A Safe Work Method Statement is one of the most important documents on any construction site. Get it right, and it protects your workers, satisfies regulators, and provides a clear record of due diligence. Get it wrong, and it is worse than having no document at all — because it creates a false sense of safety.
This guide walks you through every step of writing a SWMS that actually works, from understanding the legal requirements to building a proper hazard analysis with the 5x5 risk matrix and hierarchy of controls.
Contents
What Is a SWMS and When Do You Need One?
A Safe Work Method Statement (SWMS) is a document that identifies the hazards associated with a specific construction task, assesses the risks, and outlines the control measures that will be used to eliminate or minimise those risks.
Unlike a generic risk assessment, a SWMS is task-specific. It breaks down the work into sequential steps, identifies hazards at each step, and specifies exactly how those hazards will be controlled — by whom, with what equipment, and to what standard.
When Is a SWMS Required?
In New Zealand and Australia, a SWMS is required for high-risk construction work (HRCW). This includes, but is not limited to:
- Work at height where a person could fall 3 metres or more
- Work near live electrical installations or services
- Work in a confined space
- Demolition of load-bearing structures
- Excavation deeper than 1.5 metres
- Work on or near pressurised gas distribution mains or piping
- Work on telecommunications towers
- Work involving diving, powered mobile plant, or explosives
- Work in areas with artificial extremes of temperature
- Work in or near a shaft or trench deeper than 1.5 metres
Best practice: Even when not legally mandated, a SWMS is good practice for any task with significant hazards. It demonstrates due diligence and creates a clear safety record that can protect your business in the event of an incident or regulatory audit.
Legal Requirements in NZ and Australia
New Zealand — Health and Safety at Work Act 2015
Under the Health and Safety at Work Act 2015 (HSWA), a Person Conducting a Business or Undertaking (PCBU) has a primary duty of care to ensure, so far as is reasonably practicable, the health and safety of workers and others affected by the work.
The Health and Safety at Work (General Risk and Workplace Management) Regulations 2016 require PCBUs to:
- Identify reasonably foreseeable hazards arising from work
- Assess risks from those hazards that cannot be eliminated
- Eliminate risks so far as is reasonably practicable, or minimise them if elimination is not reasonably practicable
- Maintain, monitor, and review control measures to ensure they remain effective
While the HSWA does not use the specific term “SWMS,” the requirement to systematically identify hazards, assess risks, and implement and document controls creates a de facto requirement for written safe work procedures on high-risk tasks. WorkSafe New Zealand recognises SWMS documents as an appropriate method for meeting these obligations.
Australia — Work Health and Safety Act 2011
The model Work Health and Safety (WHS) Act 2011 and associated WHS Regulations explicitly require a SWMS for all high-risk construction work as defined in the Regulations. The SWMS must be prepared before work commences, be readily accessible on site, and workers must be made aware of its contents.
Key regulatory requirements under the WHS Regulations:
- The SWMS must identify the high-risk construction work to be carried out
- It must specify the hazards and risks arising from that work
- It must describe the control measures to be implemented to manage those risks
- It must describe how the control measures will be implemented, monitored, and reviewed
- It must be prepared in consultation with workers who will carry out the work
Enforcement: In Australia, high-risk construction work must not commence until a compliant SWMS is in place and workers have been briefed. Penalties for non-compliance can reach $600,000 for a body corporate under Category 2 offences. In NZ, PCBU duty failures can attract fines up to $3 million under HSWA section 48.
The 10 Sections Every SWMS Must Include
A comprehensive SWMS should include the following sections. While the specific format may vary by organisation, all of these elements must be addressed:
| # | Section | What to Include |
|---|---|---|
| 1 | Document Information | Title, document number, version, date prepared, review date, document status (Draft/Active/Archived) |
| 2 | Scope of Work | Task description, location, duration, plant and equipment, materials, number of personnel required |
| 3 | Qualifications & Training | Required training, certifications, licences, unit standards, and competency requirements for all personnel |
| 4 | PPE Requirements | All personal protective equipment required for the task, including standards (e.g., AS/NZS 1801 for helmets) |
| 5 | Hazard Analysis | Work steps, identified hazards, inherent risk ratings, control measures by hierarchy level, responsible persons, residual risk ratings |
| 6 | Legislation & Standards | Applicable acts, regulations, approved codes of practice, Australian/NZ Standards |
| 7 | Environmental Controls | Weather conditions, lighting, noise levels, air quality, ground conditions, adjacent hazards |
| 8 | Emergency Procedures | First aid arrangements, emergency contacts, assembly points, rescue procedures, incident reporting |
| 9 | Communication Plan | Toolbox talks, pre-start briefings, signage, radio channels, escalation procedures |
| 10 | Sign-Off | Worker acknowledgement, supervisor approval, review dates, digital or wet signatures |
The hazard analysis section is the heart of every SWMS. This is where you systematically break down the task, identify what can go wrong at each step, and specify exactly how you will prevent it. For a deep dive into how to build the hazard analysis, see our guides on the 5x5 risk matrix and the hierarchy of controls.
Understanding the 5x5 Risk Matrix
Risk is calculated by multiplying Likelihood (how likely the hazard is to cause harm) by Consequence (how severe that harm would be). This produces a risk score from 1 to 25.
Likelihood Scale (1–5)
| Score | Descriptor | Description |
|---|---|---|
| 1 | Rare | May occur only in exceptional circumstances |
| 2 | Unlikely | Could occur at some time but is not expected |
| 3 | Possible | Might occur at some time during normal operations |
| 4 | Likely | Will probably occur in most circumstances |
| 5 | Almost Certain | Expected to occur in most circumstances |
Consequence Scale (1–5)
| Score | Descriptor | Description |
|---|---|---|
| 1 | Insignificant | First aid treatment only, no lost time |
| 2 | Minor | Medical treatment required, short-term impact |
| 3 | Moderate | Lost time injury, restricted duties, hospital admission |
| 4 | Major | Permanent disability, single fatality |
| 5 | Catastrophic | Multiple fatalities or irreversible widespread harm |
Risk Rating Summary
| Score Range | Rating | Action Required |
|---|---|---|
| 1–4 | Low | Acceptable — proceed with standard controls and monitoring |
| 5–9 | Medium | Monitor — implement additional controls where reasonably practicable |
| 10–16 | High | Significant — management approval required, additional controls must be implemented before work proceeds |
| 20–25 | Extreme | Intolerable — do not proceed, redesign the task or implement further controls |
For a complete breakdown of the risk matrix with worked examples, see our 5x5 Risk Matrix Guide.
Extreme residual risk is never acceptable. If a hazard still has an Extreme risk rating (20–25) after controls are applied, the task must not proceed. You must redesign the work method or implement additional controls until residual risk is reduced to High or lower.
Applying the Hierarchy of Controls
The hierarchy of controls is a ranked system of control measures, ordered from most effective to least effective. You should always start at the top and work down, applying controls from as high in the hierarchy as reasonably practicable.
- Elimination — Remove the hazard entirely. Can the task be redesigned so the hazard does not exist?
- Substitution — Replace the hazard with something less hazardous. Can a safer material, tool, or process be used?
- Isolation — Separate people from the hazard. Can workers be physically separated from the danger zone?
- Engineering Controls — Use physical barriers, guards, ventilation, or safety systems to reduce risk.
- Administrative Controls — Change the way people work through training, procedures, permits, signage, or scheduling.
- PPE — Personal protective equipment is the last line of defence when higher-order controls cannot adequately manage the risk.
The two-level rule: Every hazard must have controls from at least two levels of the hierarchy. PPE should never be the only control measure — it is a backup, not a primary defence. For detailed examples of each level, see our Hierarchy of Controls guide.
Step-by-Step Writing Process
Follow this nine-step process to write a SWMS from scratch:
Step 1: Define the Task Clearly
Write a clear, specific description of the work to be performed. Include the site location, expected duration, equipment and materials, and number of workers. Vague task descriptions produce vague hazard analysis. For example, “roofing work” is too broad. “Installation of long-run steel roofing on a new-build residential dwelling, single storey, pitched roof at 25 degrees, using a boom lift for access, 3 workers over 2 days” gives your hazard identification a solid foundation.
Step 2: Break It Into Sequential Steps
List the work steps in the order they will be performed, from site arrival and setup through to completion and pack-down. Include mobilisation, preparation, execution, and demobilisation phases. Most tasks have between 5 and 12 steps. Each step should describe one discrete activity.
Step 3: Identify Hazards at Each Step
For each step, systematically ask: “What could go wrong here?” Consider falls from height, struck-by hazards, caught-in/between hazards, electrical contact, manual handling injuries, environmental exposure, chemical hazards, and health hazards such as noise and dust. Involve the workers who will do the task — they know the practical risks better than anyone.
Step 4: Assess Inherent Risk
Rate the likelihood and consequence of each hazard before any controls are applied, using the 5x5 matrix. This is the “inherent” or “uncontrolled” risk. It establishes the baseline and demonstrates why controls are necessary.
Step 5: Determine Control Measures
Work through the hierarchy of controls for each hazard. Start with elimination, then substitution, and work down. Document specific, actionable controls — not vague statements like “follow safe procedures.” Every hazard needs controls from at least two hierarchy levels.
Step 6: Assess Residual Risk
Re-rate the likelihood and consequence after controls are applied. This is the “residual” or “controlled” risk. If any hazard still rates as Extreme, go back to Step 5 and add more controls or redesign the task.
Step 7: Assign Responsibility
Specify who is responsible for implementing, monitoring, and maintaining each control measure. Use role titles rather than individual names (e.g., “Site Supervisor” or “Leading Hand”) so the document remains valid regardless of personnel changes.
Step 8: Complete Supporting Sections
Document the remaining sections: applicable legislation and standards, environmental controls, emergency procedures, communication plan, and qualification requirements. These sections provide the context that makes the hazard analysis actionable.
Step 9: Review, Brief, and Sign
Have the SWMS reviewed by a competent person. Brief all workers on its contents before work begins. Obtain sign-off from each worker to confirm they understand the hazards, controls, and their individual responsibilities. Make the document readily accessible on site throughout the work.
7 Common Mistakes (And How to Avoid Them)
1. Copy-Pasted Generic Hazards
The problem: Reusing hazard lists from old templates that do not match the specific task, site, or conditions.
The fix: Walk through the specific task mentally or physically and identify hazards that apply to this job, this site, this equipment. A SWMS for installing solar panels on a flat commercial roof is fundamentally different from one for a pitched residential roof, even though both involve working at height.
2. PPE as the Only Control
The problem: Listing “wear safety glasses” or “wear harness” as the sole control for a hazard.
The fix: Apply the hierarchy of controls. What can you eliminate, substitute, isolate, or engineer out before relying on PPE? PPE is always the last resort, never the first or only response.
3. No Residual Risk Assessment
The problem: Assessing inherent risk but failing to re-rate after controls are applied.
The fix: Always calculate residual risk. It demonstrates that your controls actually reduce the risk to an acceptable level. If residual risk is still High or Extreme, your controls are insufficient.
4. Vague Control Measures
The problem: Generic statements such as “workers will be trained” or “safe procedures will be followed.”
The fix: Be specific and actionable. Instead of “workers will be trained,” write “All workers must hold a current Working at Heights certificate (minimum Unit Standard 23229) and have completed site-specific induction within the last 12 months.”
5. No Responsible Person Assigned
The problem: Listing control measures without specifying who implements and monitors them.
The fix: Assign a role to every control measure. Accountability drives compliance. If nobody is responsible, nobody acts.
6. Missing Legislation References
The problem: Not referencing the specific acts, regulations, or standards that apply to the work.
The fix: Include relevant sections of HSWA 2015, WHS Regulations, applicable AS/NZS standards (e.g., AS/NZS 1891 for fall arrest, AS/NZS 3012 for electrical safety on construction sites), and approved codes of practice.
7. Write and Forget
The problem: Creating the SWMS and never reviewing or updating it.
The fix: Review the SWMS before each shift, after any incident or near miss, and whenever site conditions change. A SWMS is a living document, not a filing exercise.
Quick Reference Checklist
Before you finalise your SWMS, verify that:
- Task description is specific to this job and site
- Work steps are listed in logical, sequential order
- Each step has identified hazards relevant to the specific conditions
- Inherent risk is rated using the 5x5 matrix
- Each hazard has controls from at least 2 hierarchy levels
- PPE is never the sole control measure
- Residual risk is calculated after controls are applied
- No residual risk is rated Extreme
- Responsible persons are assigned to every control
- Applicable legislation and standards are referenced
- Emergency procedures are documented and site-specific
- Sign-off section is ready for all workers
Writing a thorough SWMS manually takes 1–3 hours for a complex task. That time is well spent when it protects workers from serious injury. But if you want the same quality in a fraction of the time, there is another option.
Generate Your SWMS in 60 Seconds
SafeMethod AI creates task-specific SWMS documents with proper hazard analysis, risk ratings, and hierarchy of controls — automatically. Describe your task and get a compliant document in about a minute.
Generate Your First SWMS FreeNo credit card required. 3 free SWMS per month.