SWMS vs JSA: What’s the Difference and When Do You Need Each?

Ask a few site supervisors the difference between a SWMS and a JSA and the answers vary. Some use the terms interchangeably, and others think a JSA is a SWMS for work outside construction. The short version is that one is a legal requirement for specific work, and the other is a planning tool you can use for almost anything.

What is a SWMS?

A Safe Work Method Statement (SWMS) is a document that sets out high risk construction work activities, the hazards involved, and the control measures that will be put in place. It is a legal requirement under the model Work Health and Safety Regulations.

Regulation 299 requires a PCBU carrying out high risk construction work to prepare a SWMS, or make sure one is prepared, before the work starts. Regulation 291 lists the 18 categories of high risk construction work. They include work:

• where there is a risk of a person falling more than 2 metres
• on or near energised electrical installations or services
• in or near a trench or shaft deeper than 1.5 metres
• involving demolition of load-bearing elements
• in an area with movement of powered mobile plant
• near pressurised gas mains or chemical, fuel or refrigerant lines

The SWMS must identify the work, state the hazards and risks, and describe the controls and how they will be put in place, monitored and reviewed. It must be written so the workers doing the job can understand it. The work must then be done in line with the SWMS (regulation 300), and it must be kept and available until the work is finished (regulation 303).

Safe Work Australia’s Construction Work Code of Practice has more detail and a sample template.

Victoria runs under its own OHS Regulations 2017 rather than the model WHS laws, but it also requires a SWMS for high risk construction work.

What is a JSA?

A job safety analysis (JSA), also called a JSEA (job safety and environmental analysis) or JHA (job hazard analysis), breaks a task into its steps and records the hazards and controls for each step.

A JSA is not named in the WHS laws. It is a practical way of meeting the general duty to identify hazards and control risks under regulations 34 to 36. Because it is not tied to construction, you can use a JSA for maintenance, warehousing, cleaning, laboratory work, or any non-routine task where the risks are not already covered by a procedure.

Our free JSA template gives you the standard step, hazard, control and responsibility columns to start from.

SWMS vs JSA side by side

• Legal requirement: a SWMS is required for high risk construction work (r 299); a JSA is a good practice tool.
• Scope: a SWMS covers the 18 types of high risk construction work; a JSA can cover any task in any industry.
• Focus: a SWMS sets out high risk activities and their controls; a JSA works through each step of a specific task.
• Who prepares it: the PCBU prepares the SWMS in consultation with workers; a JSA is usually done by the crew with a supervisor.
• When reviewed: a SWMS is reviewed when controls are not working or the work changes; a JSA is redone before each non-routine job or when the task changes.

Can a JSA replace a SWMS?

Not for high risk construction work. If the work is on the list in regulation 291, you need a SWMS that meets the requirements of regulation 299, whatever you call the document. A document headed “JSA” can meet that requirement if it contains everything a SWMS must contain, but calling it a SWMS avoids confusion with inspectors and principal contractors.

The reverse is common and sensible: a SWMS covers the high risk activity across the job, and a JSA, or a quick Take 5, picks up the specific conditions on the day. Our Take 5 safety check page explains where that last layer fits.

Common mistakes

• Generic, off-the-shelf SWMS. A 40-page document bought online and never changed for the site won’t reflect the actual work or the risks of that site, which r 299(3) requires it to take into account.
• Signed but not read. The workers doing the job need to understand it. Talk it through before work starts.
• Not updated when the job changes. If the method changes, the SWMS has to be reviewed.
• No link back to the risk register. Hazards found in SWMS and JSAs should feed your site risk register so controls are tracked.

Our post on building a WHS risk register in Australia explains how task-level assessments connect to the bigger picture. For the overhead power line example in practice, see overhead lines and exclusion zones before a lift.

More free tools are on our WHS templates page.

Keeping it all connected

SWMS, JSAs and Take 5s work best when the hazards they find end up somewhere that gets managed. In Lahebo you can log the hazards from your SWMS and JSAs in the risk register and give each action a named owner, so nothing gets lost in a site folder. Book a demo to see how it fits your projects.