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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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77 sections with “period of actual work performance”: the first 40

  • FAR 52.211-8 Time of Delivery.
    …of delivery, offers that propose delivery of each quantity within the applicable delivery period specified above. Offers that propose delivery that will not clearly fall within the applicable required delivery period specified above, will b…
  • FAR 52.211-9 Desired and Required Time of Delivery.
    …ule below. However, the offeror's proposed delivery schedule must not extend the delivery period beyond the time for delivery in the Government's required delivery schedule as follows: REQUIRED DELIVERY SCHEDULE [Contracting Officer inser…
  • FAR 52.222-32 Construction Wage Rate Requirements—Price Adjustment (Actual Method).
    … is effective for an option to extend the term of the contract, will apply to that option period. (b)(1) The Contractor states that if the prices in this contract contain an allowance for wage or benefit increases, such allowance will not …
  • FAR 52.232-22 Limitation of Funds.
    As prescribed in 32.706-2(b), insert the following clause. The 60-day period may be varied from 30 to 90 days and the 75 percent from 75 to 85 percent. “Task Order” or other appropriate designation may be substituted for “Schedule” wherever…
  • FAR 52.246-2 Inspection of Supplies—Fixed-Price.
    …ed for by the contract, to the extent practicable, at all places and times, including the period of manufacture, and in any event before acceptance. The Government shall perform inspections and tests in a manner that will not unduly delay t…
  • DFARS 215.404-71-3 Contract type risk and working capital adjustment.
    …contracting officer for such action definitizes the contract after the end of the 180-day period beginning on the date on which the contractor submitted the qualifying proposal as defined in 217.7401, the profit allowed on the contract shal…
  • DFARS 252.227-7018 Rights in Other Than Commercial Technical Data and Computer Software—Small Business Innovation Research Program and Small Business Technology Transfer Program.
    …ce of a phase I, II, or III SBIR/STTR contract or subcontract. SBIR/STTR data protection period means the time period during which the Government is obligated to protect SBIR/STTR data against unauthorized use and disclosure in accordance …
  • FAR 52.212-3 Offeror Representations and Certifications—Commercial Products and Commercial Services.
    …he award of contracts by any Federal agency; (2) □ Have, □ have not, within a three-year period preceding this offer, been convicted of or had a civil judgment rendered against them for: Commission of fraud or a criminal offense in connect…
  • FAR 52.222-55 Minimum Wages for Contractor Workers Under Executive Order 14026.
    …y to cover increased costs for which adjustment is provided under this clause. (5) A pay period under this clause may not be longer than semi-monthly, but may be shorter to comply with any applicable law or other requirement under this con…
  • FAR 22.404-12 Labor standards for contracts containing construction requirements and option provisions that extend the term of the contract.
    …nto the contract at the exercise of the option into task orders issued during that option period. The wage determination will be effective for the complete period of performance of those task orders without further revision. (c) The contra…
  • DFARS 252.225-7009 Restriction on Acquisition of Certain Articles Containing Specialty Metals.
    …domestically melted or produced specialty metals in the required form, for use during the period of contract performance in the production of the commercial derivative military article and the related commercial article, if— (i) The Contra…
  • FAR 2.101 Definitions.
    …Government contracting and Government-approved subcontracting for a reasonable, specified period; a contractor that is “debarred” is excluded Delivery order means an order for supplies placed against an established contract or with Governm…
  • FAR 7.105 Contents of written acquisition plans.
    …s being acquired and state how they are related to the need. (5) Delivery or performance-period requirements. Describe the basis for establishing delivery or performance-period requirements (see subpart 11.4). Explain and provide reasons f…
  • FAR 16.601 Time-and-materials contracts.
    …nding shall be— (i) Signed by the contracting officer prior to the execution of the base period or any option periods of the contracts; and (ii) Approved by the head of the contracting activity prior to the execution of the base period wh…
  • FAR 22.404-5 Expiration of project wage determinations.
    … the work is being obtained. The contracting officer shall request offerors to extend the period for acceptance of any proposal if that period expires or may expire before receipt and full processing of the new determination. (3) If the ne…
  • FAR 32.904 Determining payment due dates.
    …contract requirement; (2) If actual acceptance occurs within the constructive acceptance period, the Government must base the determination of an interest penalty on the actual date of acceptance; (3) The constructive acceptance requireme…
  • FAR 52.212-4 Contract Terms and Conditions—Commercial Products and Commercial Services.
    …y the Secretary of the Treasury as provided in 41 U.S.C. 7109, which is applicable to the period in which the amount becomes due, as provided in (i)(6)(v) of this clause, and then at the rate applicable for each six-month period as fixed by…
  • FAR 52.216-7 Allowable Cost and Payment.
    …does not remain unpaid 30 days after the end of the applicable quarter or shorter payment period (any contribution remaining unpaid shall be excluded from the Contractor's indirect costs for payment purposes). (3) Notwithstanding the audit…
  • FAR 52.222-6 Construction Wage Rate Requirements.
    …ablished facilities are not a part of the “site of the work” even if the operations for a period of time may be dedicated exclusively or nearly so, to the performance of a contract. (b)(1) All laborers and mechanics employed or working upo…
  • FAR 52.222-41 Service Contract Labor Standards.
    …o conduct interviews with employees at the worksite during normal working hours. (j) Pay Periods. The Contractor shall unconditionally pay to each employee subject to the Service Contract Labor Standards statute all wages due free and clea…
  • FAR 52.222-43 Fair Labor Standards Act and Service Contract Labor Standards—Price Adjustment (Multiple Year and Option Contracts).
    … the anniversary date of a multiple year contract or the beginning of each renewal option period, shall apply to this contract. If no such determination has been made applicable to this contract, then the Federal minimum wage as established…
  • FAR 52.227-11 Patent Rights—Ownership by the Contractor.
    … in any case where publication, on sale, or public use has initiated the 1-year statutory period during which valid patent protection can be obtained in the United States, the period for election of title may be shortened by the agency to a…
  • FAR 52.232-12 Advance Payments.
    …(b)(2)). The Contracting Officer shall revise the daily interest rate during the contract period in keeping with any changes in the cited interest rates. (4) If the full amount of interest charged under this paragraph has not been paid by …
  • FAR 52.245-1 Government Property.
    …edures necessary to assess its property management system effectiveness and shall perform periodic internal reviews, surveillances, self assessments, or audits. Significant findings or results of such reviews and audits pertaining to Govern…
  • FAR 52.245-9 Use and Charges.
    …45-1, Government Property. Additional definitions as used in this clause include: Rental period means the calendar period during which Government property is made available for nongovernmental purposes. Rental time means the number of hou…
  • DFARS 227.7103-5 Government rights.
    …nt, manufacture, construction, or production of items, components, or processes. (2) The period during which government purpose rights are effective is negotiable. The clause at 252.227-7013 provides a nominal five-year period. Either part…
  • DFARS 252.219-7004 Small Business Subcontracting Plan (Test Program).
    … $100 million. (d) Reports. (1) The Contractor shall report semiannually for the 6-month periods ending March 31 and September 30, the information in paragraphs (d)(1)(i) through (v) of this section within 30 days after the end of the repo…
  • DFARS 252.227-7013 Rights in Technical Data—Other Than Commercial Products and Commercial Services.
    …ment purpose rights. (i) The Government shall have government purpose rights for a 5-year period, or such other period as may be negotiated, in technical data— (A) That pertain to items, components, or processes developed with mixed fundin…
  • DFARS 252.227-7038 Patent Rights—Ownership by the Contractor (Large Business).
    … in any case where publication, on sale, or public use has initiated the 1-year statutory period during which valid patent protection can be obtained in the United States, the agency may shorten the period of election of title to a date tha…
  • FAR 15.605 Content of unsolicited proposals.
    … total estimated cost for the effort in sufficient detail for meaningful evaluation; (2) Period of time for which the proposal is valid (a 6-month minimum is suggested); (3) Type of contract preferred; (4) Proposed duration of effort; (…
  • FAR 16.306 Cost-plus-fixed-fee contracts.
    …erms and obligates the contractor to devote a specified level of effort for a stated time period. Under this form, if the performance is considered satisfactory by the Government, the fixed fee is payable at the expiration of the agreed-upo…
  • FAR 16.401 General.
    …echnical performance in the aggregate is below satisfactory; (vi) Provide for evaluation period(s) to be conducted at stated intervals during the contract period of performance so that the contractor will periodically be informed of the qu…
  • FAR 22.404-6 Modifications of wage determinations.
    …re award, shall be effective for any resultant contract unless an extension of the 90-day period is obtained from the Administrator, Wage and Hour Division. An agency head may request such an extension from the Administrator. The request mu…
  • FAR 32.406 Letters of credit.
    …; i.e., for limiting advances to (1) only the estimated disbursements for a given initial period and (2) subsequently, for only actual cash disbursements (31 CFR 205.3(k) and 205.7).
  • FAR 49.402-3 Procedure for default.
    …g officer shall give the contractor written notice specifying the failure and providing a period of 10 days (or longer period as necessary) in which to cure the failure. When appropriate, this notice may be made a part of the notice describ…
  • FAR 52.226-7 Drug-Free Workplace.
    …ontractor, if other than an individual, shall—within 30 days after award (unless a longer period is agreed to in writing for contracts of 30 days or more performance duration); or as soon as possible for contracts of less than 30 days perfo…
  • FAR 52.227-13 Patent Rights—Ownership by the Government.
    …o paragraph (e)(2) of this clause, or not later than 8 months thereafter, unless a longer period is authorized in writing by the Contracting Officer for good cause shown in writing by the Contractor. Each determination of greater rights und…
  • FAR 52.249-6 Termination (Cost-Reimbursement).
    …ing by the Contracting Officer upon written request of the Contractor within this 120-day period. (e) After expiration of the plant clearance period as defined in subpart 49.001 of the Federal Acquisition Regulation, the Contractor may sub…
  • DFARS 252.247-7002 Revision of prices.
    …or demand. However, this limitation does not apply to a wage adjustment during the 90 day period. (3) Each demand shall specify a date (the same as or subsequent to the date of the delivery of the demand) as to when the revised prices shal…
  • FAR 16.503 Requirements contracts.
    … of designated Government activities for supplies or services during a specified contract period (from one contractor), with deliveries or performance to be scheduled by placing orders with the contractor. (1) For the information of offero…

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.