Psychosocial hazards are aspects of how work is designed, organized and managed, such as excessive workload, harassment or isolation, that can harm workers' mental and physical health.

Psychosocial hazards are features of work design, organization, management and social environment that can cause psychological or physical harm. Examples include high job demands, low control over work, poor support, unclear roles, bullying, harassment, workplace violence, remote or isolated work, fatigue from long hours and poorly managed change. Prolonged exposure can lead to stress, anxiety, depression, burnout, musculoskeletal disorders and cardiovascular disease, and it can increase the risk of errors and incidents.
ISO 45003, published in 2021, gives guidance on managing psychosocial risk within an ISO 45001 management system. Some jurisdictions, including Australia, now set explicit legal duties to manage psychosocial hazards like any other workplace hazard.
A utility's field technicians report rising stress after dispatch targets are increased and travel times aren't adjusted. A risk assessment finds excessive workload and time pressure, so the company revises scheduling targets, adds check-in support for lone workers and monitors overtime and fatigue.
For a deeper guide, see SafetyIQ's article on psychosocial hazard management and ISO 45003.
The hazard is the source of potential harm, such as excessive workload. The risk is the likelihood and severity of harm from exposure to it.
No. ISO 45003 is a guidance document. Organizations certify to ISO 45001 and use ISO 45003 to strengthen how they manage psychological health.
Both. They require HR involvement, but because they come from how work is designed and managed, they belong in the safety management system alongside physical hazards.
Part of SafetyIQ's EHS glossary: plain-English definitions of workplace health and safety terms.
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