Quick answer: A WHS management system is the permanent, organisation-wide framework of policies, procedures, and records a business uses to manage safety. A WHS management plan is a project-specific document — most commonly required on construction projects — that describes exactly how safety will be managed on that site and for that scope of work.
Last reviewed: June 2026 by the BlueSafe Technical Team. Reflects current Australian WHS laws and regulations.
The terms "WHS management plan" and "WHS management system" are often used interchangeably, but they are not the same thing. Confusing the two can leave a business thinking it has more coverage than it actually does, or spending time creating a project document when what is really needed is an organisation-wide system. This guide explains both, when each is required, and how they work together.
What is a WHS management system?
A WHS management system is the permanent, structured framework an organisation uses to manage health and safety as an ongoing business process. It is not a single document — it is a connected set of policies, procedures, registers, forms, and records that covers everything from hazard identification to incident investigation to contractor control.
The system applies to all of an organisation's work, all the time. It is not created for a specific project and it does not end when a job finishes. When a new project starts, the system provides the foundation — the procedures, templates, and registers — that supports the management of that project.
For a deeper overview of what a WHS management system includes and how to build one, see the guide: What is a WHS Management System?
What is a WHS management plan?
A WHS management plan is a project-specific or site-specific document that sets out how WHS will be managed for a defined scope of work. It identifies the hazards relevant to that project, nominating the responsible people and the controls that will be applied during that work.
WHS management plans are most commonly associated with construction projects. Under the Model WHS Regulations (regulation 309), a principal contractor for a construction project with a contract value of $250,000 or more must prepare a WHS management plan before construction work begins. The plan must be maintained and kept on site throughout the project.
A WHS management plan is effectively a tailored application of the organisation's broader system to one specific site or project. Once the project ends, the plan is archived rather than maintained as a live document.
At-a-glance comparison
| Feature | WHS management system | WHS management plan |
|---|---|---|
| Scope | Organisation-wide | Project-specific or site-specific |
| Duration | Ongoing, permanent | Active for the life of the project |
| Who prepares it | The PCBU or organisation | Principal contractor (or PCBU for specific projects) |
| Legal trigger | Implied by WHS duties across all jurisdictions | Regulation 309, Model WHS Regs — construction projects $250k+ |
| Core content | Policies, procedures, registers, training, incidents, records | Site hazards, responsibilities, controls, inductions, emergency procedures |
| Used by | All workers, supervisors, managers across the business | Workers and subcontractors on that specific site or project |
| Archived when? | Continuously updated; not archived | At project completion |
| Supports | All WHS obligations across the business | Principal contractor duty for that project |
What must a WHS management plan include?
For construction projects covered by the Model WHS Regulations, the plan must include at minimum:
- the names and positions of the people responsible for WHS on the site;
- the arrangements for consulting and co-ordinating with workers and subcontractors;
- the site-specific hazards and the risk controls that will be applied;
- the induction arrangements for workers arriving on site;
- the procedures for managing incidents on site;
- the emergency procedures specific to the project.
Some clients or contracts require more than the regulatory minimum. Many principal contractors also include subcontractor management arrangements, a traffic management plan, and a site-specific environmental section within or alongside the WHS management plan.
What must a WHS management system include?
A WHS management system needs to cover all of the ongoing duties a business holds under the WHS Act and Regulations. Core components include:
- WHS policy and commitment statement;
- hazard identification and risk management process (risk register, risk assessments, SWMS);
- safe systems of work for routine tasks;
- consultation and communication arrangements;
- training, induction, and competency records;
- contractor and supplier management;
- incident reporting and investigation;
- emergency response arrangements;
- record keeping and document control;
- review and continuous improvement processes.
The system must be documented and actively maintained — it should not be a set of templates that exist only in a folder.
How do they work together?
For most construction businesses, the two documents complement each other. The WHS management system is the business's permanent safety framework. When a new project is awarded, the principal contractor draws on the system — its templates, risk controls, induction processes, emergency procedures — to produce the project-specific WHS management plan.
Think of it this way: the system is the infrastructure; the management plan is the project built on it.
A business that has a strong WHS management system can produce a compliant WHS management plan much more efficiently, because the underlying procedures, forms, and records already exist. A business that only has project-specific plans without a system is repeating work from scratch each time and is likely to have gaps in its ongoing obligations between projects.
When do you need each?
You need a WHS management system if you:
- employ workers or engage contractors in any industry;
- operate in a high-risk industry (construction, manufacturing, transport, healthcare);
- tender for government or corporate contracts that require evidence of a safety system;
- are a PCBU and want a defensible record of how you meet your WHS duties.
You need a WHS management plan if you are:
- the principal contractor on a construction project valued at $250,000 or more;
- undertaking notifiable construction work or high-risk construction work where a plan is required or expected;
- required by a client, head contractor, or code of practice to produce a project-specific WHS plan.
Subcontractors on a construction project must comply with the principal contractor's plan and must ensure their own workers understand it. They are not usually required to produce a whole-of-project plan, but they will need SWMS and their own management system to support compliance.
For a full overview of the documents required by principal contractors, see: WHS Documents for Principal Contractors
State and territory variations
This page is based on the Model WHS Act and Model WHS Regulations published by Safe Work Australia, which have been adopted — with some variations — across most jurisdictions.
| Jurisdiction | Regulator | Key notes |
|---|---|---|
| NSW | SafeWork NSW | Model WHS framework; principal contractor plan requirements apply |
| VIC | WorkSafe Victoria | Uses OHS framework; equivalent site safety management obligations apply under the OHS Regulations |
| QLD | Workplace Health and Safety Queensland | Follows Model WHS Regulations; construction work plan requirements apply |
| SA | SafeWork SA | Follows Model WHS Regulations |
| WA | WorkSafe Western Australia | Model WHS framework; verify local guidance on construction project thresholds |
| TAS | WorkSafe Tasmania | Follows Model WHS Regulations |
| ACT | WorkSafe ACT | Follows Model WHS Regulations |
| NT | NT WorkSafe | Follows Model WHS Regulations |
Always verify current requirements with your state or territory regulator. Local codes of practice and guidance materials may impose additional obligations or set different thresholds.
Related guides
Frequently asked questions
What is the difference between a WHS management plan and a WHS management system?
A WHS management system is the ongoing, organisation-wide framework of policies, procedures, registers, and records used to manage health and safety across all work. A WHS management plan is a project-specific document that applies those controls to one site or scope of work for the duration of the project.
When is a WHS management plan legally required?
Under the Model WHS Regulations, a principal contractor on a construction project valued at $250,000 or more must prepare a WHS management plan before work begins. Check the requirements in your jurisdiction, as thresholds and triggers can vary.
Can a WHS management plan replace a WHS management system?
No. A plan covers a single project and is archived when the project ends. A system is permanent and organisation-wide. Principal contractors need both — the system provides the foundation from which each project plan is developed.
Does a subcontractor need a WHS management plan?
Subcontractors are not typically required to produce a whole-of-project plan, but they must comply with the principal contractor's plan and provide their own SWMS and risk controls for their scope of work. Their own WHS management system supports that compliance.
Get the right documents for your business
Whether you need an organisation-wide WHS management system, a construction project management plan, or the SWMS and registers that sit within either, having the right templates and structure makes compliance far more manageable.
Explore WHS documents for your business
This article is general information only. It does not constitute legal advice. WHS requirements vary between jurisdictions and by the nature of work performed. Always consult your state or territory regulator and, where appropriate, a qualified WHS professional for advice specific to your situation.