The invisible injury: How secondary psychological conditions develop, why they are often missed and what they cost

Sharn Meneilly, Head of Mental Health Services

This is the second post in a nine blog series where Navigator Group will set out what we believe the current evidence tells us about psychosocial risk, recovery and workers' compensation, and where the open questions still are.

When a worker is injured at work, the injury has a mechanism such as a fall, a strain or an acute incident, and a physical consequence that the compensation system can recognise and respond to. The claim is lodged, treatment begins and the administrative process activates around the presenting condition.

What is considerably less visible, and far less often the subject of structured clinical response, is what develops next.

For a significant proportion of injured workers, the experience of being within the compensation system generates psychological conditions that were not present at the time of injury. These are not fabricated, nor are they exaggerated responses to a benign administrative process. They are the predictable consequence of placing a person who is often already in pain, financially stressed and uncertain about their employment future into an environment that is opaque, adversarial and heavily weighted toward institutional interests.

This is what is referred to as secondary psychological injury. Understanding how it develops is foundational to understanding why outcomes in the current system are so frequently worse than they need to be.

How it develops

Secondary psychological conditions in workers' compensation accumulate rather than emerge suddenly. The process typically begins early in a claim, when a gap opens between what a worker expects, such as reasonable support, clear information and good faith engagement, and what the system delivers. That gap generates a stress response. When it goes unaddressed, the stress compounds.

The biopsychosocial framework underpinning the It Pays to Care guide identifies the mechanisms with reasonable precision. Passive coping styles, poor self-efficacy, workplace conflict, financial stress and disrupted social connection are among the psychosocial factors that, when unaddressed, predict poor recovery. These factors do not require a formal psychiatric diagnosis. They are common, measurable and, when identified early, responsive to intervention.

The Workers' Voice research confirms that system processes are themselves a contributing factor. Workers report not understanding what is expected of them, receiving claim decisions without clear explanation and having their treating doctor's clinical opinion routinely challenged or set aside in favour of third-party assessments. Each of these experiences represents an additional psychosocial stressor layered on top of an existing injury.

Why it is often missed

Secondary psychological injury is frequently not identified for reasons that are structural rather than individual.

The first is timing. Standard claims processes are not designed to detect emerging psychological distress. Screening, when it occurs, tends to happen reactively, after distress symptoms are already visible, rather than systematically and early. By the time secondary symptoms are apparent, they are often entrenched.

The second is categorisation. Workers' compensation systems were built primarily around physical injury. Mental health conditions are typically managed through different processes, with higher evidentiary thresholds, longer decision timelines and less clearly defined treatment pathways. Workers with secondary psychological conditions are navigating a system that has not, historically, known how to categorise or respond to their presentation.

The third is attribution. Because secondary psychological conditions develop in response to the claims process rather than the original injury, they may not be identified as work-related at all. A worker who develops anxiety over the course of a disputed claim is experiencing a genuine measurable harm that may not be recorded as such, and it may not trigger the clinical response it warrants.

What it costs

The cost of secondary psychological injury is not a peripheral consideration. It is a primary driver of poor outcomes across the system.

The It Pays to Care guide cites consistent evidence that psychosocial barriers are among the leading contributors to prolonged disability and delayed return to work. Organisations that implement full, evidence-based psychosocial matched care, a model designed fundamentally around prevention, achieve claim duration reductions in the range of 30 to 50 per cent, alongside meaningful reductions in medical costs and wage replacement expenditure.

Workers who develop secondary psychological conditions have longer claims, higher medical utilisation and worse functional outcomes at claim closure. The cost is distributed across schemes, insurers and employers, but it falls most heavily on the workers themselves, whose recovery is compromised and whose experience of the system has added harm to injury.

The evidence for prevention is available. The more important question is what it takes to act on it consistently and at scale.

Source Materials:

• Workers' Voice Solutions Series (Monash University, October 2025)

• It Pays to Care: Early Systematic Psychosocial Matched Care - A Best Practice Guide (Wyatt, Garton, Nicholas & Iles, May 2025).