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48 CFR · Federal Acquisition Regulation and Defense supplement

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The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.

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55 sections with “essential contractor services”: the first 40

  • DFARS 252.237-7023 Continuation of Essential Contractor Services.
    As prescribed in 237.7603(a), use the following clause: Continuation of Essential Contractor Services (OCT 2010) (a) Definitions. As used in this clause- (1) Essential contractor service means a service provided by a firm or individual u…
  • DFARS 252.237-7024 Notice of Continuation of Essential Contractor Services.
    As prescribed in 237.7603(b), use the following provision: Notice of Continuation of Essential Contractor Services (OCT 2010) (a) Definitions. Essential contractor service and mission-essential functions have the meanings given in the cla…
  • FAR 52.204-25 Prohibition on Contracting for Certain Telecommunications and Video Surveillance Services or Equipment.
    …ither because signal coverage is too weak or because traffic is too high. Substantial or essential component means any component necessary for the proper function or performance of a piece of equipment, system, or service. (b) Prohibition…
  • DFARS 252.225-7040 Contractor Personnel Supporting U.S. Armed Forces Deployed Outside the United States.
    …rization. In some cases, Combatant Commander subordinate commanders may designate mission-essential host nation or local national contractor employees (e.g., interpreters) as CAAF. CAAF includes contractors previously identified as contract…
  • DFARS 252.204-7018 Prohibition on the Acquisition of Covered Defense Telecommunications Equipment or Services.
    …o section 1758 of the Export Control Reform Act of 2018 (50 U.S.C. 4817). Substantial or essential component means any component necessary for the proper function or performance of a piece of equipment, system, or service. (b) Prohibition…
  • FAR 6.302-3 Industrial mobilization; engineering, developmental, or research capability; or expert services.
    …tional emergency or to achieve industrial mobilization; (ii) To establish or maintain an essential engineering, research, or development capability to be provided by an educational or other nonprofit institution or a federally funded resea…
  • DFARS 237.7602 Policy.
    (a) Contractors providing services designated as essential contractor services shall be prepared to continue providing such services, in accordance with the terms and conditions of their contracts, during periods of crisis. As a general rul…
  • FAR 50.103-4 Facts and evidence.
    …levant statements or evidence that may be required. (b) Amendments without consideration—essentiality a factor. When a request involves possible amendment without consideration, and essentiality to the national defense is a factor (50.103-…
  • DFARS 237.7601 Definitions.
    As used in this subpart, essential contractor service and mission-essential functions are defined in the clause at 252.237-7023, Continuation of Essential Contractor Services.
  • DFARS 237.7603 Solicitation provision and contract clause.
    (a) Use the clause at 252.237-7023, Continuation of Essential Contractor Services in all solicitations and contracts for services that are in support of mission-essential functions. (b) Use the provision at 252.237-7024, Notice of Continua…
  • FAR 2.101 Definitions.
    …defined in OMB Circular No. A-109 or to provide direct support of a weapon system that is essential to research, development, production, operation or maintenance of the system. Affiliates means associated business concerns or individuals …
  • FAR 4.2102 Prohibition.
    …or service that uses covered telecommunications equipment or services as a substantial or essential component of any system, or as critical technology as part of any system, unless an exception at paragraph (b) of this section applies or th…
  • FAR 6.302-1 Only one responsible source and no other supplies or services will satisfy agency requirements.
    …cate that the use of such descriptions in the acquisition or portion of an acquisition is essential to the Government's requirements, thereby precluding consideration of a product manufactured by another company; and (C) The justification …
  • FAR 46.407 Nonconforming supplies or services.
    …ejection and be furnished promptly to the contractor. Promptness in giving this notice is essential because, if timely nature of rejection is not furnished, acceptance may in certain cases be implied as a matter of law. The notice must, be …
  • DFARS 237.7600 Scope.
    This subpart prescribes procedures for the acquisition of essential contractor services which support mission-essential functions.
  • FAR 1.102-2 Performance standards.
    …vide uniformity where it contributes to efficiency or where fairness or predictability is essential. The System should also, however, encourage innovation, and local adaptation where uniformity is not essential. (c) Conduct business with i…
  • FAR 25.301-2 Government support.
    …s that— (1) Such Government support is available and is needed to ensure continuation of essential contractor services; and (2) The contractor cannot obtain adequate support from other sources at a reasonable cost. (b) The contracting of…
  • DFARS 225.371-3 Government support.
    …r that— (1) Such Government support is available and is needed to ensure continuation of essential contractor services; and (2) The contractor cannot obtain adequate support from other sources at a reasonable cost. (c) The contracting of…
  • FAR 13.201 General.
    …or service that uses covered telecommunications equipment or services as a substantial or essential component of any system, or as critical technology as part of any system, unless an exception applies or a waiver is granted. (See subpart 4…
  • FAR 15.404-2 Data to support proposal analysis.
    …nd reasonable price. The contracting officer shall tailor requests to reflect the minimum essential supplementary information needed to conduct a technical or cost or pricing analysis. (2) The contracting officer shall tailor the type of i…
  • FAR 15.407-2 Make-or-buy programs.
    …ed or provided by the contractor and are available—quality, quantity, delivery, and other essential factors considered—from another firm at equal or lower prices, or when they are regularly manufactured or provided by the contractor, but ar…
  • FAR 16.402-2 Performance incentives.
    …the end item. (e) Performance tests and/or assessments of work performance are generally essential in order to determine the degree of attainment of performance targets. Therefore, the contract must be as specific as possible in establishi…
  • FAR 39.101 Policy.
    …or service that uses covered telecommunications equipment or services as a substantial or essential component of any system, or as critical technology as part of any system on or after August 13, 2019, unless an exception applies or a waive…
  • DFARS 204.2103 Procedures.
    …or services that use covered telecommunications equipment or services as a substantial or essential component of any system, or as critical technology as part of any system, that a waiver as described at FAR 4.2104 has been granted; or (2)…
  • DFARS 223.7104 Exceptions.
    …The Secretary of Defense may grant an exception to the prohibition in 10 U.S.C. 2692 when essential to protect the health and safety of the public from imminent danger if the Secretary otherwise determines the exception is essential and if …
  • FAR 7.105 Contents of written acquisition plans.
    …ponsibility, or adequacy of the contractor's accounting system), and associated reasoning essential to support the contract type selection. The contracting officer shall ensure that requirements and technical personnel provide the necessary…
  • FAR 8.405-6 Limiting sources.
    …specifications shall not be used unless the particular brand name, product, or feature is essential to the Government's requirements, and market research indicates other companies' similar products, or products lacking the particular featur…
  • FAR 11.002 Policy.
    … services in terms of— (A) Functions to be performed; (B) Performance required; or (C) Essential physical characteristics; (ii) Define requirements in terms that enable and encourage offerors to supply commercial products or commercial …
  • FAR 14.407-4 Mistakes after award.
    …ation if correcting the mistake would be favorable to the Government without changing the essential requirements of the specifications. (b) In addition to the cases contemplated in paragraph (a) above or as otherwise authorized by law, age…
  • FAR 15.404-4 Profit.
    …y consider it, if it is submitted voluntarily. (6) If a change or modification calls for essentially the same type and mix of work as the basic contract and is of relatively small dollar value compared to the total contract value, the cont…
  • FAR 16.104 Factors in selecting contract types.
    …and the Government provide the bases for negotiating contract pricing arrangements. It is essential that the uncertainties involved in performance and their possible impact upon costs be identified and evaluated, so that a contract type tha…
  • FAR 16.505 Ordering.
    …specifications shall not be used unless the particular brand-name, product, or feature is essential to the Government's requirements and market research indicates other companies' similar products, or products lacking the particular feature…
  • FAR 19.809-2 Limitations on subcontracting and nonmanufacturer rule.
    …District Director makes a written determination that larger amounts of subcontracting are essential during certain stages of performance. (1) The 8(a) participant is required to provide the SBA District Director written assurance that the …
  • FAR 22.101-2 Contract pricing and administration.
    …nly those costs necessary for performing the contract in accordance with the Government's essential interest. (d) If during a labor dispute, the inspectors' safety is not endangered, the normal functions of inspection at the plant of a Gov…
  • FAR 22.201 General.
    … states: “The development of the occupational and educational skills of prison inmates is essential to their rehabilitation and to their ability to make an effective return to free society. Meaningful employment serves to develop those skil…
  • FAR 22.802 General.
    …he compensation information of other employees or applicants as a part of such employee's essential job functions discloses the compensation of such other employees or applicants to individuals who do not otherwise have access to such infor…
  • FAR 22.1003-4 Administrative limitations, variations, tolerances, and exemptions.
    …f micro-electronic circuitry or other technology of at least similar sophistication is an essential element (for example, Product or Service Code (PSC) 6515, “Medical and Surgical Instruments, Equipment, and Supplies;” PSC 6525, “Imaging Eq…
  • FAR 23.107-4 Products that contain, use, or are manufactured with ozone-depleting substances or products that contain or use high global warming potential hydrofluorocarbons.
    … in 40 CFR 82.84(a)(1), except in the case of Class I substances being used for specified essential uses, as identified under 40 CFR 82.4(n); and (iii) Unless a particular contract requires otherwise, specify that, when feasible, contracto…
  • FAR 25.301-1 Scope.
    …nt; or (2) Provision of emergency infrastructure reconstruction, humanitarian relief, or essential governmental services (until feasible to transition to local government). (c) This section does not apply to personal services contracts (s…
  • FAR 27.102 General guidance.
    … of that data. When such data is delivered, the Government will acquire only those rights essential to its needs. (e) Generally, the Government requires that contractors obtain permission from copyright owners before including copyrighted …

FAR (chapter 1)

DFARS (chapter 2, Defense)

Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Rule changes in progress: FAR, DFARS. Terms: glossary.