When a SWMS is required on a construction site
A safe work method statement is required for high risk construction work under the model WHS Regulations. On a typical construction site, several activities can trigger the requirement at once, including a risk of falling more than 2 metres, work in or near a trench deeper than 1.5 metres, demolition of load-bearing elements, work likely to disturb asbestos, and work in areas where powered mobile plant is moving.
The SWMS must be prepared before the high risk work begins. Where multiple high risk activities are carried out, a single SWMS can cover them or separate SWMS can be prepared for each activity. The PCBU must ensure the SWMS is understood, implemented, and reviewed as conditions change.
Common construction hazards
Construction sites combine moving plant, manual handling, work at height, and exposure to noise, dust, and weather. Falls from height and contact with moving plant are among the most frequent causes of serious injury and fatality. Other hazards include collapse of partially built structures, falling material, electrical services, and the presence of other contractors or the public on site.
Each hazard should be matched to a specific control rather than listed in isolation. The SWMS should describe how exclusion zones, traffic management, edge protection, and safe handling are implemented, and who is responsible for checking them before work starts each day.
Control measures and supervision
Controls should be selected using the hierarchy of control, starting with elimination. The SWMS should record the control for each task step, the legislation and codes of practice it references, and the competencies required for the work. Pre-start meetings and daily checks help confirm that controls are in place before work begins.
The document should also cover how the work is supervised, how controls are checked, and what happens if conditions change. SOPs for specific tasks or equipment support the SWMS by giving workers practical step-by-step operational instructions.
SWMS structure and worker briefing
A useful construction SWMS sets out the work step by step, identifies the hazard at each step, and names the control. It should include space for site-specific details such as the worksite address, principal contractor, and emergency procedures, so the document fits the actual job.
Workers must be briefed on the SWMS and their agreement recorded before high risk work begins. The SWMS should be accessible on site and reviewed when the work or conditions change, or if an incident occurs.