SWMS, JSA and SSSP: what New Zealand sites actually need (2026)
New Zealand's Health and Safety at Work Act 2015 (HSWA) takes a different approach from Australia's prescriptive rules. It doesn't hand you a single mandatory form. Instead it places a broad duty on every business — a PCBU — to identify hazards and manage risks so far as is reasonably practicable. In construction, that duty is met in practice through a small family of documents: the SWMS, the JSA and the SSSP. Knowing what each is, and when you actually need it, saves a lot of confusion on site.
SWMS and JSA
A Safe Work Method Statement (SWMS) or Job Safety Analysis (JSA) breaks a task into steps, identifies the hazards in each step, and sets out the controls. They're essentially the same idea under two names, and they're the standard way to show higher-risk work — work at height, excavation, work near services, demolition, confined spaces, mobile plant — is being done safely. Main contractors almost always require one before you start.
The SSSP
The Site-Specific Safety Plan sits above the individual SWMS. It describes how health and safety will be run on a particular project as a whole — the hazards, the controls, who's responsible, induction and emergency arrangements — and it pulls in each subcontractor's SWMS. On any managed site you'll be asked for both your SSSP and the SWMS for your high-risk tasks.
Notifiable work
Some activities are notifiable work that must be reported to WorkSafe New Zealand before you begin — for example certain scaffolding, excavation and asbestos work. Check the current WorkSafe list; notifying is separate from, and in addition to, your SWMS.
Questions, answered
Is a SWMS legally required in New Zealand?
HSWA doesn't name the SWMS as a mandatory form the way Australian law does. But you must manage risks so far as is reasonably practicable, and a SWMS or JSA is the accepted way to demonstrate that for higher-risk work — which is why main contractors require them.
What's the difference between a SWMS and an SSSP?
A SWMS covers a specific task or activity. The Site-Specific Safety Plan (SSSP) covers the whole project and incorporates the individual SWMS from each contractor on site.
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