Under the Work Health and Safety Act 2011 (Cth), a Person Conducting a Business or Undertaking (PCBU) is the primary legal entity responsible for ensuring health and safety in the workplace. A PCBU can be an individual (such as a sole trader) or an organisation (such as a company, partnership, or unincorporated association) and is defined broadly to include those who conduct a business or undertaking, whether for profit or not, either alone or with others. However, individuals engaged solely as workers or officers of the business, elected members of local authorities, and volunteer associations are explicitly excluded from the definition of a PCBU.
If you own or operate a business in Australia, this page gives you the practical tools to understand and meet your obligations. We’ve included a Legal Liability Matrix, a SWMS Role Flowchart, a First Aid Audit Checklist, and a Worker Induction Template, all designed to be used immediately, not just read.
Understanding PCBUs, Officers, and Workers
Is the CEO the PCBU?
This is one of the most common points of confusion we see. The short answer: no, the CEO is not the PCBU. The PCBU is the entity, your company, partnership, trust or sole trader structure. The CEO (or any director, owner, or senior executive) is typically an Officer of that PCBU.
The distinction matters because each role carries different legal duties under the Work Health and Safety Act 2011. Officers can face personal penalties for failing to exercise due diligence — even when the business itself is also penalised. Workers carry their own set of obligations too.
PCBU Legal Liability Matrix
Use this table to identify who holds which duties in your business. Print it out. Pin it to the noticeboard. Make sure your leadership team understands where they sit.
| Role | Who Is This? | Legal Duties | Personal Liability? |
|---|---|---|---|
| PCBU (Entity) | The company, partnership, trust, or sole trader — the business itself | Primary duty of care (s.19 WHS Act): ensure health and safety of workers and others so far as is reasonably practicable. Provide safe work environment, safe plant, safe systems, training, supervision, and monitoring. A documented WHS compliance plan is how most businesses put that duty into practice. | Yes — the entity faces Category 1, 2, or 3 penalties |
| Officer (Decision Maker) | Directors, CEOs, senior executives, business owners — anyone who makes or participates in decisions affecting a substantial part of the business | Due diligence (s.27 WHS Act): acquire and keep up-to-date WHS knowledge, understand operations and hazards, ensure appropriate resources and processes exist, verify compliance. This duty cannot be delegated. | Yes — personal fines and imprisonment |
| Worker (Employee/Contractor) | Employees, contractors, subcontractors, apprentices, volunteers — anyone who carries out work for the PCBU | Take reasonable care for own health and safety (s.28), ensure acts/omissions don’t harm others, comply with reasonable PCBU instructions, cooperate with WHS policies. | Yes — workers can be prosecuted for breaching their duties |
Self-Assessment: Am I an Officer or a Worker?
Answer these three questions honestly:
- Do you make decisions (or participate in decisions) that affect the whole or a substantial part of the business? If yes, you are likely an Officer.
- Can you significantly affect the financial standing of the business? If yes, you are likely an Officer.
- Are you responsible only for implementing decisions made by others? If yes, you are likely a Worker, not an Officer.
The distinction between a worker and an officer is significant because their duties under the WHS Act differ. While workers are required to take reasonable care for their own health and safety and that of others, comply with reasonable instructions, and cooperate with workplace policies, officers have a higher level of responsibility. Officers are personally liable if they fail to exercise due diligence in ensuring the PCBU meets its WHS obligations.
✔ Next Step
If you identified as an Officer, review your company’s Directors and Officers (D&O) insurance policy. Check that ‘Officer’ duties under WHS legislation are explicitly covered. Many standard D&O policies exclude WHS — and that gap could cost you personally.
Who Is the PCBU on a SWMS? Multi-Employer Worksites
On a multi-employer worksite, every business involved is a PCBU. If you’re a subcontractor, you don’t get to rely on the Principal Contractor’s Safe Work Method Statement (SWMS) to cover your workers. Every PCBU must have their own.
However, the Principal Contractor has an overarching coordination role. They must collect, review, and coordinate all SWMS documents from every subcontractor PCBU on site.
SWMS Multi-PCBU Integration Process
Step 1: Identify the Principal Contractor — the overarching PCBU responsible for site coordination.
Step 2: Identify all subcontractors. Each one is an individual PCBU with their own duties.
Step 3: Each subcontractor PCBU drafts their own SWMS covering the high-risk construction work their workers will perform.
Step 4: The Principal Contractor reviews, collects, and signs off on all SWMS documents before work starts. They coordinate to ensure no gaps or conflicts between the different SWMS on site.
SWMS Header Template
Your SWMS document header should clearly show both parties:
| Field | Details |
|---|---|
| Principal Contractor (Overarching PCBU) | [Company name, ABN, licence number, site address, contact person, phone] |
| Subcontractor PCBU | [Your company name, ABN, licence number, trade/scope of work, contact person, phone] |
| High-Risk Work Description | [Specific high-risk construction work being performed under this SWMS] |
| Date Prepared / Reviewed | [Date] — Signed by: [Subcontractor PCBU representative] and [Principal Contractor representative] |
Common Mistake
We regularly see subcontractors assume the Principal Contractor’s SWMS covers their workers. It doesn’t. Under the WHS Act, every PCBU must have their own SWMS for high-risk construction work. If you engage contractors, make sure your independent contractor agreements clearly define WHS responsibilities. The Principal Contractor coordinates — they don’t replace your obligations.
✔ Try This Now
Pull out your current SWMS. Look at the top of the first page. Does it list both your company’s details and the Principal Contractor’s details? If not, update it before the next job starts.
PCBU Duty of Care: First Aid Kits and Medication
Under their duty of care, a PCBU must provide accessible first aid equipment, adequate facilities, and trained first aiders at all times, including on night shifts, during overtime, and when working outside the usual workplace.
One of the most common compliance gaps we see is what ends up inside the first aid kit itself. The Safe Work Australia First Aid in the Workplace Code of Practice recommends that medications — including analgesics like paracetamol and aspirin — should not be included in first aid kits because of their potential to cause adverse health effects in some individuals, including asthmatics, pregnant women, and people with certain medical conditions.
PCBU First Aid Kit Audit Checklist
Use this checklist to audit your workplace first aid kits. Do it unannounced. Do it tomorrow morning.
Kit Contents — Confirm Present:
- Adhesive dressings (various sizes)
- Heavy crepe bandages
- Sterile eye pads
- Triangular bandages
- Non-adherent wound dressings (various sizes)
- Sterile saline solution (for wound irrigation)
- Adhesive tape (hypoallergenic)
- Safety pins
- Disposable nitrile gloves (multiple pairs)
- Resuscitation face mask
- Scissors (stainless steel)
- Tweezers (stainless steel, pointed)
- Emergency thermal blanket
- Notepad and pen
- First aid instruction leaflet
Items to Remove or Relocate:
- Oral medications (paracetamol, ibuprofen, aspirin) — workers should carry their own personal medication
- Prescription medications (asthma puffers, EpiPens) — should be stored by the individual worker, not in a communal kit. Consult your first aid risk assessment before deciding whether to include non-prescription auto-injectors or relievers
- Antiseptic creams or ointments — use sterile saline and wound wipes instead to reduce the risk of allergic reactions
Compliance Checks:
- Kit is clearly labelled with a white cross on a green background
- Kit location is known to all workers
- Kit is accessible at all times (not locked away)
- Nothing is expired
- A designated first aider with current qualifications is available during all shifts
- First aid incident register is present and up to date
✔ Medication Dispensation Policy — Key Principle
Your workplace medication policy should make clear that workers requiring prescribed or over-the-counter medications are responsible for carrying their own personal supply. The PCBU should encourage (but cannot compel) workers to disclose any allergies or medical conditions that might require emergency first aid. If a PCBU decides to make non-prescription asthma relievers or auto-injectors available, first aiders must be suitably trained to administer them and this decision should be documented in your first aid risk assessment.
What Are the 4 Key Principles of WHS Duty of Care?
The WHS Act establishes four interconnected principles that form the foundation of workplace health and safety in Australia. Every PCBU, officer, and worker should understand these — and more importantly, know what they look like in daily practice.
| Principle | What It Means | What It Looks Like |
|---|---|---|
| 1. Primary Duty of Care (PCBU) | The PCBU must ensure health and safety of workers and others, so far as is reasonably practicable | Safe work environment, safe plant and structures, adequate training, monitoring of conditions, provision of facilities |
| 2. Duty of Officers (Due Diligence) | Officers must proactively verify the PCBU is meeting its obligations — not just assume it’s being done | Attending WHS meetings, reviewing incident data, allocating resources, keeping WHS knowledge current, verifying compliance systems |
| 3. Duty of Workers (Compliance) | Workers must take reasonable care of themselves and others, follow instructions, and cooperate with WHS policies | Wearing PPE, reporting hazards, following safe work procedures, not bypassing safety controls |
| 4. Duty to Consult | PCBUs must consult with workers on WHS matters that affect them, consider their views, and advise them of outcomes | Toolbox talks, WHS committees, consulting before changing procedures, sharing risk assessment outcomes with the team |
5 Unsafe Acts and How the 4 Principles Apply
Theory is one thing. Here’s how these four principles play out in real workplace situations:
| Unsafe Act | PCBU Duty | Officer Duty | Worker Duty | Consultation |
|---|---|---|---|---|
| Bypassing a machine safety guard | Provide properly maintained guards; ensure safe systems | Verify production targets don’t incentivise unsafe shortcuts | Must not remove or bypass safety controls | Consult workers on realistic production timelines |
| Working at heights without a harness | Provide fall prevention equipment and training | Ensure budget allocation for PPE; review fall data | Must use PPE provided; report defective equipment | Discuss fall risks at toolbox talks before elevated work |
| Using faulty electrical equipment | Maintain and test equipment; implement tag-and-test schedules | Ensure maintenance budgets are adequate and monitored | Report faulty equipment immediately; don’t use defective tools | Involve workers in equipment reporting and tag-out procedures |
| Manual handling without training | Provide manual handling training; assess manual task risks | Verify training records are current; ensure induction covers it | Follow trained procedures; request refresher if unsure | Consult workers on which tasks cause pain before redesigning |
| Ignoring psychosocial hazards | Identify and control psychosocial risks; implement reporting | Ensure psychosocial hazard controls exist; review complaints | Report bullying; cooperate with investigations | Consult workers on workload and culture through regular check-ins |
Implementation Scripts for Toolbox Talks
Site managers can use these scripts at your next toolbox talk to address each principle directly with your team.
Script 1 — Primary Duty of Care: “Our business has a legal duty to make sure you can do your work safely. That means we provide the right equipment, the right training, and the right environment. If something isn’t right — a broken tool, a blocked exit, an unsafe process — it’s our responsibility to fix it. But we can only fix what we know about. Report it.”
Script 2 — Officer Due Diligence: “The directors and senior managers of this business have a personal legal duty to make sure safety isn’t just a policy on paper. That’s why [name] reviews incident reports monthly, attends these toolbox talks, and signs off on risk assessments. This isn’t optional for them — it’s the law.”
Script 3 — Worker Duties: “Every one of you has a legal duty too. Take reasonable care of yourself and the people around you. Wear your PPE. Follow the procedures. If you see someone doing something unsafe, say something — because the law says your actions can’t put others at risk.”
Script 4 — Duty to Consult: “We’re legally required to consult with you on safety matters that affect your work. That’s not a formality — it means we need your input before we change procedures, introduce new equipment, or assess new risks. If you’ve got concerns, this is the time. Your feedback isn’t optional — it’s part of how we stay compliant.”
Script 5 — Bringing It All Together: “Safety at this workplace isn’t one person’s job. The business provides the systems and resources. Management verifies they’re working. You follow the procedures and speak up when something’s wrong. And we all consult with each other to make it better. That’s how the WHS Act works — shared responsibility, at every level.”
✔ Implementation Timeline
- Week 1: Add the 4 WHS principles to your company handbook or WHS policy document.
- Week 2: Hold your first mandatory monthly toolbox talk using the scripts above. Document it with attendee sign-off.
What Are the Responsibilities of an Employee/Worker?
Workers aren’t passive participants in workplace safety. Under Section 28 of the WHS Act, every worker must:
- Take reasonable care for their own health and safety
- Ensure their acts or omissions don’t adversely affect the health and safety of others
- Comply, so far as reasonably able, with any reasonable instruction given by the PCBU
- Cooperate with any reasonable WHS policy or procedure that has been communicated to them
Workers are encouraged to understand their duties under the WHS Act and ensure compliance with their obligations. This includes adhering to workplace safety policies, reporting hazards, and participating in safety training and consultations.
Workers can be personally prosecuted for failing to meet these duties. It’s not just management that carries the legal risk. Serious or repeated WHS breaches can also result in termination without warning.
New Worker WHS Induction Sign-Off Sheet
Use this template as part of your standard onboarding process. Have every new worker read, understand, and sign it before they start work. Then add it to their HR file.
Worker WHS Responsibility Acknowledgement
I, _________________________ (Worker Name), acknowledge that I have read and understood the following workplace health and safety responsibilities:
- I will take reasonable care for my own health and safety at all times while at work.
- I will ensure my actions and omissions do not adversely affect the health and safety of others.
- I will comply with all reasonable instructions given by my employer relating to workplace health and safety.
- I will cooperate with all workplace health and safety policies and procedures.
- I will wear all required personal protective equipment (PPE) as directed.
- I will report all hazards, incidents, near-misses, and injuries to my supervisor immediately.
- I will not operate plant, equipment, or machinery I have not been trained and authorised to use.
- I will not attend work under the influence of drugs or alcohol that may impair my ability to work safely.
- I will participate in all required WHS training, toolbox talks, and emergency drills.
- I understand that I can be personally prosecuted for failing to meet my duties under the Work Health and Safety Act 2011.
Signature: _________________________ Date: ___ / ___ / ______
Witness (Supervisor): _________________________ Date: ___ / ___ / ______
Induction Conducted By: _________________________
✔ Immediate Action Items
- Download and adapt this Worker Induction Sign-Off Sheet for your business.
- Attach it to your standard HR onboarding package from today.
- At your next safety meeting, have all existing staff review and sign it.
Success Metric: 100% of staff have a signed WHS responsibility acknowledgement form in their HR file.
Need Help Getting Your PCBU Obligations Right?
Understanding your duties as a PCBU is one thing. Implementing them properly across your business — with the right policies, training systems, and documentation — is another.
At Fair Workplace Solutions, we help Australian businesses build WHS compliance systems that actually work. We provide PCBU obligation consultations, tailored WHS compliance plans, and WHS handbooks drafted specifically for your industry and workforce. No templates. No generic advice. Just clear, practical guidance that keeps your business compliant and your workers safe.
Contact us for a confidential discussion about your WHS compliance obligations.
Disclaimer: This article provides general information about PCBU duties and responsibilities under Australian WHS law. It is not legal advice. The WHS legislation is applied by state and territory regulators, and specific obligations may vary depending on your jurisdiction. For advice tailored to your business, contact a qualified WHS lawyer at Fair Workplace Solutions or your state WHS regulator.