Quick answer: A SWMS must be reviewed and updated whenever it is no longer adequate for the work being done. If the site, hazards, controls, or work method changes, the document has to change too.
Last reviewed: March 2026 by the BlueSafe Technical Team. Reflects current Australian WHS laws and regulations.
A SWMS is only useful while it matches the real work. Once the task changes, the original document may no longer describe the hazards or controls accurately, which means workers can no longer rely on it as a safe system of work.
Why is a SWMS a living document?
A SWMS is written for actual work in actual conditions. That means it has to stay connected to the site, the crew, the plant, the weather, the sequence of tasks, and any new hazards that appear.
The moment the work changes, the risk picture changes too. The document should be treated as something that moves with the job, not something that gets filed away after sign-off.
When must a SWMS be reviewed?
The legal trigger is simple: if the SWMS is no longer adequate, it must be revised. In practice, that can happen for many reasons.
| Trigger | Legal basis | Required action |
|---|---|---|
| Change in work conditions or scope | The SWMS no longer matches the job | Review and update before continuing |
| New hazard identified | New risk has emerged | Add the hazard and revise controls |
| Incident or near-miss | Work method has shown weakness | Investigate and revise the document |
| Worker raises a WHS concern | Consultation has identified a gap | Assess the concern and update if needed |
| SafeWork inspector directs a review | Regulatory direction | Update immediately or within the required timeframe |
| Principal contractor requests an update | Site control requirement | Align the SWMS to the site change |
| Reuse for a similar but different job | Site conditions may differ | Review before each new job |
The review does not have to wait for a serious event. If the change is obvious, the SWMS should be updated before work continues.
What usually triggers a SWMS update on site?
Common triggers include:
- a different crew or subcontractor arriving on site;
- weather conditions changing the risk profile;
- a new plant item being introduced;
- access routes changing;
- the scope of work expanding or shrinking;
- a hazard being found during the task;
- a worker saying the current controls are not working.
The more dynamic the job, the more likely the SWMS will need revision. This is especially true where the work is tightly sequenced or where multiple trades are sharing the same area.
How do you review a SWMS step by step?
The review process should be simple enough that supervisors actually use it.
- Identify the trigger that has changed the work.
- Stop and consult the workers who are doing the task.
- Recheck the hazards and current controls.
- Decide whether the existing controls are still adequate.
- Amend the SWMS where the work or hazards have changed.
- Record the reason for the change and the date of the update.
- Reissue the revised SWMS to all affected workers.
- Confirm the workers understand the update before work resumes.
If the review shows that the task cannot be done safely in its current form, the right answer is to stop and redesign the work rather than to keep patching the old document.
Who should review and approve the update?
The PCBU that controls the high-risk construction work carries the responsibility. In practice, the supervisor or WHS officer usually makes the update, but the workers performing the job should be involved because they know where the controls are and are not working.
| Role | Responsibility |
|---|---|
| PCBU | Ensure the SWMS is reviewed and remains adequate |
| Supervisor | Check the task, identify the change, and coordinate the update |
| Workers | Confirm the controls make sense in practice and raise gaps |
| Principal contractor | May require the revised SWMS before work continues |
The key point is that review is not a paper exercise. It is a check that the current method still matches the actual risk on site.
How do you document a SWMS review?
A good review record shows what changed and why the update was made. It should include:
- the date of the review;
- the job and site the SWMS applies to;
- the trigger for the review;
- the revised task or hazard details;
- the updated control measures;
- the person who approved the change;
- worker acknowledgment of the update.
Without that record, the business may be unable to prove that the revised document was actually used.
What should happen after the SWMS is updated?
Updating the document is not enough. The revised controls must be communicated and used.
That usually means:
- briefing the workers again;
- replacing old copies with the revised version;
- making sure the old version is not still being used on site;
- confirming the new controls are visible in the work area;
- checking that the revised document is stored with the job file.
If the work continues under the old SWMS after the update point, the business has effectively lost the protection the document was supposed to give.
Can the same SWMS be reused on another job?
Yes, but only as a starting point. A reused SWMS still has to be reviewed for the new site and the new conditions.
A reusable SWMS should be checked for:
- site-specific access and egress;
- different weather or ground conditions;
- different plant and tools;
- changed work sequencing;
- nearby services or traffic;
- different workers or subcontractors;
- different principal contractor requirements.
If the only thing that changes is the address, the document may still need very little editing. But if the site, task, or controls change, the old version is no longer enough.
What are the common mistakes when updating a SWMS?
| Mistake | Why it is a problem |
|---|---|
| Leaving the old version in circulation | Workers may follow outdated controls |
| Failing to record the reason for the change | The update cannot be explained later |
| Not reconsulting workers | The revised controls may not be practical |
| Updating only the header date | The content still does not match the work |
| Treating a generic template as site-specific | The SWMS is not tied to the actual job |
These failures are common because people often focus on completing the form rather than checking whether the control method has actually changed.
State and territory variations
The information on this page is based on the Model WHS Act and Model WHS Regulations published by Safe Work Australia, adopted (with some variations) across most jurisdictions.
| Jurisdiction | Regulator | Key notes |
|---|---|---|
| NSW | SafeWork NSW | Review when the SWMS is no longer adequate or the site conditions change |
| VIC | WorkSafe Victoria | SWMS-style controls remain expected for high-risk work |
| QLD | Workplace Health and Safety Queensland | Model WHS framework applies |
| SA | SafeWork SA | Model WHS framework applies |
| WA | WorkSafe Western Australia | Local guidance on high-risk work and working at heights should be checked before reuse |
| TAS | WorkSafe Tasmania | Model WHS framework applies |
| ACT | WorkSafe ACT | Model WHS framework applies |
| NT | NT WorkSafe | Model WHS framework applies |
Always verify current requirements with your state or territory regulator, as local codes of practice and guidance may impose additional obligations.
Related guides
- What Must a SWMS Include?
- How to Write a Safe Work Method Statement (SWMS)
- The 18 High-Risk Construction Work Activities in Australia
Frequently asked questions
When must a SWMS be reviewed and updated?
Whenever it is no longer adequate for the work being done, including when conditions, hazards, or work methods change.
Who is responsible for reviewing a SWMS?
The PCBU controlling the work is responsible, usually through the supervisor or WHS officer.
Do workers need to be informed when a SWMS is updated?
Yes. They need to see and understand the revised SWMS before they continue the work.
Can I use the same SWMS for multiple jobs?
Only as a starting point. It still has to be reviewed and adapted to the new site and conditions.
Get the right documents for your business
A SWMS is much easier to keep current when the supporting template structure already includes review triggers, revision fields, and consultation prompts. BlueSafe's SWMS products are designed to make that process straightforward.