Health and safety on earthworks sites is not simply a matter of compliance. It shapes how efficiently a project runs, how well risks are managed, and whether the site is safe for everyone working on or near it. For councils, government agencies, and larger developers engaging earthworks contractors in Auckland, understanding what good H&S practice looks like, and knowing what to ask for, helps ensure the right contractors are selected and the right standards are maintained throughout the project.
Here’s what you should expect from a professional earthworks contractor when it comes to health and safety on a construction site.
SiteWise and SiteSafe: Industry Accreditation Matters
New Zealand’s construction sector has well-established prequalification and accreditation systems designed to verify that contractors have appropriate H&S systems in place before they set foot on site. SiteWise is the most widely used prequalification tool in the New Zealand construction industry, providing principal contractors and clients with a graded score based on a contractor’s H&S documentation, systems, and track record.
SiteSafe New Zealand is the industry body that promotes safety culture across the construction sector and administers site safety card programmes. Contractors who are members of SiteSafe demonstrate a commitment to ongoing safety training and industry best practice.
When engaging an earthworks contractor for any significant project, asking for evidence of SiteWise registration or SiteSafe membership is a reasonable starting point. These accreditations signal that the contractor takes H&S seriously beyond simply having a folder of documents.
The Health and Safety at Work Act 2015
All earthworks contractors operating in New Zealand are bound by the Health and Safety at Work Act 2015 (HSWA). Under the HSWA, contractors are classified as Persons Conducting a Business or Undertaking (PCBUs) and have a primary duty of care to ensure that their work does not put workers or others at risk, so far as is reasonably practicable.
On construction projects with multiple contractors on site, the HSWA also requires PCBUs to coordinate H&S responsibilities between them. This means the principal contractor and subcontractors, including earthworks contractors, must communicate clearly about hazards, controls, and emergency procedures so that nothing falls through the gaps.
For developers and councils acting as principals, understanding that H&S responsibility is shared under the HSWA is important. Principals have obligations to ensure that the contractors they engage are competent and operating safely.
Hazard Identification and Site-Specific Safety Plans
Before earthworks commence on any project, a competent contractor should be able to demonstrate that they have identified the key hazards associated with the specific site and put controls in place to manage them. Common earthworks hazards include:
- Excavation collapse and ground instability, particularly in trenching work, deep cuts, or on sites with unstable soils
- Underground services, buried power cables, gas lines, water pipes, and telecommunications infrastructure that can be struck during excavation
- Plant and pedestrian interaction, excavators and trucks operating in proximity to workers on foot
- Overhead powerlines, particularly on rural sites where lines may not be clearly marked
- Noise, dust, and vibration affecting workers and nearby residents or occupants
- Slips, trips, and falls on uneven terrain or around open excavations
A site-specific safety plan (or task analysis) should address each relevant hazard and specify the control measures in place. For larger or more complex projects, a full Health and Safety Management Plan submitted to the principal contractor is standard practice.
Excavation and Trench Safety
Trench collapses are one of the most serious risks in earthworks. The force exerted by collapsing soil is significant enough to be fatal, and the speed at which a collapse can occur leaves little time to react. New Zealand’s WorkSafe guidelines and the relevant industry codes of practice set out minimum requirements for trench support, battering of excavation faces, and the use of trench shields or boxes in appropriate situations.
Any earthworks contractor carrying out trench work, whether for pipes, foundations, drainage, or services, should be able to demonstrate that their operators are trained in excavation safety and that appropriate controls are applied based on soil conditions and trench depth.
Plant Safety and Operator Competency
Earthmoving machinery, excavators, bulldozers, trucks, and compaction equipment, presents significant hazards when not operated safely. Exclusion zones around operating plant, clear communication between operators and ground workers, and the use of spotters when machinery is operating near hazards or in restricted spaces are all standard requirements on well-run sites.
Operators should hold appropriate training certifications for the equipment they are using. Under New Zealand’s HSWA and WorkSafe guidance, employers have a duty to ensure that workers are trained and competent before operating plant.
What to Ask Your Earthworks Contractor
When engaging an earthworks contractor for a significant project, particularly as a council, government agency, or commercial developer, the following questions help establish their H&S capability:
- Are you registered on SiteWise, and what is your current score?
- Are you a SiteSafe member?
- Can you provide a copy of your H&S Management Plan or site-specific safety plan for this project?
- How do you manage underground service identification before excavation begins?
- What is your process for trench and excavation safety?
- Are your operators trained and certified for the equipment they will be using?
- How do you manage plant and pedestrian interaction on a shared construction site?
A professional contractor will be able to answer these questions clearly and provide documentation to support their responses.
Procut Earthworks: A Safety-Focused Contractor
At Procut Earthworks, health and safety is integrated into how we plan and carry out every project. We are SiteSafe members, and our team is trained to operate safely in the varied and sometimes challenging conditions that characterise Auckland’s construction sites. From residential site excavation through to house site preparation and bulk earthworks for larger developments, we bring the same H&S standards to every job, regardless of project size.
If you’re a developer, council, or principal contractor looking for an earthworks team with strong H&S credentials and a track record of reliable, professional work across Auckland, get in touch with Procut Earthworks to discuss your project requirements.