Between us, we've done more night shifts than we can count. Abbie as a paramedic on rotating rosters. Charlie as a police officer working response shifts across all hours. We know what it's like to drive home at 7am with your eyes barely open. We know what it's like to make critical decisions at 3am on your fifth consecutive night. We know what sustained shift work does to your body, your relationships, and your capacity to function safely.
Shift work and irregular hours are recognised psychosocial hazards under Australian WHS frameworks. They also interact with and amplify other psychosocial hazards, high job demands, low support, poor work-life balance, in ways that are well established in occupational health research but poorly managed in most workplaces.
Why shift work is a psychosocial hazard
The hazard isn't the shift itself. It's what sustained or poorly designed shift work does to the worker.
Sleep disruption is the most direct pathway to harm. Night shifts and rotating rosters interfere with circadian rhythms, the body's internal clock that regulates sleep, alertness, metabolism, and mood. Workers on rotating shifts accumulate a sleep debt that cannot be repaid by a single recovery day. Research published in the Scandinavian Journal of Work, Environment and Health has found elevated rates of cardiovascular disease, anxiety, and sleep disruption among long-term shift workers, with growing evidence of links to depression.
But the psychosocial impact goes beyond sleep. Shift work affects:
• Cognitive function. Fatigue reduces attention, reaction time, and decision-making quality. In paramedicine and policing, this has obvious safety implications. In any workplace, it increases the risk of errors, poor judgement, and workplace incidents.
• Social and family relationships. Workers on rotating or irregular shifts miss family meals, school events, weekends, and the rhythms of ordinary social life. Over time, this erodes the support networks that buffer against other workplace stressors.
• Access to support. Workers on night shifts or weekend shifts often have less access to supervisors, training, HR support, and peer networks. Problems that would be quickly addressed during business hours can go unmanaged for days.
• Recovery between shifts. If the gap between shifts is too short, particularly between an evening and a morning shift, workers arrive at work already fatigued. The Psychosocial Regulations 2025 require employers to consider whether work schedules provide adequate recovery time.
What we saw in emergency services
In both policing and paramedicine, shift work was treated as non-negotiable. The community needs emergency services around the clock, so the workforce rotates. That's not going to change.
But what can change, and what we saw the sector slowly start to address, is how shifts are designed and how the cumulative impact is managed.
Abbie: As a paramedic, the standard 10 hour standdown in between shifts was not always possible. Seven hours between shifts sounds like enough until you factor in the drive home, winding down, eating, sleeping, and getting back. In practice, you were getting four or five hours of broken sleep and arriving at your next shift impaired. Everybody knew this was a problem.
Charlie: In policing, the fatigue issue intersected with everything else. You're making decisions that affect people's lives, whether to arrest, whether to use force, how to manage a volatile scene and you're doing it at the point in your circadian cycle where your cognitive function is at its lowest. The culture was that you just pushed through. But 'pushing through' at 3am isn't resilience. It's a risk factor for the officer, the public, and the organisation.
What employers in other industries should be doing
Shift work isn't exclusive to emergency services. Healthcare, aged care, manufacturing, transport, hospitality, mining, retail, corrections, and security all involve shift work. Many of these industries have the same structural problems we saw in policing and paramedicine, but less awareness that shift design is a psychosocial risk management issue.
If your workers do shift work, you should be asking:
• Is the roster designed to minimise circadian disruption? Forward-rotating shifts (morning → afternoon → night) are better tolerated than backward rotation.
• Are there adequate rest periods between shifts? The minimum gap should allow for travel, winding down, a full sleep cycle, and preparation for the next shift.
• Are night shift and weekend workers getting the same access to supervision, support, and resources as day shift workers?
• Are you monitoring fatigue as a leading indicator of risk, rather than waiting for an incident to occur?
• Have you consulted workers about the roster? Workers who have input into their schedules report lower psychological distress than those who have no control over when they work.
• Are you considering the cumulative impact of shift work over months and years, not just managing it shift by shift?
Fatigue is not a personal failing
One of the most damaging aspects of 'toughen up' culture in emergency services, and we've written about this elsewhere, is the belief that fatigue is something individuals should manage through willpower, caffeine, and silence.
Fatigue is a physiological state caused by work conditions. It is predictable, measurable, and controllable at the organisational level. An employer who rosters workers in a way that produces chronic fatigue and then blames the worker for being tired has fundamentally misunderstood their obligations under OHS law.
Emergency services have been confronting this reality through coronial inquiries, parliamentary investigations, and workers' compensation data that makes the link between shift design and harm impossible to ignore. Other industries have the opportunity to learn from this without waiting for the same consequences.
Clear Boundaries helps employers identify and manage psychosocial hazards including shift work and fatigue. Book a free consultation to discuss how your rosters and work schedules are managing psychosocial risk.