Article
Public and Products Liability Insurance for Australian Contractors: Limits, Extensions and Exclusions
Topic
Commercial InsuranceAuthor
Cooper StewartA guide to public and products liability insurance for Australian construction, civil and mining contractors and their suppliers — how the two covers differ, what limits contracts specify, what principals require beyond the limit, and the exclusions that decide what is covered.
On an Australian construction project or mine site, the liability certificate is usually the first insurance document a principal asks to see, and often the condition of getting through the gate. The required limit is written into the contract, the certificate is checked against it, and the conversation tends to stop there.
The limit is the easy part. Whether the policy behind the certificate answers the contract — the extensions principals require, the indemnities the contractor has given, and the exclusions that apply to the work actually being done — is where liability programs differ. This guide sits within BCS Broking's broader coverage of commercial insurance for Australian construction and mining. A note on roles: cover is provided by APRA-regulated underwriters; BCS arranges and structures it. BCS is the broker, not the risk carrier.
One distinction runs through everything below. Public liability responds to injury to third parties and damage to their property. It does not cover damage to the works the contractor is building, which is first-party cover under a separate contract works policy.
Who is this for?
Commercial managers, finance directors and contract administrators at Australian construction, civil, mining services and engineering contractors, typically turning over $20M or more, and at the fabricators, manufacturers and suppliers that sell into those industries. It applies equally to head contractors setting requirements for subcontractors and to subcontractors meeting them.
What is the difference between public liability and products liability?
They are usually written together, in a single combined policy often called broadform liability, but they respond to different things.
| Public liability | Products liability | |
|---|---|---|
| What it responds to | Injury or property damage caused by the business's activities | Injury or property damage caused by goods the business sells, supplies, installs, erects or repairs |
| Construction example | A falling object from scaffolding injures a passer-by | A fitting installed last year fails and floods a tenant's premises |
| How the limit applies | Per occurrence | Per occurrence and in the aggregate for the policy period |
| When it typically matters | During the works | After handover, and for the life of supplied products |
For contractors, the products section is not only about manufactured goods. Work that has been completed and handed over is commonly treated as a product, so a defect that later causes injury or damage to someone else's property generally falls to the products cover. Because the products limit is usually an annual aggregate, a series of claims in one year can exhaust it.
Liability policies are generally written on an occurrence basis: they respond to injury or damage that happens during the period of insurance, whenever the claim is later made. That is different from professional indemnity, which is claims-made, and it is one reason continuity of liability cover after a project finishes matters.
How much public liability cover do contractors need?
The contract normally decides. As a general pattern in the Australian market, $20M is a common minimum on smaller commercial works, $50M is common on larger construction projects and most mine sites, and major infrastructure and rail projects often require more, frequently met by adding excess or umbrella layers above a primary policy.
The contract figure is a minimum, not a measure of exposure. A contractor's own worst case — damage to an adjoining building during excavation, a fire spreading from hot work, a strike on a major underground service — is a better test of whether the limit is adequate. Government and Tier 1 requirements are set out in more detail in insurance requirements for government construction contracts.
What do contracts require beyond the limit?
Principals rarely stop at a dollar figure. Head contracts and mine-site contractor requirements commonly specify:
- The principal noted on the policy as an insured or interested party, for liability arising from the contractor's work.
- A principal's indemnity extension, under which the policy indemnifies the principal for its liability arising out of the contractor's work, to the extent the contract requires.
- A cross-liability clause, so that each insured is treated as if separately insured and a claim by one against another is not excluded.
- A waiver of subrogation in favour of the principal, where the contract requires it.
- A minimum insurer rating and an Australian-regulated insurer.
- Notice of cancellation or material change to the principal.
- Products and completed-operations cover maintained for a stated number of years after practical completion.
- A certificate of currency before mobilisation, and on each renewal.
Where a principal runs a project-wide program, some of this changes, but not all of it. How principal-arranged programs interact with a contractor's own cover is set out in principal-arranged vs contractor-arranged insurance.
Where does contractual liability create a gap?
Liability policies cover legal liability. Construction and mining contracts often go further, requiring the contractor to indemnify the principal on terms broader than the law would otherwise impose — sometimes for losses the principal contributed to, or regardless of fault.
Most liability wordings exclude liability assumed under contract, except to the extent the contractor would have been liable anyway or the policy specifically extends to it. The result is an indemnity the contractor has signed but its policy only partly answers. It is a contractual issue, and it is easier to address when the indemnity clause is reviewed before signing than when a claim arrives.
Which exclusions matter most for construction and mining contractors?
| Exclusion or restriction | What it means | How it is usually handled |
|---|---|---|
| Damage to the works and faulty workmanship | The cost of rectifying the contractor's own defective work is excluded; resulting damage to other property may be covered | Contract works for the works; quality control for workmanship |
| Professional liability | Liability for design, advice or specification | Professional indemnity |
| Property in care, custody or control | Damage to property the contractor is working on or holding | Often an extension with a sub-limit |
| Underground services | Damage to pipes, cables and mains below ground | Frequently sub-limited or subject to a higher excess, with service-location conditions such as Before You Dig Australia enquiries |
| Vibration, removal or weakening of support | Damage to neighbouring property from piling, excavation or demolition | Often restricted; needs to be confirmed for the work type |
| Pollution | Contamination of land, air or water | Gradual pollution generally excluded; sudden and accidental cover more common; environmental liability for the rest |
| Asbestos | Injury or damage arising from asbestos | Generally excluded |
| Injury to own workers | Employees of the insured | Workers' compensation and employer's liability |
| Registered vehicles, aircraft and watercraft | Liability arising from their use | Motor, aviation and marine policies |
| Exports to North America | Products sold into the United States or Canada | Often excluded or separately rated |
Conditions can matter as much as exclusions. Hot work permits, service-location requirements and subcontractor insurance checks are commonly written as conditions, and a breach can affect how a claim is treated. Mining operators should also confirm how the policy treats underground operations, which some wordings exclude or restrict.
What do suppliers and fabricators need to know about products liability?
Businesses that make, import or supply goods into construction and resources carry a products exposure that outlasts any contract. Three points recur.
Importers can be treated as the manufacturer. Under the Australian Consumer Law, a business that imports goods can be treated as their manufacturer where the maker does not have an office in Australia, as the ACCC explains in its guidance on product safety laws and liability. That brings the manufacturer's liability exposure onshore, to the importer.
Performance failure is generally not covered. Products liability responds to injury or damage to other property. A product that simply fails to do what it was sold to do — the efficacy or failure-to-perform exposure — is generally excluded.
Recall is a separate cover. The cost of withdrawing or replacing a defective product line is not covered by products liability and needs product recall insurance if it is to be insured at all.
A checklist before renewal or tender
- Compare the policy limits against the highest limit required by contracts the business intends to bid over the next twelve months.
- Confirm the principal's indemnity extension, cross-liability and waiver of subrogation match the contract wording.
- Check the products aggregate against the volume and value of completed work and supplied goods.
- Review the underground services, vibration and care, custody and control sub-limits against the work actually performed.
- Identify contract indemnities broader than legal liability and raise them before signing.
- Confirm subcontractors' certificates of currency meet the requirements passed down to them.
- Where the business exports, confirm the territorial and jurisdiction limits, particularly for North America.
FAQ
What does public liability insurance cover for contractors?
It covers the contractor's legal liability to pay compensation for injury to third parties and damage to their property arising from its business activities, including legal costs of defending a covered claim. It does not cover damage to the contract works themselves, injury to the contractor's own workers or the cost of fixing its own defective work.
What is the difference between public liability and products liability?
Public liability responds to injury or damage caused by the business's activities, generally per occurrence. Products liability responds to injury or damage caused by goods supplied or work completed and handed over, usually with an annual aggregate limit as well as a per-occurrence limit.
How much public liability insurance do contractors need?
The contract usually specifies the minimum. As a general pattern, $20M is common on smaller commercial work, $50M on larger construction projects and most mine sites, and more on major infrastructure. The contractor's own worst-case exposure is a better test of adequacy than the contract minimum.
What is broadform liability insurance?
A combined policy that covers both public and products liability, typically on an occurrence basis, with broader definitions than a basic public liability policy. It is the usual structure for established contractors.
What is a principal's indemnity extension?
An extension under which the contractor's liability policy indemnifies the principal for the principal's liability arising out of the contractor's work, to the extent the contract requires. Head contracts and mine-site contractor requirements commonly specify it.
Does public liability cover the works a contractor is building?
No. Damage to the works under construction is first-party cover under a contract works policy. Public liability responds to third parties and their property.
Does public liability cover faulty workmanship?
The cost of rectifying the contractor's own defective work is generally excluded. Damage the defect causes to other people's property, or injury it causes, may be covered, subject to the wording.
Do subcontractors need their own public liability if the principal has a project policy?
Usually yes. A principal-arranged program may cover site works for all parties, but subcontractors generally still hold their own liability cover for off-site and non-project activities, and many contracts require it regardless.
Where to next
This article sits within BCS Broking's broader commercial insurance for Australian construction and mining coverage. To go deeper:
- Public and products liability sets out how BCS structures liability programs
- Construction and infrastructure insurance covers the wider construction program
- Contract works insurance in Australia covers damage to the works themselves
- Mining contractor insurance covers the full program for mining services companies
- Principal-arranged vs contractor-arranged insurance covers project-wide programs
For general background, business.gov.au summarises the main business insurance types, and the National Insurance Brokers Association publishes guidance on working with a broker.
If you would like your liability program checked against the contracts you need to answer, contact BCS Broking. BCS acts as a specialist broker and negotiates across the market as the client's dedicated advocate.
This information is general in nature and does not consider any specific objectives, financial situation or needs. Consider whether the information is appropriate before acting on it. Policy terms vary between underwriters — what a specific program covers is determined by its wording. Cover is provided by APRA-regulated underwriters; BCS Broking Pty Ltd is an authorised insurance broker and arranges and structures the cover (AFSL details on the Financial Services Guide).
