Coordinate permit-to-work interfaces on a New Zealand construction site

A permit can be complete for one contractor and still fail at the boundary with another crew. A hot-work area may overlap temporary electrical work; an excavation permit may affect vehicle access. The coordination task is to know which activities are active, what each permit controls, who can change conditions and how the next crew receives the handover.

This guide concerns New Zealand construction sites with multiple PCBUs. WorkSafe's advice on PCBUs working together when contracting explains consultation, cooperation and coordination where duties overlap. A permit-to-work system is a control method chosen for particular high-risk tasks; do not imply that one universal permit form or interval is required by HSWA for every task. Check the specific work regulations and site procedure.

Map the interfaces before issuing permits

List today's work areas, contractors, activities, isolations, access routes and potential simultaneous operations. Identify who controls the site, equipment and each hazard. A permit issuer needs to see the neighbouring permits, not just the applicant's method statement. The interface map should point to the current drawings and site safety plan, with a clear location and timeframe.

Agree which PCBU communicates a change to others. Where two jobs depend on the same isolation, note who owns it, what may be altered and who authorises restoration. A crew must not assume an isolation remains in place because a permit record says it was active earlier. Verify the actual condition before work and again after an interruption.

Define status in operational terms

Use statuses such as requested, reviewed, issued, active, suspended, handed over and closed, but define what each means at the site. “Issued” does not necessarily mean the area is ready for entry; pre-start checks may remain. A suspended permit should make the hazard and restart conditions visible. A closed permit should have confirmation that the area, plant and barriers were returned to an agreed state.

Record issuer, receiver, date, scope, controls, linked permits, sign-offs and any conditions. Include the person who checks conflicting work and how a new contractor is informed. If a permit changes, preserve the earlier version. A dashboard that merely shows a green badge is insufficient when the field team cannot see the control it represents.

Brief the work parties together

Hold an interface discussion when activities can affect one another. Ask each supervisor to explain how their work may change access, energy isolation, air quality, lifting or emergency arrangements for others. Agree a contact and stop-work route. WorkSafe's overlapping-duties guidance emphasises that one PCBU cannot contract out its own duties simply by passing a document to another.

Keep the briefing relevant. A general site induction may explain rules but not today's simultaneous work. If a crane operation starts beside a confined-space entry, the permit owners need a specific decision about exclusion, communication and emergency response. Record the outcome and the people who must act on it.

Handle changes and handovers

At a shift change, capture the condition left behind, live isolations, open excavations, suspended permits and work that must not restart. The incoming supervisor should accept the handover after checking the area. If the scope or hazard changes, suspend affected permits and revise the method before continuing. An informal verbal instruction can be recorded, but it should not silently override a written permit's control.

After work, confirm that tools and people are clear, guards or covers restored, temporary services safe and affected PCBUs informed. Do not close a permit only because its scheduled end time has passed. If a follow-on crew depends on the completed work, record its acceptance of the condition.

Example: electrical and hot work

One contractor is replacing a switchboard while another plans welding nearby. Their permits intersect through power isolation, fire risk and emergency access. The site coordinator identifies the overlap, sets a sequence, confirms which isolation remains active, briefs both crews and records the handover when the electrical work ends. If welding conditions change, the hot-work permit is suspended and reviewed. Separate signed forms without the shared decision would not demonstrate coordination.

The mapped Complys NZ health and safety page is the product page for evaluating record workflows. The existing HSWA PCBU duties guide covers broad legal duties. This page owns the permit-status interface and handover task. No software is said to issue a legal permit or verify an isolation physically.

Test one interface before the shift begins

Choose a representative overlap and ask both permit holders to describe the boundary. For example, who may re-energise a temporary supply while the other team is working nearby? If the answers differ, suspend the affected activity until the site coordinator resolves the conflict. Record the decision in both permit records so one crew does not keep an older version. The test is especially useful when the permit system is digital but contractors still work from printed copies.

A permit register should also show work that was rejected or postponed. That history can explain why a high-risk activity did not occur as scheduled. Record the reason, revised conditions and person who will review it again. Avoid closing a rejected permit as if the work were completed; that can distort later audits and conceal an unresolved hazard.

After each interface meeting, identify one person responsible for updating the shared permit view. If several contractors maintain separate lists, reconcile them at the start of the shift. A stale permit status can be worse than no dashboard because it gives a false impression that isolation or access conditions are still in place.