The obligation
PCBUs must select and apply controls using the hierarchy: eliminate, substitute, isolate, engineering, administrative, PPE — in order of effectiveness.
The Code mandates that PCBUs work through the hierarchy of controls when eliminating or minimising risks: (1) eliminate the hazard; if not reasonably practicable, (2) substitute, (3) isolate, (4) apply engineering controls, (5) apply administrative controls, (6) use personal protective equipment. Higher-order controls are preferred. PCBUs must not rely on lower-order controls (administrative or PPE) alone when higher-order controls are reasonably practicable.
- What
- PCBUs must select and apply controls using the hierarchy: eliminate, substitute, isolate, engineering, administrative, PPE — in order of effectiveness.
- Source
- worksafe.nt.gov.au
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hierarchy of controls
eliminate
PPE
engineering controls
PCBU
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Frequently asked questions
Which WHS law does this come from?
Hierarchy of Controls — Implementing Risk Controls is a WHS requirement set out in How to manage work health and safety risks (NT). It is made under Work Health and Safety (National Uniform Legislation) Act 2011 (NT). The relevant provision is NT > Codes of Practice > WHS Risk Management > Hierarchy of Controls.
What does this WHS obligation require?
Hierarchy of Controls — Implementing Risk Controls is a WHS obligation under How to manage work health and safety risks (NT). In short, PCBUs must select and apply controls using the hierarchy: eliminate, substitute, isolate, engineering, administrative, PPE — in order of effectiveness.
What changed recently?
Hierarchy of Controls — Implementing Risk Controls was last updated on 26 August 2026.
