WorkSafe NZ Compliance: SWMS Requirements Explained

WorkSafe New Zealand is the primary regulator responsible for workplace health and safety under the Health and Safety at Work Act 2015 (HSWA). For anyone involved in construction or other high-risk work, understanding what WorkSafe expects -- particularly around SWMS documentation -- is essential to avoiding enforcement action and, more importantly, keeping workers safe.

WorkSafe NZ: The Regulator

WorkSafe was established in 2013 as a Crown entity, replacing the former Department of Labour's workplace safety function. Its mandate expanded significantly with the introduction of HSWA in 2016 (the Act was passed in 2015 and came into force in April 2016).

WorkSafe's powers include:

• Proactive inspections -- visiting workplaces without notice to assess compliance
• Reactive investigations -- investigating notifiable events (deaths, serious injuries, notifiable incidents)
• Issuing notices -- improvement notices, prohibition notices, and infringement notices
• Prosecution -- taking enforcement action through the courts for serious offences
• Enforceable undertakings -- negotiated agreements where a PCBU undertakes specific safety improvements instead of prosecution
• Publishing guidance -- approved codes of practice, good practice guidelines, and industry-specific guidance

WorkSafe employs inspectors with specialist knowledge across industries including construction, manufacturing, extractives, energy, and adventure activities. Construction receives particular attention due to its consistently high injury and fatality rates. For background on the legal duties that WorkSafe enforces, see our guide to PCBU duties under HSWA 2015.

What WorkSafe Expects in a SWMS

While HSWA does not prescribe a specific SWMS format, WorkSafe has clear expectations about what a SWMS should contain. These expectations are derived from the Act's requirements for safe systems of work and from approved codes of practice. A compliant SWMS should include:

1. Document identification

• Title and unique document reference number
• Project name, site address, and client details
• PCBU name and contact information
• Date of preparation and review dates
• Version number (demonstrating the document is actively maintained)

2. Scope of work

• Clear description of the work to be performed
• Specific high-risk construction work activities identified (referencing the 19 HRCW categories where applicable)
• Work area and environmental conditions
• Duration and timing of the work

3. Hazard identification and risk assessment

• Systematic identification of all hazards associated with the work
• Risk assessment using a recognised methodology (typically 5x5 risk matrix)
• Both inherent (uncontrolled) and residual (controlled) risk ratings
• Evidence that the hierarchy of controls has been applied -- not just PPE

4. Control measures

• Specific, actionable control measures for each identified hazard
• Controls drawn from multiple levels of the hierarchy (elimination, substitution, isolation, engineering, administrative, PPE)
• Assignment of responsibility for implementing each control
• Reference to relevant standards, codes of practice, or manufacturer instructions

5. Emergency procedures

• Site-specific emergency contacts and procedures
• Location of first aid facilities, fire extinguishers, and emergency exits
• Evacuation assembly points
• Nearest medical facility

6. Worker sign-off

• Evidence that workers have been briefed on the SWMS contents
• Signatures or digital sign-off from all workers performing the work
• Date of briefing

How Inspections Work

WorkSafe inspections can be either proactive (planned or random) or reactive (in response to a complaint, notifiable event, or intelligence). Inspectors have broad powers under HSWA Part 9, including:

• Entering any workplace at any reasonable time without prior notice
• Inspecting, examining, and making inquiries
• Requiring the production of documents (including SWMS, risk assessments, training records, and incident reports)
• Taking photographs, measurements, and samples
• Interviewing any person at the workplace
• Requiring the workplace to remain undisturbed for investigation purposes

A typical construction site inspection follows a pattern:

1. Arrival and introduction -- the inspector identifies themselves and explains the purpose of the visit
2. Document review -- requesting the site safety plan, SWMS for current work, hazard register, training records, and incident reports
3. Site walk-through -- observing work in progress, checking controls against SWMS, identifying hazards that may not be documented
4. Worker interviews -- talking to workers to verify they have been briefed on the SWMS, understand the hazards, and know the emergency procedures
5. Debrief -- discussing findings with the PCBU or site manager, issuing any notices

Common Enforcement Actions

WorkSafe's enforcement approach follows a graduated model, from education and guidance at the low end to prosecution at the high end:

The most common enforcement actions on construction sites relate to:

• Inadequate or absent fall protection (the single most common issue)
• Missing or insufficient SWMS for high-risk work
• Failure to isolate energy sources during maintenance
• Inadequate scaffolding or temporary structures
• No evidence of worker consultation or briefing on safety procedures

How to Prepare for an Inspection

The best preparation for a WorkSafe inspection is to run your site as if an inspector could arrive at any moment -- because they can. Specific preparation steps include:

1. Keep SWMS accessible on site -- not in a head office filing cabinet, not on someone's laptop that is not on site. The SWMS for current work must be physically available where the work is being performed.
2. Ensure SWMS are current -- an outdated SWMS is almost as bad as no SWMS. If site conditions have changed, the SWMS must reflect the current situation.
3. Verify sign-off records -- can you demonstrate that every worker on site has been briefed on the relevant SWMS? Digital sign-off systems make this significantly easier to manage than paper.
4. Walk your own site -- before an inspector does. Compare what you see on the ground to what your SWMS says. Are the controls actually implemented? Is edge protection in place? Are exclusion zones maintained?
5. Brief your team -- workers should know what SWMS applies to their work, where to find it, and what to do if conditions change.
6. Maintain training records -- current Working at Heights certificates, first aid certificates, equipment competency records, and site induction records.
7. Have incident records available -- hazard reports, near-miss records, incident investigations, and corrective actions taken.

For details on when a SWMS is legally required, including the 19 categories of high-risk construction work, see our dedicated guide.

Approved Codes of Practice

WorkSafe publishes Approved Codes of Practice (ACOPs) under section 222 of HSWA. While not legally binding in themselves, ACOPs represent the accepted standard of compliance. If you follow an ACOP, you are considered to have met the relevant duty under the Act. If you deviate from an ACOP, you must demonstrate that your alternative approach provides at least an equivalent level of safety.

Key ACOPs relevant to SWMS and construction include:

• Managing Risks of Falls in Workplaces -- detailed guidance on fall prevention, edge protection, scaffolding, and harness systems
• Excavation and Shoring -- requirements for trench work, shoring, and benching
• Managing Risks of Hazardous Substances in the Workplace -- chemical handling, storage, and exposure controls
• Construction Work -- general construction risk management, including guidance on SWMS preparation

Where to Find Official Guidance

WorkSafe provides free guidance materials at worksafe.govt.nz, including:

• Good Practice Guidelines (GPGs) -- practical guidance for specific industries and hazard types
• Quick Guides -- one-page summaries for common hazards and tasks
• Factsheets -- concise information on specific topics (asbestos, noise, manual handling)
• Case studies -- real enforcement outcomes with lessons learned
• Toolbox talks -- pre-prepared briefing materials for site use
• Notification forms -- for reporting notifiable events

All WorkSafe publications are free to download and use. There is no excuse for not knowing the current requirements -- the information is readily available and written in plain language.