Defenses the Surety Will Raise

A surety receiving a bond claim does not begin with the merits. It begins with the conditions the statute attaches to the right of action, because those dispose of a claim without any inquiry into what was supplied or what it was worth. Only if the claim survives that review does the account become relevant, and by then the surety is usually taking the principal's position on the amount.

The threshold defenses

Four objections are raised before anything else. The first is that the claimant is outside the protected class, typically because it supplied a supplier rather than a subcontractor, or because the labor or material was not furnished in carrying out the bonded contract. The second is that a required notice was not given, was given late, went to the wrong recipient, or omitted the amount claimed or the identity of the party that ordered the work.

The third is that the action was commenced after the statutory period expired. This is the strongest defense available because it requires no evidence about the claim itself, only the date of the claimant's last labor or material and the date of filing. The fourth is that the claim is barred by a release or waiver signed in exchange for a progress payment, which is examined against the statutory form where one is prescribed.

These four are pleaded together and are usually resolved on documents. A claimant who anticipates them can defeat all four with material assembled during the project rather than after it, which is the practical reason to treat notice and record keeping as part of performing the work rather than as steps taken when payment stops.

Defenses borrowed from the principal

The surety's obligation is secondary, answering for the principal's default rather than creating an independent duty. It follows that the surety may generally assert whatever defenses the principal would have to the underlying obligation: that the work was defective, that the material was not delivered, that the price was different from the one claimed, that a backcharge offsets the balance, or that the account was already settled. This alignment is not sentimental. The surety expects reimbursement from the principal for whatever it pays, so paying a claim the principal disputes creates a dispute in the other direction.

Two categories fall outside the borrowing. Defenses personal to the principal, such as its bankruptcy discharge, do not discharge the surety, since the entire purpose of the bond is to answer where the principal cannot. And defenses the statute forecloses cannot be revived by the underlying contract, which is why a contractual waiver of bond rights in a subcontract is ineffective on a required federal bond unless it satisfies the statutory conditions.

Alteration of the underlying contract sits in a category of its own. The classical rule discharged a surety on any material change made without its consent, on the reasoning that the surety agreed to guarantee one obligation and not another. For compensated corporate sureties that rule has been narrowed almost everywhere, usually to require both a material increase in risk and actual prejudice, and bond forms commonly contain an express waiver of notice of modifications, extensions and change orders. The argument survives for changes that transform the undertaking rather than adjust it.

Payment, joint checks and exhaustion

Prior payment is a complete defense to the extent of the payment. It arises in two forms. The straightforward one is payment made directly to the claimant and either not credited or credited to a different account. The more contested one involves funds paid to the claimant's customer in circumstances where the surety says the claimant received the benefit, most commonly through a joint check made payable to the subcontractor and the claimant together. What such an instrument establishes is a recurring dispute, considered in joint check arrangements and what they prove.

Exhaustion is the final limit. The surety's liability on the bond is capped by the penal sum, and once that sum has been properly paid out the obligation ends, subject to whatever interest or costs a court adds. Where claims exceed the limit the usual approach is proportional abatement, and claimants confronting an insufficient bond should preserve their contract claims and any statutory procedure for reaching unpaid contract funds held by the public body.

Insufficiency is rarer than claimants fear on federal work, where the payment bond generally equals the full contract price and may never be less than the performance bond. It is a live risk on state and municipal projects that permit a reduced bond, and on private work where a combined instrument answers both completion costs and payment claims out of one limit.

Presenting a claim against this list

Because the order of defenses is predictable, a claim can be assembled to meet them in advance. Establish the tier and the connection to the bonded contract with project-identified records, as described in who may claim, by tier. Serve the notice early and keep the delivery verification. File within the period rather than negotiating up to it. Present a reconciled account showing every payment and its application, which is the material set out in proving the claim and the records that support it.

A final structural point about denials. Where the bond is backed by a federal guarantee program, the guarantor has its own grounds for denying liability to the surety, and those grounds concern the surety's conduct rather than the claimant's. A claimant is not a party to that arrangement and cannot be defeated by it, but it explains why a surety may investigate a claim more thoroughly than the amount would otherwise justify.