The obligation
PCBUs must assess risks from hazardous chemicals and apply the hierarchy of controls to eliminate or minimise exposure.
PCBUs must assess the risks associated with identified hazardous chemicals, considering the nature of the hazard, potential exposure routes, and consequences. Controls must be applied in line with the hierarchy: elimination, substitution, isolation, engineering controls, administrative controls, and PPE (last resort). Control measures must be reviewed when circumstances change. The Code provides detailed guidance on each control tier, including ventilation, containment, and safe work procedures.
- What
- PCBUs must assess risks from hazardous chemicals and apply the hierarchy of controls to eliminate or minimise exposure.
- Source
- worksafe.wa.gov.au
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risk assessment
hierarchy of controls
exposure
PPE
Official sources
Frequently asked questions
Which WHS law does this come from?
Risk assessment and hierarchy of control for hazardous chemicals is a WHS requirement set out in Managing risks of hazardous chemicals in the workplace (WA). It is made under Work Health and Safety Act 2020 (WA). The relevant provision is WHS Act 2020 (WA) > WHS (General) Regulations 2022 > Code of Practice > Section 3-4.
What does this WHS obligation require?
Risk assessment and hierarchy of control for hazardous chemicals is a WHS obligation under Managing risks of hazardous chemicals in the workplace (WA). In short, PCBUs must assess risks from hazardous chemicals and apply the hierarchy of controls to eliminate or minimise exposure.
What changed recently?
Risk assessment and hierarchy of control for hazardous chemicals was last updated on 27 August 2026.
