Persistent Traumatic Stress Exposure: Rethinking PTSD for Frontline Workers

Background: Frontline workers across health, emergency, and social care sectors are repeatedly exposed to distressing events and chronic stressors as part of their occupational roles. Unlike single-event trauma, these cumulative exposures can lead to enduring psychological and physiological strain. Traditional diagnostic frameworks, particularly post-traumatic stress disorder (PTSD), were never designed to capture the persistent and layered nature of such occupational trauma. Objective: This commentary introduces the concept of Persistent Traumatic Stress Exposure (PTSE), a framework that reconceptualises trauma among frontline workers as an occupational exposure rather than an individual disorder. It aims to reorient understanding, responsibility, and intervention from a purely clinical lens toward systemic, cultural, and organisational domains. Method: Drawing on contemporary evidence and theoretical models of trauma, including organisational and moral injury frameworks, PTSE is presented as an integrative paradigm. It synthesises findings from health, emergency, and social care settings to illustrate how repeated exposure, moral dissonance, and institutional pressures contribute to cumulative psychological harm. Results: The PTSE framework highlights that psychological injury may accrue across shifts, careers, and lifetimes, calling for embedded, preventive, and real-time supports that protect mental health as proactively as physical safety. It shifts the focus from vulnerability to exposure, emphasising that trauma prevention and recovery require organisational accountability and trauma-informed systems. Conclusions: PTSE challenges prevailing stigma by framing trauma as a predictable occupational hazard rather than a personal weakness. It offers a more humane and contextually accurate paradigm that aligns with modern occupational health perspectives, informing practice, policy, and culture. In doing so, it honours the lived realities of those who serve on the frontline and advocates for sustained, systemic investment in psychological safety and resilience.