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Who must comply with PCBU primary duty of care (ACT WHS Act s 19)?

The applicability test for PCBU primary duty of care (ACT WHS Act s 19) (WorkSafe ACT), computed across 35 industries, 9 business structures and 6 size bands.

Short answer: Every business

Every business is a PCBU — the primary duty of care applies whether or not you employ anyone.

What the obligation is

the ACT PCBUs must, so far as is reasonably practicable, ensure the health and safety of workers and others affected by the work.

Section 19 of the Work Health and Safety Act 2011 (ACT) imposes the primary duty of care on every person conducting a business or undertaking (PCBU) in the ACT: so far as is reasonably practicable, a safe work environment, safe plant and structures, safe systems of work, safe use and storage of substances, adequate facilities, information, training and supervision, and monitoring of workers' health and workplace conditions. "Health" includes psychological health. Officers must exercise due diligence (s 27). The Work Health and Safety Act 2011 (ACT) follows the model WHS Act, so the duty is the same as in the other model-law jurisdictions; the penalties and the industrial manslaughter offence are set locally. WorkSafe ACT administers the duty. In the ACT the list of incidents a PCBU must report is wider than the original model: since 9 June 2023 every workplace sexual assault incident, including a suspected incident, is notifiable, alongside deaths, serious injuries or illnesses and dangerous incidents. Infections to which carrying out work significantly contributed (for example from work with micro-organisms, care of people, or contact with blood, body substances or animals) and occupational zoonoses such as Q fever, anthrax, leptospirosis, brucellosis, Hendra virus, avian influenza and psittacosis must also be notified.

The applicability test

Every business is a PCBU — the primary duty of care applies whether or not you employ anyone.

How the regulator frames it: Every PCBU operating in the ACT, including sole traders and businesses with no employees, plus officers and workers. In the ACT, where a notifiable incident arises from more than one business or undertaking, each of those businesses must notify WorkSafe ACT; people who experience or witness a workplace sexual assault have no duty to report it.

What triggers it: Conducting a business or undertaking in the jurisdiction (whether or not you employ anyone).

Jurisdiction: Australian Capital Territory law only. A business with no operations in ACT is outside it, whatever the rest of the test says.

Which industries are in or out

Outcome across the 35 industries Rules Mate maps (35 of 35: yes).

The answer is the same in every industry: yes. Industry does not change who must comply.

Business structure and size

Structure does not change the answer across all industries: for every structure the answer is "yes".

Size does not change the answer across all industries: at every size band the answer is "yes".

Worked examples

Each line is one run of the Rules Mate applicability engine for a single business profile, with the reason the engine gives:

  • Pty Ltd company in real estate agents with 6–19 employees, turnover $1M–$3M: applies. Every business is a PCBU — the primary duty of care applies whether or not you employ anyone.

What you must do, and when

When due
Continuous. Review risk controls whenever work, plant or the workplace changes, and after any notifiable incident. Notify WorkSafe ACT as soon as you become aware of a notifiable incident, by the fastest possible means; if you notify by telephone and WorkSafe ACT asks for written notice, provide it within 48 hours of the request. Keep the incident site undisturbed until an inspector arrives or directs otherwise.
Frequency
Ongoing
Evidence to keep
WHS risk register and control plan (including psychosocial hazards); safe work procedures; induction, training and supervision records; consultation records with workers; incident and hazard reports; officer due-diligence records (board WHS reporting). Record of each notifiable incident (including any workplace sexual assault incident), kept for at least five years.
Status
Current
Priority
Critical

Penalty for not complying

Maximum penalty: Category 1 offence (reckless or grossly negligent conduct exposing a person to risk of death or serious injury): up to $12,321,000 (body corporate), $2,464,000 (PCBU or officer as an individual) or $1,232,000 (other individual), per Safe Work Australia's comparison table as at 1 August 2026 (the ACT applies the model Act's indexed amounts for 2026-27). A death caused by a reckless or negligent breach is separately punishable as industrial manslaughter (see industrial-manslaughter-act).

Criminal liability

Breaches can be prosecuted as criminal offences, not only civil contraventions.

Audit or assurance level

Rules Mate has not yet classified the audit or assurance level for this obligation. Any audit, review or certification requirement is set by the regulator source listed below.

Obligations with the same applicability test

Where it sits in the corpus

Rules Mate tracks 28 published obligations tagged "whs", 23 of them rated critical. For a professional services Pty Ltd company with 6–19 employees operating in every state, 16 of those apply outright. This obligation is rated critical priority and carries criminal liability, and is an ongoing duty.

Regulator, legislation and tools

Regulated by WorkSafe ACT.

WorkSafe ACT: ACT WHS regulator. Also administers portable long service leave schemes including the 2026 expansion to hospitality and beauty.

Free tools that help with this obligation:

Questions

Who must comply with PCBU primary duty of care (ACT WHS Act s 19)?
Every business is a PCBU — the primary duty of care applies whether or not you employ anyone.
Does PCBU primary duty of care (ACT WHS Act s 19) apply to sole traders?
Yes. Across every industry and every size band, the engine's answer for a sole trader is: yes.
Does PCBU primary duty of care (ACT WHS Act s 19) apply to businesses with 1–5 employees?
Yes (1–5 employees, turnover $100K–$1M).
When is "PCBU primary duty of care (ACT WHS Act s 19)" due?
Continuous. Review risk controls whenever work, plant or the workplace changes, and after any notifiable incident. Notify WorkSafe ACT as soon as you become aware of a notifiable incident, by the fastest possible means; if you notify by telephone and WorkSafe ACT asks for written notice, provide it within 48 hours of the request. Keep the incident site undisturbed until an inspector arrives or directs otherwise.

Related

Sources

Computed by the Rules Mate applicability engine from the published obligation corpus; facts last checked 3 October 2026. Rules Mate is not a law firm and this is general information, not legal advice. Confirm your position with the regulator source or a qualified adviser before acting.