Business Insurance for Contractors and Subcontractors: What You Actually Need

Business Insurance for Contractors and Subcontractors: What You Actually Need

Start with the insurance clause in the contract, not a generic policy name. A contract can require public liability and contract works insurance, while workers compensation and residential home warranty cover may add separate legal obligations. The practical question is not “What do contractors usually buy?” but “Who must hold this cover, for which part of the work, and under which state or territory law?” Read the contract before signing, identify every subcontractor in the chain, and check the rules for the place where the work is performed. Different parties and legal layers may apply, so policy selection should follow those identified duties rather than a generic bundle. The examples below use Queensland, New South Wales and Western Australia for their different published requirements. Elsewhere, use the relevant state or territory law and contract; do not import another jurisdiction’s thresholds.

What does the contract require?

The Queensland Building and Construction Commission (QBCC) says insurance responsibilities should be discussed before a contract is signed. Its guidance says a contract could require public liability, especially before work starts, and that most contracts require the contractor to have both public liability and contract works insurance. Those are not universal contract terms: the actual agreement determines what the parties have committed to.

For a principal contractor, turn that clause into a responsibility map. Identify the named policy holder, the work or site to which the cover relates, and the point in the project when the requirement applies. Record which obligations sit with the principal and which sit with each subcontractor. The QBCC also tells the contract customer to check that the contractor has met the insurance obligations in the contract. Make that check part of the pre-signing review, while keeping each lower-tier contract aligned with the principal’s stated requirements.

Is public liability contractual, legal or both?

Public liability is not a catch-all name for construction insurance. Business.gov.au says it covers you if someone dies, is injured, or has property damaged because of your negligence. It also says some states and territories may require public liability for certain occupations. The applicable occupation and location therefore matter; this is not a nationwide rule for every contractor.

The QBCC gives a construction-site context: public liability can protect you from serious financial loss if a person is injured or killed, or their property is damaged while on site. A contract can also require it, particularly before work starts. Check both questions: does the contract require it, and does the law of the state or territory where the work occurs require it for the occupation? Read the wording rather than relying on a product label.

Business.gov.au separately lists third-party personal injury insurance if the business uses motor vehicles. If that applies, check it alongside public liability rather than assuming the two requirements are interchangeable.

What does contract works insurance add?

Contract works insurance has a separate role in the QBCC guidance and is also called construction works insurance. It applies throughout the construction period until handover. The QBCC describes it as covering the site and materials against theft, vandalism, fire, storm and similar risks. This makes it the cover to investigate when the contract expressly names contract works, rather than treating public liability as a substitute merely because both policies relate to a construction project.

If public liability or contract works appears in the contract, check that the named contractor has met that obligation. For a principal contractor, identify which entity must hold the policy, when the requirement begins, and how that duty is passed to subcontractors. For a subcontractor, compare the insurance clause in its own contract with the principal’s stated requirements. Match the contract wording to the separate risks described by the QBCC, then verify compliance before relying on the arrangement.

What does Queensland home warranty require?

For residential construction in Queensland, home warranty cover is a separate legal requirement, not simply another policy a principal may request under the construction contract. The QBCC says cover under the Queensland Home Warranty Scheme is mandatory for all residential construction work performed in Queensland. Under its home-warranty guidance, the building contractor takes out the cover on the homeowner’s behalf, collects the premium with the deposit and pays it to the QBCC.

The QBCC says the scheme protects the homeowner if the contractor fails to complete the work or rectify defects. The premium is based on the insurable value of the work. Once the premium is paid, QBCC sends a Notice of Cover to the homeowner. If the residential work requires building approval, the homeowner needs to provide the Notice of Cover to the certifier so the certifier can issue the approval and approved plans.

Keep this statutory process separate from the contract’s public liability and contract works requirements. On a Queensland residential project, ask for the Notice of Cover as part of the project file. In another state or territory, check the local law and contract for the applicable home warranty or domestic building insurance requirements; Queensland’s process and local thresholds should not be carried across borders.

How are workers compensation checks carried down the chain?

Business.gov.au says the law may require insurance depending on the type of business and lists workers compensation insurance where the business has employees. SafeWork NSW gives a more detailed rule for a principal contractor: make sure each subcontractor takes out appropriate workers compensation cover for its workers.

The principal must also check that premium payments are up to date, the subcontractor is classified in the correct industry and an appropriate amount of wages is declared for coverage. The NSW check extends to obtaining a signed statement declaring that there are no outstanding liabilities and that all workers compensation premiums applicable for the work have been paid. SafeWork NSW identifies the State Insurance Regulatory Authority as the agency responsible for workers compensation.

That is the NSW statutory checklist; it is not a substitute for the law in another state or territory. The important distinction is between holding the relevant cover and checking that a subcontractor’s cover is appropriate and current. Build the listed NSW checks into the contract review and evidence request. If the work is elsewhere, apply the requirements of the state or territory where it is performed.

When can principal and subcontractor liability overlap?

SafeWork NSW’s principal-contractor duty concerns checking workers compensation cover. WorkCover WA addresses a different issue: legal liability for compensation after a worker is injured. Under the WorkCover rule, if a contractor has contracted with a principal to execute work by or under that contractor, both the principal and contractor are taken to be employers of the worker. Both are jointly and severally liable to pay the compensation the contractor would owe if it were the sole employer.

That does not make the principal liable on every worksite. WorkCover says the principal is liable only when both conditions are met: the work being done at the time of injury is directly part of, or a process in, the principal’s trade or business; and the injury arises in respect of premises on which the principal has undertaken to do the work, or that are otherwise under the principal’s control or management. WorkCover also says this liability applies right down the contractual chain.

Do not blend the NSW insurance-checking duty with the WA compensation-liability rule. They address different problems and jurisdictions. Identify the actual contractual chain and apply the published rule for where the work is performed; a contract label alone is not a substitute for that check.

What should you check before work starts?

Use the contract and the applicable state or territory rules to create a project file. For contract cover, record the required policy, named holder and evidence received. On a Queensland residential job, keep the Notice of Cover and provide it to the certifier if building approval is required. For a NSW principal, check appropriate workers compensation, current premiums, correct industry classification, appropriate declared wages and the signed statement about liabilities and paid premiums. For a WA principal, keep the contractual chain clear enough to assess the WorkCover test, including the nature of the work and control of the premises.

Then use this checklist:

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