Cross-State Working

Plenty of tradies work across borders — a Sydney builder picking up a job over the QLD line, a Melbourne sparky following a client interstate. The systems are broadly harmonised, but there are real traps in which licence carries over, which Security of Payment Act applies, which workers' comp scheme covers a worker, and how portable long service transfers. Here is the map. (Confirm specifics with each jurisdiction.)‍‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‍

Your licence — mutual recognition

Under the Mutual Recognition Act 1992 (and Automatic Mutual Recognition), a licence in one state generally lets you obtain the equivalent in another without redoing your qualifications or experience — but it is not automatic. You lodge a written notice with evidence of your current licence and a fee, and most jurisdictions then treat you as "deemed registered" so you can start work while it is processed (still complying with local technical, WHS, contract and insurance laws). The friction points to plan around:

QLD (QBCC) still applies its financial-requirement tests (minimum net tangible assets, reporting) under mutual recognition — an interstate builder can come in under MR but be refused or disciplined for failing the QBCC financials.
WA splits licensing across separate boards (Building Services Board, Plumbers Licensing Board, electrical) each with its own form.
VIC (VBA) recognises interstate licences but checks category fit, fit-and-proper and insurance.

Treat each direction as its own flow. See Mutual Recognition & Working Interstate.

Which Security of Payment Act applies

The applicable SOP Act is the one for the state where the construction work is physically carried out — not where your head office is, and not whichever law governs the contract. All the work in one state means that state's Act, even if the principal is based elsewhere. For a job straddling a border, QLD case law (Lendlease v BCS) holds that the QLD Act applies unless the work is carried out wholly outside QLD — and you do not split the claim by state. Using the wrong Act can render your claim and adjudication void, losing your statutory rights for that period, so identify the physical "principal place of carrying out the work" at tender stage and take advice on genuine cross-border projects. See Security of Payment Explained.

Which workers' comp scheme covers a worker

Every Australian scheme uses a harmonised "state of connection" test, applied in order:

the state where the worker usually works in that employment; failing that,
the state where they are usually based for that employment; failing that,
the state of the employer's principal place of business in Australia.

If none of those resolves it and the worker is injured, the fallback is the state where the injury occurred. Work out each worker's likely state of connection in advance and hold a valid policy in that jurisdiction, keeping evidence (rosters, contracts, usual base). See Workers' Compensation.

Portable long service across schemes

Each state and territory runs its own construction portable-long-service fund (LeavePlus/CoINVEST in VIC, QLeave in QLD, the LSL authorities in the others) under its own legislation — there is no single national fund. The National Reciprocal Agreement means your credits are not lost when you move interstate, but transfer is not automatic: you apply, the schemes cooperate to recognise your earlier service, and each scheme pays its own component at its own rate. Register with the new scheme when you start, and request recognition of your accrued credits from the old one. See Portable Long Service Leave.

WHS across borders

The Model WHS PCBU duty is near-uniform across the harmonised jurisdictions, and you cannot contract out of it: every PCBU in the chain — principal, head contractor, subcontractor, labour-hire — owes its own non-transferable primary duty and must consult, cooperate and coordinate. Bringing in interstate subbies does not reduce the principal contractor's obligations to everyone on site. Watch the real-world differences: different regulators, penalties and enforcement styles; state-specific add-ons (high-risk-work licences, electrical licensing, incident-notification rules); and the fact that some projects and PCBUs fall under the federal Comcare scheme rather than a state regulator. See Model WHS & PCBU Duties.

Common mistakes

Assuming mutual recognition is a rubber stamp everywhere (QLD financials and WA's split boards bite).
Lodging a Security of Payment claim under the wrong state's Act and voiding it.
Holding a workers'-comp policy in the wrong jurisdiction for a cross-border worker.
Expecting portable long service to roll over automatically between schemes.

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