Contractual liability
Contractual liability is responsibility you accept for another party through a written or oral agreement, such as a hold-harmless or indemnity clause. A liability policy may cover it when the agreement qualifies as an insured contract, and may exclude promises outside that definition, subject to its endorsements, limits, and state law.
Also called: hold harmless agreement, hold-harmless clause, indemnity agreement
When a lease, subcontract, or customer agreement asks you to hold the other party harmless or indemnify them, you are taking on contractual liability. Your insurance does not automatically follow that promise. It pays only when the obligation fits the policy's wording, usually its definition of an "insured contract," and then only up to its limits and subject to state law, so the contract you sign and the policy you carry need to match.
How coverage for an assumed obligation works
The standard ISO commercial general liability form excludes bodily injury or property damage the insured must pay "by reason of the assumption of liability in a contract or agreement," under Coverage A, Exclusion b of the ISO CG 00 01 specimen form (opens in a new tab). Two exceptions bring coverage back: liability you would have had without the contract, and liability assumed in an "insured contract." The same form gives limited treatment to defense costs when an insured contract assumes the other party's defense.
A Connecticut state contract, for example, requires general liability coverage of $1,000,000 per occurrence and $2,000,000 aggregate, including contractual liability, according to Connecticut Office of Policy and Management contract requirements (opens in a new tab). Suppose a contractor carrying those limits signs an indemnity agreement that counts as an insured contract, and a covered claim produces $1,200,000 in damages with no deductible.
Hover or tap a row to highlight it.
| Item | Amount |
|---|---|
| Covered damages under the insured contract | $1,200,000 |
| Per-occurrence limit paid by the insurer | $1,000,000 |
| Left with the contractor ($1,200,000 minus $1,000,000) | $200,000 |
The insurer pays $1,000,000 and the contractor owes the remaining $200,000, subject to the actual policy, defense costs, the aggregate limit, and whether the contract is enforceable. If the agreement falls outside the insured contract definition, the exclusion can apply to the whole obligation, leaving the contractor responsible for all of it rather than only the amount above the limit.
Limits and policy versions that change the answer
The contract, the business, the insurer, and the endorsements set these, not one national standard.
Required limits. The Connecticut contract above asks for $1,000,000 per occurrence and $2,000,000 aggregate, while a federal construction contract example (opens in a new tab) requires $2,000,000 per occurrence and $4,000,000 aggregate. A higher limit raises the amount available for a covered claim.
Blanket or specific. Blanket contractual liability applies to qualifying contracts generally, subject to the definition and exclusions, while specific contractual liability names a particular contract or project.
Standard or endorsed wording. An unendorsed ISO form keeps both exceptions to the exclusion. A restrictive endorsement can remove or narrow the insured contract exception, and that can hide behind a declarations page that otherwise looks complete.
Related contract demands. Additional insured status, waiver of subrogation, primary and noncontributory wording, and per-project aggregates address other parts of the contract and do not by themselves broaden contractual liability coverage.
The premium effect of any of these depends on the policy, so ask your agent how a requested limit or endorsement changes the quote.
Where you see the term
Contractual liability mostly comes up in business insurance: general liability insurance, commercial auto, umbrella, professional liability insurance, and contractors' policies. In a general liability policy, read the declarations page for limits and attached forms, the Coverage A exclusion, the "insured contract" definition in Section V, and any endorsement that restricts, deletes, or broadens it. You may also meet it in a quote, binder, renewal proposal, the insurance section of a customer contract or lease, a certificate request, or a claim letter. Personal auto, homeowners, renters, life, health, and pet policies are generally not sold as contractual liability coverage.
A certificate of insurance is evidence of insurance, not the policy, according to the Connecticut State Insurance and Risk Management Board (opens in a new tab), so it cannot show whether a particular promise is covered.
How Connecticut and New York treat it
Each state changes a different part of the answer.
In Connecticut, any agreement that indemnifies one person against property injury from a future accident is a contract of insurance to the extent of that indemnification under Conn. Gen. Stat. § 38a-319 (opens in a new tab), with an exception for a seller's guarantee of workmanship and materials. Construction contract clauses that indemnify a party for bodily injury or property damage caused by that party's own negligence are against public policy and void under Conn. Gen. Stat. § 52-572k (opens in a new tab), which leaves insurance contracts from licensed insurers unaffected. That rule decides whether the promise is enforceable; it does not create coverage.
In New York, contractual liability insurance is not service contract reimbursement insurance and cannot serve as proof of a service contract provider's financial responsibility unless it meets the statutory requirements, according to New York DFS Opinion No. 05-05-31 (opens in a new tab). Service contracts and their reimbursement policies are governed by New York Insurance Law § 7902 (opens in a new tab) and § 7905 (opens in a new tab).
Questions to ask an agent or insurer
- Does my policy cover liability I assume in this specific contract, and is the contract an "insured contract"? The ISO form excludes assumed liability unless one of its exceptions applies.
- Is the coverage blanket, or limited to a scheduled contract, project, or type of agreement? The scope decides whether this lease, subcontract, or customer contract falls inside it.
- Does any endorsement delete, narrow, or amend the insured contract definition? An endorsement can change the standard exception a great deal.
- What are the per-occurrence and aggregate limits, deductible, self-insured retention, and defense-cost treatment? A covered obligation can still exceed the limit or leave you paying the retention.
- Does the certificate or additional insured endorsement satisfy the contract, and what exclusions or completed-operations limits apply? The policy and endorsements, not the certificate, decide the actual coverage.
Frequently asked questions
These come up when a contract arrives with an insurance requirement.
Does contractual liability cover a breach of contract or an unpaid invoice?
Generally not. The coverage applies to bodily injury or property damage you assumed responsibility for, so a breach of contract, unpaid invoice, defective performance, or warranty obligation can fall outside it. Ask the insurer how the policy treats the specific obligation.
Can state law cancel an indemnity clause?
Yes. Connecticut and Minnesota restrict certain construction indemnity clauses, especially those covering another party's negligence; Minnesota's rules are in Minnesota Statutes §§ 337.01 to 337.05 (opens in a new tab). Those limits affect whether the agreement can be enforced and do not expand insurance coverage.
Is contractual liability the same as an additional insured?
No. Contractual liability is responsibility you assume under an agreement. An additional insured is another person or organization added to your policy by endorsement for specified liability, and adding one does not make every indemnity promise an insured contract.