• Compliance

SWMS vs JSA: which one do you need? Same-site Australian example

SWMS vs JSA on one Australian job: ground-floor tiling is a JSA, first-floor roofing on the same extension is a SWMS. Legal difference and when each is enough.

28 Aug 2026 · 11 min read

They look the same. Both have steps, hazards, controls and risk ratings. Both end in a PDF. Builders still ask for one or the other at the gate — and getting it wrong gets jobs shut down. The difference is not the table layout. It is legal weight.

Lists of “when to use which” are easy to skim and hard to apply. Below, one two-storey residential extension in Leichhardt, NSW is documented both ways: a JSA for ground-floor tiling, and a SWMS for first-floor roof sheeting on the same site. If you can see why those two tasks are different documents, you can decide on your own job.

The short answer

SWMS — Safe Work Method Statement. Legally required before any of the high-risk construction work (HRCW) categories in Schedule 3 of the model WHS Regulations (regulation 291). Victoria covers the same idea under the OHS Act 2004 and OHS Regulations 2017.
JSA — Job Safety Analysis. A best-practice risk assessment. Useful for any task, prescribed for none — but principals often want one to enter site.

A JSA is not a legal substitute for a SWMS on HRCW. If a principal also wants a JSA when a SWMS is already required, that is extra paperwork — not a replacement.

One site, two documents

Site: two-storey residential extension, Leichhardt NSW 2040. The ground floor is a new wet area being tiled. The first floor is getting metal roof sheets. Same builder, same week, same address. Different legal documents.

Ground-floor tiling stays inside the new bathroom, off the floor, with a wet saw in the backyard. No fall greater than 2 m, no energised electrical work, no asbestos, no trench. That is a JSA job. First-floor roof sheeting has a risk of a person falling more than 2 metres — HRCW category 1 on the high-risk construction work list. That is a SWMS job. You do not “upgrade” the tiling JSA to cover the roof, and you do not “downgrade” the roof SWMS to a JSA because the site is domestic.

JSA excerpt — ground-floor bathroom tiling

PCBU: the tiling subcontractor. No HRCW category. Legislation on a NSW JSA is still worth citing (WHS Act 2011 (NSW), WHS Regulation 2017 (NSW)) but there is no prescribed JSA format. Consultation with the two tilers still matters.

Job / task: Tile new ground-floor bathroom — residential extension
Site: Two-storey extension, Leichhardt NSW 2040
Document: JSA · not HRCW · excerpt
PPE: Hi-vis, steel-caps, glasses, P2 when cutting, kneepads, gloves when mixing

Excerpt only — three steps so you can see the layout. A live JSA still needs the full sequence, a sign-on, and consultation with the crew. For a complete filled sample of a different non-HRCW job, see the interior painting JSA example.

Step	Hazards	Controls	5×5 risk
1. Set up the new ground-floor bathroom, protect adjacent finishes Responsible: Leading hand	Slips on screed, water and plastic protection Other trades in the same extension Cuts from leftover framing offcuts	Sign in with the builder; confirm services are capped before tiling starts Keep a dry access path; tape protection at doorways Bin framing offcuts before the first tile comes off the pack	InitialL3×C2 = 6 Medium ResidualL1×C2 = 2 Low
2. Cut tiles with a wet saw in the backyard Responsible: Tiler	Lacerations from the blade and broken tiles Silica / ceramic dust and slurry Electric shock if the saw and leads get wet	Cut outdoors on a stable bench; guard on; no gloves on the rotating blade Keep water feed on; P2 and glasses; do not dry-cut tiles RCD-protected lead; keep connections off the ground	InitialL4×C3 = 12 High ResidualL2×C3 = 6 Medium
3. Lay tiles, grout and clean up Responsible: Tiler	Kneeling and repetitive strain Skin contact with adhesive and grout Trips on leftover packs during pack-up	Kneepads; rotate between cutting and laying Gloves when mixing; wash off adhesive before it cures Stack unused packs against the wall; final walk-through with the builder	InitialL3×C2 = 6 Medium ResidualL2×C2 = 4 Low

SWMS excerpt — first-floor metal roof sheeting

PCBU: the roofing subcontractor. HRCW category: risk of a person falling more than 2 metres. The SWMS must name that category, name the PCBU, record who was consulted, and say how the controls will be implemented, monitored and reviewed — not just list them. Residual risk on a live roof often stays High even after edge protection. That is expected; it is why the SWMS exists.

Job / task: Install metal roof sheets on first-floor extension
Site: Same address — two-storey extension, Leichhardt NSW 2040
Document: SWMS · HRCW: fall > 2 m · excerpt
PPE: Hard hat, hi-vis, steel-caps, glasses, cut-resistant gloves, sun protection

This task is high-risk construction work. A JSA is not a legal substitute. Edge protection goes in before anyone works on the roof. Full SWMS form: SWMS template.

Step	Hazards	Controls	5×5 risk
1. Access the first-floor roof and install edge protection Responsible: Supervisor	Fall more than 2 m from the roof or incomplete floor Falling tools and offcuts onto the ground-floor crew Unstable access (ladder not footed)	Scaffold or guardrails at all open edges before anyone works on the roof Exclusion zone below; tool tethers; hard hats on the ground floor Ladder tied off, 1:4 pitch, three points of contact; second person foots the ladder while climbing	InitialL3×C5 = 15 High ResidualL2×C5 = 10 High
2. Land and spread metal roof sheets Responsible: Leading hand	Sheets acting as a sail in wind — fall or struck-by Cuts from sheet edges Manual handling of long sheets on a pitch	Do not lift sheets in high wind; two-person carry; rest sheets on the battens immediately Cut-resistant gloves; don't carry sheets above shoulder height on the pitch Keep the exclusion zone below until sheets are sitting	InitialL4×C4 = 16 Critical ResidualL2×C5 = 10 High
3. Fix sheets, flashings and penetrations Responsible: Roof plumber	Fall through an unsheeted bay or off the eave UV and heat on a west-facing pitch Nearby overhead electrical service on the laneway	Work from sheeted areas only; never step on an unsecured sheet Long sleeves, sunscreen, water; stop if heat makes the pitch unsafe Spotter for the laneway service; no metal sheets raised toward the line	InitialL3×C5 = 15 High ResidualL2×C5 = 10 High

Look at the residual scores. Tiling drops into Low/Medium. Roofing stays High after controls because the consequence of a fall from the first floor is still severe. A JSA that scored that roof as Low would be lying about the job.

Side-by-side: legal weight, content, when each is enough

	JSA	SWMS
Legal weight	Best-practice risk assessment. No prescribed form under model WHS.	Legally required for HRCW before work starts (model WHS Schedule 3 / regulation 291). Victoria: OHS Act 2004 / OHS Regulations 2017.
Who requires it	Your own PCBU as policy; many principals and builders at the gate.	The WHS/OHS laws, plus the principal, builder and regulator.
Required content	No mandated headings. A useful JSA still has steps, hazards, controls, a responsible person and a 5×5.	Work steps, hazards, controls, how controls are implemented / monitored / reviewed, PCBU, HRCW category, worker consultation, legislation and codes.
Legislation refs	Optional but useful (state WHS Act/Regulation, or Vic OHS Act/Regulations).	Expected — name the state Act/Regulation and the relevant code (e.g. managing the risk of falls).
When it is enough	When the task is not HRCW — ground-floor fit-out, interior painting under 2 m, low-risk maintenance.	Whenever any HRCW category applies. A JSA on the same job does not make the SWMS optional.

Structurally, almost nothing in the table is different. The SWMS adds the legal fields: PCBU, HRCW category, consultation record, and how the controls will be kept alive for the duration of the work. That is what regulators look for — not a fancier risk colour.

When to use a SWMS

Use a SWMS whenever the job involves any HRCW activity: a risk of a fall greater than 2 m, work on or near energised electrical installations, demolition of a load-bearing element, confined space, trench or shaft deeper than 1.5 m, asbestos disturbance, powered mobile plant movements, and the rest of the 18 categories. Domestic work is not exempt. A first-floor roof on a house in Leichhardt is still HRCW.

Point roofing, rooftop solar, and anything with a fall greater than 2 m at the SWMS template — not a JSA.

When a JSA is enough

Use a JSA for work that is not HRCW but still needs a written risk assessment: ground-floor tiling, joinery, interior painting from a platform under 2 m, warehouse tasks without powered mobile plant, office moves. See a complete filled JSA example (interior painting, Hawthorn VIC) and generate your own from the JSA template.

Many principals still want a JSA in the induction pack as well as a SWMS. Hand them both if that is the site rule. Do not hand them only the JSA for the roof.

A JSA is not a legal substitute for a SWMS on high-risk construction work. Extra paperwork for the principal is not a replacement for the document the regulations name.

What is the difference between a SWMS and a JSA?

Structurally they look similar — steps, hazards, controls, risk scores. A SWMS has legal weight on high-risk construction work: it must identify the PCBU, the HRCW category, worker consultation, and how controls will be implemented and reviewed. A JSA has no prescribed format under the model WHS laws. More background: what is a SWMS.

Do I need a SWMS or a JSA?

If any high-risk construction work category applies — including a risk of a fall greater than 2 metres, work near energised electrical services, or rooftop solar and roofing at heights — you need a SWMS before work starts. Use a JSA for work that is not HRCW but still needs a written risk assessment, such as ground-floor fit-out or interior painting from a platform under 2 m. If both apply on the same site — as in Leichhardt — write both, each for its own task. Do not merge a roof SWMS and a tiling JSA into one vague PDF.

Can a JSA replace a SWMS on high-risk construction work?

No. A JSA is not a legal substitute for a SWMS on HRCW. SafeWork NSW, WorkSafe Victoria and the other regulators treat a missing SWMS as a breach. A principal who also wants a JSA on the gate is asking for extra paperwork, not a replacement.

The easy way to do both

The same generator writes a state-aware SWMS or JSA from a plain-English job description — steps, hazards, controls, 5×5 scores, branding on the PDF. Create a free account and pick the document that matches the task, not the one that is faster to copy.

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