Work Health and Safety Act 2011 (NSW)

The Work Health and Safety Act 2011 (NSW) is the main work health and safety statute for New South Wales. Its long title says it is an Act to secure the health, safety and welfare of persons at work, to repeal the Occupational Health and Safety Act 2000, and for other purposes.

The object of the Act is set out in section 3. It is designed to provide a balanced and nationally consistent framework to secure the health and safety of workers and workplaces. The Act does this by protecting workers and other persons against harm through the elimination or minimisation of risks arising from work or from specified types of substances or plant. It also provides for workplace representation, consultation, co-operation and issue resolution, promotes advice, information, education and training, secures compliance through enforcement measures, and supports continuous improvement and national harmonisation.

Section 3 also states an important principle for reading the Act. Workers and other persons should be given the highest level of protection against harm to their health, safety and welfare from hazards and risks arising from work or from specified types of substances or plant, so far as is reasonably practicable. For businesses, that means the Act is not just about responding after an incident. It is built around active risk management and practical systems that match the work being done.

The Act uses specific statutory definitions that matter in practice. The key ones for most businesses are person conducting a business or undertaking, worker and workplace.

Section 5 says a person conducts a business or undertaking whether the person conducts it alone or with others, and whether or not it is conducted for profit or gain. A business or undertaking conducted by a person includes one conducted by a partnership or an unincorporated association. If the business or undertaking is conducted by a partnership other than an incorporated partnership, references to the person conducting the business or undertaking are read as references to each partner in the partnership.

Section 5 also sets out who is usually outside the PCBU definition. A person does not conduct a business or undertaking to the extent the person is engaged solely as a worker in, or as an officer of, that business or undertaking. An elected member of a local authority does not in that capacity conduct a business or undertaking. A volunteer association does not conduct a business or undertaking for the purposes of the Act, provided it is a group of volunteers working together for one or more community purposes and none of the volunteers, whether alone or jointly with any other volunteers, employs any person to carry out work for the volunteer association.

Section 7 defines worker broadly. The extract shows that a worker is a person who carries out work in any capacity for a PCBU, including as an employee, contractor, subcontractor, employee of a contractor or subcontractor, employee of a labour hire company assigned to work in the business or undertaking, apprentice, trainee, student gaining work experience or volunteer. This broad definition is one reason businesses should be cautious about assuming WHS duties only apply to payroll employees.

Section 8 contains the definition of workplace. Even without reproducing the full wording here, the practical point is that a workplace is not limited to a fixed office, shop or factory. If work is carried out at a place, that place may be a workplace for the purposes of the Act.

Section 4 also matters. It defines health to mean physical and psychological health. Businesses should therefore read the Act's health and safety framework broadly rather than limiting it to obvious physical injury risks only.

Part 2 starts with principles that apply to duties. These are important because they explain how the duty framework works in real business arrangements.

Section 14 states that duties are not transferable. This is a key point for contracts, outsourcing and shared sites. A business can allocate tasks by agreement, but it cannot sign away a statutory duty imposed by the Act.

Section 15 states that a person may have more than one duty. Section 16 states that more than one person can have a duty. Together, these provisions make clear that WHS responsibility can overlap. A business may owe one duty as a PCBU, another because it manages or controls a workplace, and another because it manages or controls plant or fixtures. Another business on the same site may also owe duties at the same time.

Section 17 deals with management of risks, and section 18 explains what reasonably practicable means in ensuring health and safety. The Act's object and structure show that businesses are expected to eliminate or minimise risks arising from work so far as is reasonably practicable. This is the core practical standard that runs through the duty provisions.

For business owners, these principles mean that WHS analysis should start with the real work arrangement. Ask who conducts the work, who influences or directs it, who controls the place, who controls the plant or systems, and whether another party is also involved. If the answer is yes to more than one of those questions, overlapping duties are likely and should be managed on that basis.

The central business duty is the primary duty of care in section 19. This is the provision most PCBUs need to understand first.

Section 19 requires a PCBU to ensure, so far as is reasonably practicable, the health and safety of workers while the workers are at work in the business or undertaking if the workers are engaged, or caused to be engaged, by the person, or if the workers' activities in carrying out work are influenced or directed by the person. This wording matters. It means the duty is not limited to direct employees. It extends to workers engaged by the PCBU, workers the PCBU causes to be engaged, and workers whose activities are influenced or directed by the PCBU.

Section 19 also requires the PCBU to ensure, so far as is reasonably practicable, that the health and safety of other persons is not put at risk from work carried out as part of the conduct of the business or undertaking. That can include customers, visitors, members of the public and others affected by the work.

The structure of section 19 then identifies the kinds of matters this duty covers. In practical terms, the duty reaches the work environment, plant and structures, systems of work, the safe use, handling and storage of plant, structures and substances, the adequacy of facilities for workers' welfare, the provision of information, training, instruction and supervision, and monitoring of workers' health and workplace conditions where needed to prevent illness or injury.

Businesses should read section 19 as a practical operating duty. It is not enough to have a generic policy. The question is whether the business has taken reasonably practicable steps to make the work safe for the workers it engages, causes to be engaged, or influences or directs, and to avoid exposing other people to risk.

The Act does not stop at the primary duty of care. Part 2 also imposes further duties on PCBUs in specific roles.

Sections 20 and 21 deal with PCBUs that have management or control of workplaces, and management or control of fixtures, fittings or plant at workplaces. These provisions matter where a business controls premises, common areas, access arrangements, building systems, equipment or other physical aspects of the workplace.

Sections 22 to 26 impose duties on PCBUs that design, manufacture, import, supply, install, construct or commission plant, substances or structures. These provisions are important for businesses involved in the supply chain of equipment, structures and substances, not just the end user.

Part 2, Division 4 then imposes duties on officers, workers and other persons at the workplace. Section 27 deals with the duty of officers. Section 28 deals with duties of workers. Section 29 deals with duties of other persons at the workplace. For businesses, this means WHS compliance is not only about the entity itself. Senior decision-makers, workers and others at the workplace also have statutory responsibilities under the Act.

If your business controls a site, provides plant, imports or supplies equipment, or has officers making decisions about resources and systems, these additional duties should be reviewed alongside section 19 rather than treated as separate afterthoughts.

Part 5 of the Act creates a detailed framework for consultation, representation and participation. This is not just a general statement that consultation is good practice. The Act imposes consultation duties and sets out how the framework works.

Section 46 imposes a duty to consult with other duty holders. This applies where more than one person has a duty in relation to the same matter. Because the Act also says duties are not transferable and more than one person can have a duty at the same time, section 46 is especially important for shared sites, contractor arrangements and multi-party work environments.

Sections 47 to 49 deal with consultation with workers. Section 47 imposes the duty to consult workers. Section 48 addresses the nature of consultation. Section 49 addresses when consultation is required. Businesses should therefore treat worker consultation as a legal requirement when the Act says it is required, not merely as a useful management technique.

Part 5 also deals with health and safety representatives, work groups, health and safety committees, issue resolution, the right to cease unsafe work, provisional improvement notices and WHS disputes. Not every business will need every part of this framework every day, but the structure matters because it gives workers and representatives formal mechanisms under the Act.

In practice, businesses should check whether they have arrangements that allow consultation to happen when decisions are made about hazards, risks, changes to work, facilities, procedures or issue resolution. They should also be ready to deal with representative structures if workers request them or if the Act otherwise brings those mechanisms into play.

Part 3 of the Act deals with incident notification. The Act includes sections on what is a notifiable incident, what is a serious injury or illness, what is a dangerous incident, the duty to notify of notifiable incidents and the duty to preserve incident sites.

Because the available text here is focused mainly on the Act's structure and only part of the detailed wording of Part 3 is visible, businesses should keep their understanding at a high level unless they check the current sections directly. The key point is that serious workplace events can trigger immediate statutory duties, including notification and site preservation obligations.

If an incident occurs, a business should promptly check the current wording of sections 35 to 39 and any current regulator guidance. The business should identify whether the event may be a notifiable incident, who is the relevant duty holder for notification, and whether the site must be preserved. These questions should be addressed quickly because delay can create compliance risk.

Businesses should also remember that incident response sits within the broader duty framework. A serious event may expose issues in systems of work, supervision, plant, training, consultation or coordination with other duty holders. Even where the immediate legal question is notification, the wider WHS system should also be reviewed.

Section 27 imposes a duty on officers. The Act's structure makes clear that WHS is also a governance issue, not only a site-level issue. Officers should therefore understand that the Act places direct obligations on them in addition to the duties imposed on the PCBU.

Section 28 imposes duties on workers, and section 29 imposes duties on other persons at the workplace. This matters because WHS compliance depends on conduct across the workplace, not only on management systems. Businesses should make sure workers and others understand that the Act expects safe conduct from them as well.

The definition section also shows that health includes physical and psychological health. Businesses should therefore read the Act's health and safety framework broadly rather than limiting it to obvious physical injury risks only.

For officers and managers, the practical check is whether WHS is being considered in decisions about staffing, systems, plant, supervision, training and operational change. For workers and others, the practical check is whether they understand the workplace rules, the hazards and the reporting pathways that apply to the work they are doing.

Section 2 states that the Act commences on 1 January 2012 or on such later day as may be appointed by proclamation before 1 January 2012. The NSW legislation website records the current version as the version for 1 March 2026 to date, accessed on 3 June 2026. It also states that the provisions displayed in that version have all commenced.

The status information also notes some amendments that are not yet commenced. These include part of the Work Health and Safety Amendment (Industrial Manslaughter) Act 2024, an amendment under the Industrial Relations and Other Legislation Amendment (Workplace Protections) Act 2025 stated to commence on 1 July 2026, and parts of the Work Health and Safety Amendment (Digital Work Systems) Act 2026. That means businesses should be careful to distinguish between the current in-force text and future amendments that may change the position.

when checking the current position under this Act, check the current NSW legislation version, any relevant regulations made under the Act, and any approved codes of practice. Section 4 states that 'this Act' includes the regulations, and Part 14 deals with approved codes of practice and their use in proceedings. For practical compliance, those instruments can matter as much as the Act's headline duties.

A sensible final check is to confirm five things: whether you are a PCBU for the activity, who counts as a worker, whether the place is a workplace, whether another person also holds a duty, and whether any more detailed regulation or code applies to the hazard involved.