How do the HVNL Primary Duty and WHS laws interact?
Short answer
The HVNL Primary Duty and work health and safety laws operate alongside each other: one focuses on public risk from heavy-vehicle transport activities and the other on health and safety at work.
Plain English
The HVNL Primary Duty under section 26C requires each Chain of Responsibility party to ensure, so far as is reasonably practicable, the safety of its transport activities. Its focus is public risk created by heavy-vehicle transport activities.
Work health and safety laws separately protect workers and other people at workplaces. The duties can overlap—for example, unsafe loading or fatigue planning may create both transport and workplace risks—but compliance with one law does not automatically establish compliance with the other.
What this means operationally
Use one coordinated risk process where practical: identify both public and workplace risks, consult affected duty holders and workers, allocate controls, and keep evidence that the controls operate. Check the specific work health and safety or occupational health and safety law in each jurisdiction as well as the HVNL requirements for the transport activity.
Who it applies to
Chain of Responsibility parties and persons conducting a business or undertaking, employers, officers, workers and other duty holders whose activities involve heavy-vehicle transport.
Example
A warehouse operator manages pedestrian separation under workplace safety law while also controlling loading, mass distribution, scheduling and departure practices under the HVNL Primary Duty.
Exceptions and traps
The laws cover different risks and may apply to different duty holders. Victoria uses occupational health and safety legislation rather than the model WHS Act, and every jurisdiction applies its own enacted law. The HVNL does not govern domestic heavy-vehicle operations in Western Australia or the Northern Territory.
What changed
The current risk-based HVNL Primary Duty commenced on 1 October 2018. The 1 August 2026 HVNL reforms did not merge the HVNL with workplace safety law; the two duty frameworks continue to operate alongside each other.
Previous rule
Before 1 October 2018, Chain of Responsibility obligations relied more heavily on prescriptive duties and deemed liability. Work health and safety or occupational health and safety duties still applied separately.
Legal foundation
Heavy Vehicle National Law s 26C; applicable state, territory or Commonwealth work health and safety or occupational health and safety legislation
Sources & primary documents
- www.legislation.qld.gov.au/view/whole/html/inforce/current/act-2012-hvnlq
- www.nhvr.gov.au/safety-accreditation-compliance/chain-of-responsibility/regulatory-advice/whs-and-cor
- www.safeworkaustralia.gov.au/law-and-regulation/model-whs-laws
WWTG verification: Queensland legislation, NHVR, Safe Work Australia
Frequently asked questions
Does WHS compliance prove HVNL compliance?
No. The duties overlap, but each law has its own scope and requirements.
Can both laws apply to the same event?
Yes. A loading, fatigue or vehicle-safety failure can create both public transport risk and workplace risk.
What is the main difference between the duties?
The HVNL Primary Duty focuses on public risk from heavy-vehicle transport activities, while workplace safety law protects workers and other people at workplaces.
Should a business operate two completely separate safety systems?
Not necessarily. An integrated system can be effective if it clearly addresses the distinct duties and risks under both laws.
Who enforces the laws?
The NHVR, police and relevant transport agencies enforce the HVNL, while the applicable state, territory or Commonwealth workplace safety regulator enforces workplace safety law.