The site plan, the task method statement, and what each one is actually for
An SSSP (site-specific safety plan) describes how health and safety will be managed on a whole site or project. A SWMS (safe work method statement) — also called a JSA or task analysis — sets out how one higher-risk task is done safely, step by step. You usually need both. Unlike Australia, NZ law doesn't require a SWMS by name — but the outcomes it delivers are required.
An SSSP is about the whole site; a SWMS is about a single task. They operate at different levels and do different jobs.
The SSSP sets the overall framework for a particular site or project — who is responsible, the site hazards and rules, induction, emergency procedures and how subcontractors are managed. The SWMS zooms in on one higher-risk task — say, working on a roof — and breaks it into steps, with the hazards and controls for each. On a typical project you will have one SSSP for the site, and a SWMS (or task analysis) for each high-risk activity carried out on it.
Not by name — but don't read that as “optional”.
Unlike Australia, where a SWMS is legally required for high-risk construction work, New Zealand's HSWA does not mandate a SWMS or an SSSP by name. However, the outcomes these documents deliver — identifying and controlling risks, engaging workers, and providing information and instruction — absolutely are required. In practice, principals and main contractors almost always require an SSSP before you start on site, and a SWMS or task analysis for high-risk work, as a condition of the contract. WorkSafe also does not treat a SWMS as a standalone compliance document: if it does not reflect how the work is actually done, it offers little protection in an investigation.
An SSSP pulls your whole approach for one site into a single document.
| Section | What to include |
|---|---|
| Project & site details | The site, the work, key dates, and the businesses involved. |
| Roles & responsibilities | Who is responsible for what, including the principal, contractors and supervisors. |
| Site hazards & controls | The significant site hazards and how they are controlled. |
| Site rules & PPE | The rules everyone on site must follow, and required PPE. |
| Induction | How workers, contractors and visitors are inducted onto the site. |
| Emergencies | Emergency and evacuation procedures, first aid, and assembly points. |
| Subcontractors | How subcontractors are selected, managed and coordinated. |
| Reporting & review | Incident reporting, consultation, and how the plan is reviewed. |
A SWMS breaks one task into steps and attaches the hazards and controls to each.
| Element | What to include |
|---|---|
| The task | What the task is, where, and who is doing it. |
| Job steps | The task broken into its sequence of steps. |
| Hazards | The hazards at each step, and who could be harmed. |
| Controls | The control for each hazard, chosen using the hierarchy of controls. |
| Responsibility | Who is responsible for each control, and any permits or competencies needed. |
| PPE | The PPE required for the task. |
| Sign-off | The workers doing the task confirm they understand it. |
A SWMS, JSA (job safety analysis) and task analysis are essentially the same kind of document under different names. A SWMS is an administrative control — it does not replace higher controls such as elimination, isolation or engineering.
These documents only protect people when they are specific, honest and actually used.
Write them with the workers who do the task, not for them — they know the real steps and hazards. Keep each one task-specific rather than a generic catch-all, make sure it reflects how the work is genuinely done, and review it when the task, site or conditions change. A SWMS that sits in a folder while the crew works a different way is worse than useless: it gives false comfort and offers no protection if something goes wrong.
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An SSSP (site-specific safety plan) covers how health and safety is managed across a whole site or project. A SWMS (safe work method statement) covers how one higher-risk task is carried out safely, step by step. You typically need an SSSP for the site and a SWMS for each high-risk task.
Not by name. Unlike Australia, the HSWA does not mandate a SWMS for high-risk construction work. However, the outcomes a SWMS delivers — identifying and controlling risks and engaging workers — are required, and principals or main contractors usually require a SWMS contractually.
Essentially yes. A safe work method statement (SWMS), job safety analysis (JSA) and task analysis are different names for the same kind of task-level document that breaks a job into steps and sets out the hazards and controls for each.
The people who actually do the task should help write it, with supervisor input. They understand the real steps and hazards, and involving them produces a more accurate document and stronger buy-in. A SWMS written in isolation often fails to match how the work is really done.
No. These documents support and communicate your risk management, but they do not replace it. A SWMS is an administrative control and does not replace higher controls such as elimination, isolation or engineering, and WorkSafe does not treat a SWMS as a standalone compliance document.
