relationships and preventing the lingering psychological harm that unresolved conflict tends to produce.

Two important boundaries apply. Restorative processes must always be voluntary — they cannot be imposed on the person who was harmed. And they must never replace the formal process, particularly in cases involving serious misconduct such as sexual harassment or violence. They are an option that can be offered after formal processes conclude, if appropriate and if the harmed party wishes to participate. The flowchart for conflict resolution should not end at investigation → outcome → exit. It can also include investigation → repair → restoration, where that is both possible and desired.

Applying the Principles: Three Scenarios

Understanding the principles in the abstract is valuable. Seeing them in action against realistic scenarios makes them usable.

The distressed interviewee. During an investigation interview about bullying allegations, the employee begins to cry quietly after answering a difficult question about a conflict with their supervisor. They apologise repeatedly for being emotional and try to continue without taking a break.

The appropriate response is to pause the interview gently and normalise the emotional response — this is a difficult conversation, and emotion is a reasonable and human reaction to it. The investigator can offer a break without framing it as an obligation: "Would you like to take a short break? We can continue when you are ready — there is no rush." This also provides an opportunity to remind the employee that they are entitled to bring a support person to future meetings if they would find that helpful.

The defensive interviewee. An employee accused of misconduct becomes increasingly angry during the interview. They raise their voice, accuse the investigator of having already decided the outcome, and threaten to lodge a formal complaint against HR.

The first task is to recognise this as a probable fight trauma response — the anger and defensiveness are most likely driven by fear, not malice. The investigator's demeanour is critical: remaining calm and not mirroring the escalation is both professionally necessary and therapeutically significant. The investigator can validate the emotion without conceding to inappropriate behaviour: "I hear that this is very stressful and that you feel you are being treated unfairly. I want to reassure you that I am committed to understanding your perspective fully." If the behaviour becomes unacceptable, gentle but firm limits can be set, and the option to reschedule can be offered if the employee needs time to regroup. Throughout, the goal is to restore a sense of safety — and the six principles, taken together, provide the map for doing that.

Disclosure of past trauma. During a harassment investigation, the employee discloses that they experienced childhood abuse and that the current process is activating memories of that earlier trauma. They are visibly distressed and unsure how much they wish to share.

The investigator's primary response should be to acknowledge and thank the employee for their trust. The next task is to gently clarify which elements of the disclosure are relevant to the current investigation — staying focused without probing unnecessarily into material that falls outside the scope of the inquiry. The employee should be reminded of available support services and reassured that they are not obliged to share more than they are comfortable sharing. After the interview, the investigator should document what occurred factually and compassionately, and follow internal protocols for handling sensitive disclosures.

Embedding Trauma-Informed Practice Systematically

The most important structural point about trauma-informed practice is that it cannot be effective if it is applied ad hoc or limited to a single process. Individual actions — a more thoughtful investigation letter, a better-run interview — are valuable, but their impact is constrained if the broader organisational system operates in ways that are not trauma-sensitive. The practice must be embedded into structures, policies, and risk management systems to achieve its full effect.

At the policy and procedure level, workplace investigation policies should specify employee rights clearly, including support person entitlements, and should provide options for trauma-informed interview practices such as breaks and flexible scheduling. Grievance and complaint procedures should address not only procedural fairness but emotional safety, and should include references to support services as a standard element of all communications — so that every letter or email about a grievance routinely includes information about EAP access and referral pathways.

At the risk management level, investigation processes themselves should be identified as potential psychosocial hazards in the organisation's risk register. A useful framing question for risk assessments is: how might our investigation, disciplinary, or complaints management processes expose staff to psychological harm? Control measures that flow from that question might include pre- and post-investigation psychological support, trauma-sensitive communication protocols, mandatory training in trauma-informed techniques for HR and WHS staff, and restorative justice pathways where appropriate.

There is also a group whose wellbeing is often overlooked in this conversation: the investigators, HR staff, and managers who conduct these processes. They are regularly exposed to distressing material, navigate complex and emotionally charged situations, and carry the weight of decisions that have significant consequences for the people involved. They are at meaningful risk of vicarious trauma. Providing structured reflective practice sessions or peer support specifically for this group is not an optional extra — it is a duty of care owed to the people who manage these most difficult organisational processes.

A Roadmap for Implementation

Moving from awareness to practice requires a staged approach. The actions below are organised across three time horizons, providing a practical framework for implementation regardless of where an organisation currently sits on its trauma-informed journey.

In the short term — within the next one to three months — the most accessible starting points are updating investigation invitation letters to include trauma-informed language (the right to a support person, a clear explanation of the process and timeline, details of who will be present), introducing short training for HR staff and investigators on trauma basics and trauma-sensitive interviewing, and establishing flexible interview practices (breaks, remote options, scheduling flexibility). Adding support service information to all grievance and complaint communications is another straightforward step with immediate protective value. Post-investigation debrief offers — optional psychological support after a process concludes — can also be introduced quickly and signal to employees that the organisation's concern for their wellbeing does not end when the formal process closes.

In the medium term — over the following six to twelve months — the focus should shift to reviewing and updating all grievance, investigation, and disciplinary policies to embed emotional safety, empowerment, and transparency alongside procedural fairness. Building trauma awareness into psychosocial risk assessments so that investigation and disciplinary processes are formally identified as potential hazards is a structural step of significant importance. Training managers in trauma-informed leadership principles — particularly those leading teams that have been affected by misconduct, conflict, or complaints — addresses a gap that has both organisational and individual consequences. And establishing reflective practice or peer support structures for HR staff and investigators protects the people who do this work.

Long-term actions are about institutionalisation: embedding trauma-informed principles into organisational values so that the commitment is public and enduring; including trauma-informed practice metrics in WHS governance reporting so that board oversight extends to this dimension of psychosocial risk; building ongoing development partnerships with specialist providers so that capability grows across levels rather than being addressed through one-off interventions; and developing a restorative justice practice framework for post-investigation repair where appropriate.

Conclusion: Processes That Protect, Not Harm

The shift to trauma-informed practice in psychosocial risk management is both a legal imperative and an ethical one. Organisations have a duty of care that extends to the processes they use to manage harm — not just to the original events that prompt those processes. When that duty is not met, the costs are real: psychological injury to employees, workers' compensation claims, legal exposure, and the erosion of trust that makes workplaces less safe for everyone over time.

The good news is that the principles and practical tools required to make this shift are available and well-evidenced. They do not require organisations to become therapeutic services or to compromise on the integrity and rigour of their investigations. They require a commitment to conducting legitimate processes in ways that treat people as human beings — and to building systems that reflect that commitment at every level.

The work is demanding, particularly where it touches on deeply ingrained habits of investigation and management. But it is achievable, and for the people who pass through these processes, it matters enormously.

If you need support in embedding trauma-informed practices in your organisation, we are to help. Get in touch with us! 

References

Brennan, N. (2020). The psychological impact of workplace investigations on complainants and respondents.

Herman, J. L. (1992). Trauma and Recovery. Basic Books.

Levine, P. A. (1997). Waking the Tiger: Healing Trauma. North Atlantic Books.

Safe Work Australia (2022). Managing psychosocial hazards at work: Code of Practice.

Substance Abuse and Mental Health Services Administration-SAMHSA. (2014). Trauma-Informed Care in Behavioral Health Services. U.S. Department of Health and Human Services.

About the Author 

Dr. Georgi Toma is the Director of HeartBrain Works and an Honorary Research Fellow at the University of Auckland. With over a decade of experience in psychosocial risk, occupational stress, and culture interventions, Georgi has supported high-profile clients including Myer, RMIT University, Uber, Hitachi Energy, Clough Group, MEC Mining, and Environment Canterbury to create mentally healthy workplaces. HeartBrain Works offers validated psychosocial risk audits, training for leaders and staff, and the scientifically validated Wellbeing Protocol. 

About the Healthy Work Community of Practice 

The Healthy Work Community of Practice is a professional community for health and safety professionals. Members access quarterly knowledge-sharing sessions, a psychosocial risk controls library, real-world case studies, regulatory alerts, practical toolkits, a job board, research summaries, and ongoing training and workshops. Intake opens three times per year. To learn more, visit https://www.heartbrainworks.org/Healthy-Work-CoP