A sole trader conducting a business or undertaking is a person conducting a business or undertaking under the Work Health and Safety Act 2011. This means the sole trader holds exactly the same primary duty of care under section 19 as a corporation employing thousands of workers. The scale of the business does not reduce the scope of the duty. A sole trader must ensure, so far as is reasonably practicable, the health and safety of workers and other persons who may be affected by the work. The WHS Regulation 2025 applies in full to sole traders, including obligations around risk assessment, SWMS for high-risk construction work, workplace exposure monitoring, and psychosocial hazard management. The critical difference is that penalties are assessed at individual rates rather than corporate rates, though these can still be financially devastating for a small business operator.
s.5 WHS Act 2011
PCBU Definition
s.19 WHS Act 2011
Primary Duty
$300,000 + 5 years imprisonment
Category 1 Max (Individual)
$150,000
Category 2 Max (Individual)
1 July 2026
Section 26A Commencement
1 December 2026
WEL Transition Date
The WHS Act 2011 defines a PCBU as a person conducting a business or undertaking, whether or not the business is conducted for profit and whether or not the business employs anyone. A sole trader who engages subcontractors, apprentices, or labour hire workers is a PCBU with duties to those workers. A sole trader who works alone is still a PCBU with duties to other persons who may be affected by the work, including members of the public, neighbouring businesses, and visitors. The sole trader cannot argue that the small size of the operation makes compliance impracticable. The concept of reasonably practicable under section 18 considers the likelihood of the hazard occurring, the degree of harm, what the person knew or ought reasonably to have known, the availability of ways to eliminate or minimise the risk, and the cost of those measures. For a sole trader, the cost consideration is assessed relative to the scale of the business, but this does not eliminate the duty. A sole trader performing high-risk construction work must prepare and implement SWMS just as a principal contractor would.
Regulators apply the WHS Act 2011 without regard to business size. A sole trader electrician performing electrical work at heights must comply with the same SWMS requirements, hold the same licences, and implement the same fall protection controls as a large electrical contracting firm. The sole trader plumber working with lead or asbestos-containing materials must comply with the same workplace exposure monitoring requirements and health surveillance obligations under the WHS Regulation 2025. When the new workplace exposure limits take effect on 1 December 2026, sole traders in trades involving chemical exposure must transition to the new WEL values and may need to invest in upgraded extraction equipment or respiratory protection. Section 26A binding codes of practice, commencing 1 July 2026, apply equally to sole traders. A sole trader who departs from a binding code must maintain documentation demonstrating that the alternative approach provides an equivalent or higher level of safety. The practical implication is that sole traders must maintain a basic but functional safety management system including risk assessments, SWMS where required, training records, and incident reports.
While sole traders are assessed at individual penalty rates rather than corporate rates, the financial impact can be more severe in relative terms. The maximum penalty for an individual under a category 2 offence is $150,000 under the WHS Act 2011, with higher maximums under the WHS Regulation 2025 for specific breaches. A category 1 offence involving reckless conduct carries a maximum penalty of $300,000 and five years imprisonment for an individual. These penalties can exceed the total asset value of a sole trader's business, effectively resulting in bankruptcy. Enforceable undertakings, which require the PCBU to invest in safety improvements and community programs, can impose costs exceeding the penalty amount over a three-to-five-year period. Sole traders should also be aware that their personal assets are not protected by corporate structures, meaning a WHS penalty or civil damages award can attach to their home, vehicle, and personal savings. Adequate public liability and professional indemnity insurance is essential, though insurance cannot cover criminal fines or imprisonment.
The most common compliance failures among sole traders are the absence of any documented risk assessment, failure to prepare SWMS for high-risk construction work, operating without required licences or registrations, and failure to report notifiable incidents. Many sole traders assume that WHS laws only apply to employers with employees, which is incorrect. A sole trader working as a subcontractor on a construction site must provide their own SWMS to the principal contractor before commencing high-risk construction work. They must also comply with the principal contractor's site rules and WHS management plan. Sole traders who engage other subcontractors take on PCBU duties towards those subcontractors. Practical compliance steps include maintaining a simple risk register covering the hazards of each type of work performed, preparing template SWMS for recurring high-risk tasks, keeping training and licence records current, carrying appropriate first aid equipment, and maintaining an incident register. These records should be retained for at least five years and be available for inspection by a WHS regulator at any time.
EHS Atlas provides affordable WHS management tools designed for sole traders, including SWMS templates, risk registers, and incident reporting that meet WHS Regulation 2025 requirements.
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