The Notice a Remote Claimant Must Give
A claimant without a contract with the prime contractor must give written notice before it may sue on the bond. The statute prescribes the content, the recipient, the period and the method, and courts treat each element as a condition of the right.

The rule in short
Under the federal statute a person in a direct contractual relationship with a subcontractor, but none with the prime contractor, may sue on the payment bond only after giving written notice to the prime within ninety days of last furnishing. The notice must state with substantial accuracy the amount claimed and the party to whom the material was furnished or for whom the labor was performed, and must be served by a method giving third-party verification of delivery.
Claimants who dealt directly with the prime contractor may sue on a federal payment bond without any preliminary step. Claimants one step further down may not. A person having a direct contractual relationship with a subcontractor, but no contractual relationship express or implied with the prime contractor, must give written notice before an action will lie. The requirement is short, specific and enforced as a condition of the right rather than as a procedural formality.
The period and what starts it
The notice must be given within ninety days from the date on which the claimant did or performed the last of the labor, or furnished or supplied the last of the material, for which the claim is made. The trigger is the claimant's own last performance. It is not the invoice date, not the date payment became due, not the date of the last unanswered demand, and not the completion of the project.
Two recurring problems follow from that. The first is identifying the last day where deliveries were made over months. Continuous supply under a single arrangement is generally treated as one course of dealing ending on the final delivery for that arrangement, but separate purchase orders for distinct scopes may run separately. The second is the temptation to treat a small later act as restarting the period. Returning to correct defective work, retrieving equipment or making a token delivery is usually held not to extend it, on the view that the provision would otherwise be meaningless.
Where the running date is genuinely uncertain, the conservative course is to serve from the earliest defensible date rather than the latest. Early service costs nothing and forfeits nothing: the statute sets an outer limit on when notice may be given, not an earliest date. A claimant who serves promptly after ceasing work also gains a practical advantage, because the prime contractor still holds funds due to the subcontractor and can withhold against the claim.
What the notice must contain
The statute requires the notice to state with substantial accuracy the amount claimed and the name of the party to whom the material was furnished or supplied, or for whom the labor was done or performed. Those two items are the whole of the mandatory content. There is no prescribed form, no requirement that the document call itself a notice, and no requirement that it demand payment in terms.
The substantial accuracy standard gives some latitude on the amount, which is useful where a final figure depends on unbilled work or disputed extras. It gives none on the identity of the ordering party, because that is the information the prime contractor needs to investigate and to protect itself by withholding funds from the responsible subcontractor. A notice that states a figure without identifying whose debt it is fails at the point of the requirement.
The recipient under the federal statute is the prime contractor, at any place where it maintains an office or conducts business or at the contractor's residence. Sending the notice only to the subcontractor that owes the money does nothing, because that party already knows. Sending it only to the contracting agency does nothing either. Claimants unfamiliar with the structure routinely serve the wrong recipient and discover the error after the ninety days have run.
| Element | Federal requirement | Where states commonly differ |
|---|---|---|
| Who must give it | Claimants without privity with the prime | Some require notice from every claimant |
| Trigger | Last labor performed or material supplied | Some run from completion and acceptance of the work |
| Recipient | The prime contractor | Some require the public body, the surety, or both |
| Content | Amount claimed and the party that ordered the work | Some prescribe a statutory form of words |
| Service | Any method giving third-party verification of delivery | Some require personal service or filing with the agency |
| Additional early notice | None | Some require notice shortly after first furnishing |
Beyond the mandatory items, additional content is usually included and is usually useful. Identifying the project and the contract, describing the labor or material supplied, stating the dates of first and last furnishing and attaching the unpaid invoices all help the prime contractor evaluate the claim without further inquiry. None of it is required, and none of it cures a notice that omits the amount or the ordering party, but a notice that answers the obvious questions is more likely to produce payment without litigation.
How service must be made
The federal statute permits service by any means that provides written third-party verification of delivery to the contractor at any place it maintains an office or conducts business, or at the contractor's residence. It also permits service in any manner in which the United States marshal for the district where the public improvement is situated may serve a summons. The first route covers certified mail with return receipt and commercial delivery services that generate a delivery record.
What the provision does not accommodate is delivery without a record. Ordinary mail, electronic mail without an acknowledgment and hand delivery without a signed receipt all leave the claimant unable to prove the element on which the right depends. Since the burden falls on the claimant, an undocumented notice that was in fact received may still fail if the recipient denies it. Keeping the delivery record with the project file, rather than only the copy of the notice, is the practical point.
Addressing raises its own difficulty on large projects. The prime contractor's registered office, its project trailer and the address printed on the subcontract may all be different, and the statute permits service at any place where the contractor maintains an office or conducts business. Serving more than one of those addresses is prudent where the correct one is unclear, since a claimant needs only one delivery to succeed and gains nothing by choosing economically among them.
State variations, and the notice sent at the start
Several states impose obligations with no federal counterpart. Michigan requires a claimant without privity to serve two notices: one within thirty days after first furnishing, informing the principal contractor of the nature of the materials or labor, identifying the party that contracted for them and identifying the site, and a second within ninety days from last furnishing. A claimant who serves only the later notice has not complied. California conditions enforcement on the statutory preliminary notice used throughout its construction payment scheme, with a narrow alternative route measured from a recorded notice of completion.
Washington relocates the obligation entirely, requiring a written notice of claim filed with the public body within thirty days after completion of the contract and acceptance of the work. These divergences are collected in little Miller Acts and where they diverge from the federal rule. Whether the obligation applies at all depends on the claimant's position, which is analyzed in who may claim, by tier, and giving the notice does not by itself preserve the claim, because the separate period addressed in the deadline to sue on a payment bond continues to run.
Points to carry away
- The obligation falls only on claimants with no contractual relationship with the prime contractor.
- The period runs from the day the claimant last furnished labor or supplied material, not from the invoice date.
- The notice must state the amount claimed and the party that ordered the labor or material with substantial accuracy.
- Service must be by a method giving written third-party verification of delivery, or by the marshal.
- State statutes impose different content, recipients and periods, and several require an additional early notice.
Questions readers ask
Does an invoice or a demand letter satisfy the requirement?
Sometimes, if it contains what the statute requires and reaches the right recipient in time. Courts have accepted correspondence not labeled as a statutory notice where it stated the amount claimed and identified the party that ordered the work, on the reasoning that the provision exists to inform the prime contractor rather than to impose a form. What fails is a document that omits the amount, omits the identity of the ordering party, or is sent only to the subcontractor who already owes the money.
What if labor and material were furnished on several dates?
The period runs from the last day the claimant furnished labor or supplied material for the claim being made. Deliveries of the same materials under one arrangement are usually treated as a continuous course of supply with a single ending date. Separate arrangements are treated separately, so a claimant serving several distinct scopes may have several running periods. Warranty work, corrective work and returns to retrieve equipment generally do not restart the period, and relying on them to extend it is a recognized way to lose a claim.
Must the notice go to the surety as well?
The federal statute requires notice to the contractor, not to the surety, but sending a copy to the surety costs nothing and often accelerates the response. Several state statutes require the public body, the surety, or both, to receive the notice, and a claimant who serves only the prime contractor under such a statute has not preserved the claim. Because the recipient list is set by the governing statute rather than by convention, it should be read directly in every case.
Sources
- 40 U.S.C. § 3133 (Cornell LII)Prescribes the ninety-day notice, its content and the permitted methods of service.
- Michigan Compiled Laws § 129.207Requires an early notice within thirty days of first furnishing and a later notice within ninety days.
- California Civil Code § 9560Conditions enforcement on preliminary notice and provides an alternative measured from completion.
- Washington Revised Code § 39.08.030Requires a written notice of claim filed with the public body after completion and acceptance.
- FAR 28.106-6 — Furnishing informationDirects agencies to supply bond and contract information to persons who furnished labor or material.
- 40 U.S.C. § 3131 (Cornell LII)Identifies the bond and the class of persons for whose protection it is furnished.
Pinnacle Law Review is a publication, not a law firm. This article states general rules and cites its sources; it is not advice about any particular case, and the law differs by state and changes over time.
More in Surety & Payment
Proving the Claim and the Records That Support It
A payment bond claimant must prove that it furnished labor or material, that the labor or material was furnished in carrying out the bonded contract, the reasonable value or agreed price of what was furnished, and the balance unpaid after all credits. Each element is established from ordinary project records rather than from correspondence. A claim presented as a reconciled account with supporting documents is evaluated on the merits; one presented as a demand figure is not.
Defenses the Surety Will Raise
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The Surety's Indemnity Against the Contractor
A surety that pays under a bond has a right to recover from its principal, arising both from the general law of suretyship and from the general indemnity agreement executed before the bond issued. The agreement typically extends to losses, costs and fees, permits the surety to settle claims at its discretion, requires collateral on demand once exposure appears, and binds affiliated companies and individual owners personally. Its reach is far wider than the common law right alone.


