Third-Party Liability Insurance

Third-Party Liability Insurance (also called public liability or third-party indemnity insurance) covers a contractor, consultant, or supplier against legal claims brought by persons who are not party to the contract but who suffer bodily injury or property damage as a result of the insured's activities during the project.

What is Third-Party Liability Insurance?

During construction or service delivery, third parties, such as members of the public near a site, neighbouring property owners, or road users affected by construction traffic, may be injured or have their property damaged by the contractor's operations. Third-Party Liability Insurance pays the legal defence costs and any damages awarded against the contractor in such cases, up to the policy limit.

Development bank standard contracts, including those based on FIDIC forms, require third-party liability cover to be maintained from commencement of work to the end of the defects-liability-period. The minimum indemnity limit is stated in the contract's insurance-requirements schedule and is calibrated to the nature and scale of the works: a small advisory contract carries a much lower limit than a major infrastructure project near populated areas.

This cover is separate from professional-indemnity-insurance, which addresses economic losses from professional errors, and from construction-all-risk insurance, which covers physical damage to the works themselves. Together, these three form the core insurance suite for most international construction and consulting contracts.

Why Third-Party Liability Insurance matters for bidders

A contractor must confirm that its third-party liability policy covers the project jurisdiction, includes the minimum limit required, and can name the employer as an additional insured, which is standard practice in development-bank-financed projects. Jurisdictional exclusions are a real issue: some insurers exclude high-risk countries, and a contractor that discovers this limitation after winning the contract faces an expensive policy amendment or a gap in required coverage. The practical discipline is to run a quick insurance-availability check alongside the bid-no-bid analysis for any project in an unfamiliar jurisdiction.

FAQ

What is the difference between third-party liability insurance and employers' liability insurance?

Third-party liability covers claims by members of the public or other external parties; employers' liability (also called workers' compensation in some markets) covers claims by the contractor's own employees for workplace injuries.

Does the insurance need to cover the whole construction period?

Yes, third-party liability cover must be continuous from site mobilisation through to the end of the defects liability period, because third parties can be affected by remedial works carried out during that period as well.

What indemnity limit is typically required in international contracts?

Indemnity limits vary widely depending on project scale and risk, ranging from USD 1 million per occurrence for small contracts to USD 50 million or more for major infrastructure near dense populations; the required limit is always stated in the contract's particular conditions or insurance schedule.