Contractor Management Software

overlapping PCBU duties contractor New Zealand

Direct answer. When multiple New Zealand persons conducting a business or undertaking (PCBUs) share a workplace or work in a contracting chain, they must consult, cooperate and coordinate about overlapping health and safety duties, so far as reasonably practicable. A contract can allocate tasks, but cannot transfer away a PCBU's legal duty. The practical handover should show which risks each party controls or can influence, what information has been exchanged, who will act on site hazards, how workers are briefed, and how changes and incidents will be escalated. The more influence and control a PCBU has over a matter, the greater its likely responsibility for that matter. WorkSafe: PCBUs working together.

This is a New Zealand shared-duty coordination guide, not a generic contractor software buyer page. The existing NZ contractor-management software page owns that commercial query. Other programme material covers prequalification and document expiry; this article concentrates on the handover and live coordination needed after a contractor is selected.

Identify the PCBUs and the actual overlap

A property owner, tenant, principal contractor, subcontractor and maintenance specialist may all influence work at one place. A contractual chain can create overlap even when the parties do not share the same physical site. WorkSafe gives examples of projects, maintenance, cleaning and transport relationships. Identify each party's work and the risks it creates for its own workers, other workers and the public. WorkSafe contracting guidance.

Then ask who has control or influence over each matter. The client may control access, building services and other occupants. The specialist may control its method, tools, competence and immediate supervision. The site operator may control emergency alarms. These descriptions are starting points, not a rigid legal allocation. WorkSafe says all PCBUs with shared duties remain responsible to the extent they can influence or control the matter, and should make reasonable arrangements so no risk falls between them.

For example, if a contractor is hired to service a rooftop unit at an occupied building, the contractor may design the service method and supply competent technicians. The occupier knows the access route, fragile areas, isolation points and building evacuation system. Each must communicate the information it controls; neither should rely on a clause saying “contractor responsible for all safety” to avoid coordination.

Start coordination before mobilisation

WorkSafe recommends building health and safety into contractor selection and management, not treating it as a document chase after the price is agreed. Ask whether the work can be carried out safely, what hazards are known, what site rules apply, what competencies and equipment are needed, and whether timing or simultaneous operations create risk. Exchange enough information for the contractor to plan the work and for the client to judge its interface with other activities. WorkSafe contracting guidance.

A prequalification certificate or insurance file can support a selection process; it does not reveal a hidden live cable or explain how two teams will share a confined area. Verify competence relevant to the task, assess the method in the actual site context and identify any permits, isolations or specialist controls. Clarify who tells the contractor when the site changes before work begins.

What the handover should cover

A useful handover is proportionate to the work, but commonly records:

The work and boundaries. Location, dates, scope, adjacent activity and any areas off limits.
Known site hazards. Existing plant, traffic, asbestos information where relevant, substances, fragile surfaces, services, public access and emergency arrangements.
Contractor-created risks. Tools, chemicals, access equipment, hot work, isolation, noise, dust, vehicles and subcontractors.
Shared controls. Who provides barriers, isolates services, grants access, supervises work, coordinates simultaneous operations and verifies reinstatement.
Worker briefing. Which people need the information, how they receive it and how they can raise a new hazard.
Change and stop-work route. Who can pause the task, who approves a revised method and how affected PCBUs are told.
Emergency and incident route. Alarm, first aid, evacuation, notification decision and site preservation responsibilities.
Close-out. Handover of inspection results, defects, changed settings, waste, records and remaining hazards.

This is a practical decision record, not a prescribed HSWA form. The evidence should be usable by the supervisor at the workface. A long pack sent by email but not read or reconciled with site reality is weak coordination.

Include a simple contact and escalation table. For each shared control, name the person who can make a decision during the actual shift, not only the contract manager who is available during office hours. If a permit issuer, isolation authority or client representative must be present, check their availability before scheduling the task. A handover that depends on an unavailable person can create pressure to improvise. Keep the table current when personnel change and communicate that change to both teams.

Consult, cooperate and coordinate during the work

WorkSafe distinguishes the words because each contributes: exchange information and views, support each other to manage the risk, and align activities so controls do not conflict. A handover is not a one-off event. If the client changes a delivery route, a contractor brings a new subcontractor or a plant isolation fails, pause and re-coordinate. Agree who updates the method and briefs affected workers. WorkSafe contracting guidance.

Consider a cleaning contractor using a new chemical in a shared building. The contractor needs to assess and control its use and train cleaners; the occupier needs to know where and when it is used, whether ventilation or public access changes, and how an alarm or spill is handled. The PCBU that controls the store cannot assume the other party has inspected it. A brief coordination record should identify decisions and actions, not simply state “all parties consulted.”

Where the risk is material, monitor whether the agreed controls are being used. WorkSafe says contract management can include monitoring and post-contract review. A planned site walk, supervisor conversation or targeted check can find whether barriers, isolation or briefing are effective. Escalate a failure promptly; do not wait until contract close-out to discover the method was different from the one approved.

Worker engagement belongs in the arrangement

Overlapping duties are between PCBUs, but worker experience still matters. Those performing and affected by the work need a chance to raise concerns. A site supervisor may know that a corridor is crowded at shift change; a contractor's operative may know a planned isolation does not match the actual equipment. WorkSafe requires worker engagement and participation practices across PCBUs. Coordinate how feedback from both workforces reaches the decision makers, especially where the work is remote or across shifts. WorkSafe worker-engagement guidance.

Do not use a single contractor sign-in sheet as evidence that every affected worker understood the change. The briefing should suit the risk and the audience. If workers report an unexpected hazard, they must know whom to tell and who can stop or amend the work.

Close-out is part of coordination

When the contractor leaves, the site operator may inherit changed equipment, residual defects or a temporary control. Ask what was completed, what remains, what tests or certificates exist, what services were restored, what waste was removed and whether any change affects future work. The contractor should tell the client about unresolved risk, not just submit an invoice. If a defect remains open, name the owner and interim control. Retain proportionate evidence of decisions and actions for later review.

Common mistakes

Writing “contractor responsible for safety” and assuming the client's overlapping duties disappear.
Checking credentials but never sharing site hazards or simultaneous-work constraints.
Sending a large pack without confirming the workface supervisor has the current version.
Failing to update the handover when the method, subcontractor or site conditions change.
Treating one PCBU's risk assessment as a substitute for all other parties' input.
Leaving temporary barriers, defects or changed equipment with no close-out owner.

Complys and the next step

The existing NZ contractor-management software page is the relevant commercial route for considering how documents and handover evidence are organised. This article does not claim Complys allocates legal duties, automatically verifies competence, monitors the site, approves a method or discharges a PCBU's HSWA responsibility. For one upcoming contract, write a one-page risk-and-control ownership record with the other PCBU, then check whether the people doing the work can explain it.

Primary sources

For the related Complys product, see Contractor Management Software. This guide is general information, not legal advice; verify current requirements against the official sources linked above.