Miller Act

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Construction of the Pentagon, 1942.

The Miller Act (ch. 642, Sec. 1-3, 49 stat. 793,794, codified as amended at 40 U.S.C. §§ 31313134 (formerly 40 U.S.C. §§ 270a270d)) requires prime contractors on some government construction contracts to post bonds guaranteeing both the performance of their contractual duties and the payment of their subcontractors and material suppliers.

The Act was originally enacted as the Heard Act in 1893. It came to be known as the Miller Act in 1935.[1]

Background and Purpose[edit]

The Miller Act addresses two concerns that would otherwise exist in the performance of federal government construction projects:

  1. Performance Bonds: The contractor's abandonment or other non-performance of a government job may cause critical delays and added expense in the government procurement process. The bonding process helps weed out irresponsible contractors while the bond itself defrays the government's cost of substitute performance. The subrogration right of the bond surety against the contractor (i.e., the right to sue for indemnification) is a deterrent to non-performance.
  2. Payment Bonds: Subcontractors and material suppliers would otherwise be reluctant to work on such projects (knowing that sovereign immunity prevents the establishment of a mechanic's lien) - decreasing competition and driving up construction costs.

Summary of the Act[edit]

Contracts to which the Act Applies[edit]

The Miller Act applies to contracts awarded for the construction, alteration, or repair of any public building or public work of the Federal Government. [2] While the Act provides that these bonds must be posted on contracts exceeding $100,000.00, Federal Acquisition Regulation (FAR) Part 28 requires the bonds only on contracts that exceed $150,000.00.[3]

The Act requires the Federal Acquisition Regulations to establish alternative payment protections for contracts in excess of $30,000.00 but not exceeding $150,000.00, with the contract-specific protection to be determined by the contracting officer.[4] While the Miller Act applies only to federal contracts, state legislatures throughout the country have enacted "Little Miller Acts," which establish similar requirements for state contracts.

Posting of Performance Bonds[edit]

Prior to the award of the contract, the contractor must furnish the government a performance bond issued by a surety satisfactory to the officer awarding the contract, and in an amount the contracting officer considers adequate, for the protection of the Government.[5]

Posting of Payment Bonds[edit]

The contractor must also furnish a payment bond with a surety satisfactory to the contracting officer for the protection of all persons supplying labor and material in carrying out the work provided for in the contract for the use of each person. The amount of the payment bond generally must equal the total amount payable by the terms of the contract.[6]

Enforcement on Payment Bonds[edit]

A subcontractor or material supplier who has not been paid within 90 days after the day on which he last furnished labor or materials for which the claim is made may bring a civil action on the payment bond for the amount unpaid at the time the suit is brought. [7] The suit must be brought no later than one year after the day on which the last of the labor was performed or material was supplied by the person bringing the action.[8]

The agency issuing the contract is required to provide a copy of the payment bond (which identifies the surety - who would be the defendant in an enforcement action) upon the presentation of an affidavit indicating the person requesting the copy has not been paid for labor or materials furnished under the contract.[9]

A person having a direct contractual relationship with a subcontractor but no contractual relationship, express or implied, with the contractor furnishing the payment bond may bring a civil action on the payment bond on giving written notice to the contractor within 90 days from the date on which the person did or performed the last of the labor or furnished or supplied the last of the material for which the claim is made. The action must 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. [10]

Waiver of Payment Bond Rights[edit]

A waiver of the right to pursue a payment bond action under the Act by a person supplying labor or materials is void unless it was executed in writing and after the labor or materials were supplied.[11]


  1. ^ Schubert L. (2003). Q&A: The Legal Basics of Surety Bonds. Construction Executive.
  2. ^ 40 U.S.C. § 3131(b)
  3. ^
  4. ^ 40 U.S.C. § 3132
  5. ^ 40 U.S.C. § 3131(b)(1)
  6. ^ 40 U.S.C. § 3131(b)(2)
  7. ^ 40 U.S.C. § 3133(b)(1)
  8. ^ 40 U.S.C. § 3133(b)(4)
  9. ^ 40 U.S.C. § 3133(a)
  10. ^ 40 U.S.C. § 3133(b)(2)
  11. ^ 40 U.S.C. § 3133(c))