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Workers compensation insurance for Australian residential builders

State-by-state workers comp guide for Australian residential builders: icare NSW, WorkSafe VIC, WorkCover QLD, WA, SA, TAS. Deemed workers, premiums, obligations.

By Dan Waring. Last updated 10 May 2026. Verified 10 May 2026.

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TL;DR

Workers compensation insurance for builders in Australia is mandatory the moment you put someone on wages. Miss it and you face double premiums, personal liability for claim costs, and potential loss of your licence. Schemes are state-based: icare in NSW, WorkSafe in Victoria, WorkCover Queensland, WorkCover WA (via licensed private insurers), ReturnToWorkSA, and scheme administrators in Tasmania, NT, and ACT. Premium for residential builders runs roughly 1.8% to 4.84% of wages depending on the state and your claims history. The contractor-versus-employee line is the sharpest risk: an ABN does not make someone a contractor for workers comp purposes, and sole-trader subbies can be deemed workers if they work mainly for you.

What workers compensation covers

Workers compensation insurance covers your employees (and, in certain situations, your contractors) for:

  • Weekly wage replacement while they cannot work due to a work-related injury or illness
  • Medical and hospital costs including surgery, physiotherapy, and specialist treatment
  • Rehabilitation and return-to-work support
  • Lump-sum compensation for permanent impairment, depending on the state scheme
  • Death benefits to dependants if a worker dies from a work-related cause
  • Common law damages (in states where this applies) for serious injuries involving employer negligence

Workers compensation does not cover self-employed sole traders or business owners who have no employees (they cannot insure themselves under most state schemes). It also does not cover subcontractors who genuinely carry their own business, are not deemed workers, and hold their own policies. For injury to third parties (clients, neighbours), see public liability insurance.

Which scheme covers your business

Each state and territory operates its own scheme. Premium rates, claim processes, and return-to-work obligations differ. The table below covers the essentials for a residential builder.

State / TerritorySchemeGoverning ActHow to insure
NSWicare Nominal InsurerWorkers Compensation Act 1987; Workplace Injury Management and Workers Compensation Act 1998Policy via icare directly
VICWorkSafe VictoriaWorkplace Injury Rehabilitation and Compensation Act 2013Policy via a WorkSafe agent
QLDWorkCover QueenslandWorkers’ Compensation and Rehabilitation Act 2003Policy via WorkCover Queensland
WAWorkCover WA (regulator)Workers Compensation and Injury Management Act 2023Policy via one of 7 licensed private insurers
SAReturnToWorkSAReturn to Work Act 2014Policy via ReturnToWorkSA or a registered claims agent
TASWorkSafe TasmaniaWorkers Rehabilitation and Compensation Act 1988Policy via a licensed insurer (including GIO/AAI)
NTNT WorkSafeReturn to Work Act 1986Policy via a licensed insurer
ACTWorkSafe ACTWorkers Compensation Act 1951Policy via a licensed insurer

NSW: icare

All NSW employers who pay (or are liable to pay) remuneration must hold a workers insurance policy through icare (verified 2026-05-10, icare.nsw.gov.au). The Workers Compensation Act 1987 (NSW) s 20 creates a principal contractor liability: if a subcontractor fails to insure their workers and those workers are injured on your site, the liability falls to you (verified 2026-05-10, AustLII, WCA 1987 s 20). Under s 175B of the same Act, you as principal contractor are also liable for unpaid premiums owed by a subcontractor unless you hold a written subcontractor’s statement covering the period.

For the 2025-26 premium year, NSW froze WIC industry classification rates at 2024-25 levels. The house construction WIC (code 411100) carries a rate of 4.840% of wages (verified 2026-05-10, icare.nsw.gov.au premium rates 2025-26 PDF). From 30 June 2026, all employers must submit an actual wages declaration within four months of their policy period expiring (verified 2026-05-10, icare.nsw.gov.au).

VIC: WorkSafe Victoria

Victorian employers must register for WorkCover insurance if they pay, or are liable to pay, more than $7,500 in remuneration in a financial year, or if they employ an apprentice (verified 2026-05-10, worksafe.vic.gov.au). Registration must occur within 60 days of first meeting eligibility. The scheme average premium rate for 2025-26 is 1.8% of rateable remuneration (verified 2026-05-10, WorkSafe Victoria 2025-26 Premium). For employers with rateable remuneration above $200,000, individual claims history adjusts the rate up or down (verified 2026-05-10, WorkSafe Victoria premium calculation).

QLD: WorkCover Queensland

Queensland employers must take out an accident insurance policy within 5 business days of employing workers (verified 2026-05-10, business.qld.gov.au). The governing legislation is the Workers’ Compensation and Rehabilitation Act 2003. WorkCover Queensland’s target average net premium rate for 2025-26 is $1.343 per $100 of wages, unchanged from 2024-25 (verified 2026-05-10, worksafe.qld.gov.au). Individual industry rates are gazetted annually and vary by classification, with non-residential construction running higher than the average.

WA: WorkCover WA

WA employers must insure with one of seven licensed private insurers regulated by WorkCover WA: Allianz, GIO (AAI Limited), Guild Insurance, CGU, WFI (CGU), QBE, and Zurich (verified 2026-05-10, workcover.wa.gov.au/service-providers/insurers/). The governing legislation changed on 1 July 2024 to the Workers Compensation and Injury Management Act 2023, which also narrowed the deemed worker definition (see below). The recommended average premium rate for 2025-26 is 1.823% of wages, a 5.3% increase from 2024-25 (verified 2026-05-10, WorkCover WA CEO Media Statement, April 2025).

SA: ReturnToWorkSA

South Australian employers register with ReturnToWorkSA under the Return to Work Act 2014. The scheme average rate is approximately 1.85% of remuneration for 2025-26 (verified 2026-05-10, ReturnToWorkSA premium explained). Premiums are calculated on a base premium (remuneration multiplied by industry rate) adjusted for claims history.

TAS, NT, ACT

Tasmania’s scheme is administered by WorkSafe Tasmania under the Workers Rehabilitation and Compensation Act 1988; the Northern Territory by NT WorkSafe under the Return to Work Act 1986; and the ACT by WorkSafe ACT under the Workers Compensation Act 1951. In TAS, NT, and ACT, policies are issued by licensed private insurers including GIO (AAI Limited). Contact each regulator for current industry rates specific to construction.

Premium calculation: the three drivers

Regardless of state, three inputs drive every workers compensation premium.

InputWhat it means
Payroll (rateable remuneration)The total wages, salaries, and super you pay to workers (and in some states, deemed workers). Declare every year, usually in an annual wages declaration.
Industry classification rateThe rate set for your industry by the scheme, based on the aggregate claims experience of all employers in that classification. For house construction in NSW: 4.840% (2025-26). VIC average: 1.8%. QLD average: $1.343 per $100. WA average: 1.823%.
Claims experience (experience rating)In states that apply it, your own claims history adjusts the industry rate up or down. In NSW, this applies when your average performance premium exceeds $30,000. In VIC, it applies above $200,000 rateable remuneration.

If you run your crew lean and safe, your experience factor pulls your rate below the industry benchmark. A significant claim in a small business can push you above it for several years.

The contractor / deemed worker line

This is where builders get caught. Having an ABN does not determine worker status for workers compensation purposes. The classification depends on the nature of the working arrangement, not the contract label.

Sole-trader subcontractor working mainly for you

In NSW, Schedule 1 of the Workplace Injury Management and Workers Compensation Act 1998 lists categories of deemed workers. Under the common law test applied by SIRA, a contractor who works only for one head contractor, uses tools provided by the principal, and does not carry their own business risk is likely to be a deemed worker (verified 2026-05-10, HIA, icare). Their wages must be declared in your premium.

In Victoria, clause 9 of Schedule 1 to the WIRCA 2013 applies an 80% test: if at least 80% of a contractor’s services go to the same principal and at least 80% of their gross income comes from those services, they are deemed your worker, unless WorkSafe determines they carry on an independent trade or business (verified 2026-05-10, WorkSafe Victoria contractor guidance). Residential building subcontractors who work almost exclusively for one builder routinely fall inside this test.

In Queensland, the ATO’s 6-factor common law test is used to determine contractor vs worker. If the ATO factors indicate employment, the person is a worker under WorkCover Queensland. Only individuals (not companies, trusts, or partnerships) can be workers (verified 2026-05-10, worksafe.qld.gov.au).

In WA, the Workers Compensation and Injury Management Act 2023 (operative from 1 July 2024) narrowed the deemed worker definition. Contractors are now only workers if the work they do is not in the course of or incidental to a trade or business they regularly carry on and they perform part of it personally (verified 2026-05-10, jacmac.com.au, WA Act analysis). Trade contractors running their own regular business on ABN in WA are generally not deemed workers under the new Act.

The sham contracting risk

Structuring a genuine employment relationship as a subcontract to avoid workers compensation premiums is sham contracting. The Fair Work Ombudsman and state workers compensation regulators actively prosecute these arrangements. Penalties for sham contracting can reach $82,500 per contravention for corporations, and each pay period of an ongoing arrangement may constitute a separate contravention (verified 2026-05-10, Fair Work Ombudsman media release, March 2026).

What to do

Before classifying any subcontractor, assess the working arrangement against the test in your state. If uncertain, use the SIRA worker-or-contractor tool (NSW), WorkSafe Victoria’s contractor guideline flowchart, or take legal advice. Always obtain a signed subcontractor’s statement (NSW s 175B) or equivalent written confirmation that the subcontractor holds their own policy.

What can go wrong

  • No policy when workers are injured: the regulator steps in, pays the claim, and recovers the cost from you plus a penalty equivalent to double the premium you should have paid. You may also face personal liability.
  • Underdeclaring wages: if you declare a wage bill of $400,000 but the scheme audits and finds $600,000, you owe backdated premium on the difference plus interest and potential penalties.
  • Misclassifying a deemed worker as an independent contractor: if they are injured and found to be a deemed worker, your insurer may refuse the claim, and you become personally liable.
  • Not obtaining a subcontractor’s statement: in NSW, failure to hold a written statement from each subcontractor exposes you to liability for their unpaid premiums under s 175B WCA 1987.
  • Letting your policy lapse: policies renew annually. Missing a renewal while workers are on site leaves you uninsured. Set a calendar reminder 60 days before renewal to review your wages estimate.
  • Wrong WIC code: if icare assigns you to a WIC code with a higher rate than your actual activity warrants, the premium overpays. If you are assigned to too low a code, you may be re-rated on audit. Check your WIC code each renewal against icare’s classification descriptions.

References

See also

Last updated: 2026-05-10. Verified: 2026-05-10. Quarterly review for currency.

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