29 C.F.R. §§ 4.143–4.145

Sometimes an existing service contract is modified, amended, or extended in such a manner that the changed contract is considered to be a new contract for purposes of the application of the Act's provisions. The general rule with respect to such contracts is that, whenever changes affecting the labor requirements are made in the terms of the contract, the provisions of the Act and the regulations thereunder will apply to the changed contract in the same manner and to the same extent as they would to a wholly new contract. However, contract modifications or amendments (other than contract extensions) that are unrelated to the labor requirements of a contract will not be deemed to create a new contract for purposes of the Act. In addition, only significant changes related to labor requirements will be considered as creating new contracts. This limitation on the application of the Act has been found to be in accordance with the provisions of section 4(b) of the Act.

Also, whenever the term of an existing contract is extended, pursuant to an option clause or otherwise, so that the contractor furnishes services over an extended period of time, rather than being granted extra time to fulfill his original commitment, the contract extension is considered to be a new contract for purposes of the application of the Act's provisions. All such “new” contracts as discussed above require the insertion of a new or revised wage determination in the contract as provided in § 4.5.

Sometimes service contracts are entered into for an extended term exceeding one year; however, their continuation in effect is subject to the appropriation by Congress of funds for each new fiscal year. In such event, for purposes of this Act, a contract shall be deemed entered into upon the contract anniversary date which occurs in each new fiscal year during which the terms of the original contract are made effective by an appropriation for that purpose. In other cases a service contract, entered into for a specified term by a Government agency, may contain a provision such as an option clause under which the agency may unilaterally extend the contract for a period of the same length or other stipulated period. Since the exercise of the option results in the rendition of services for a new or different period not included in the term for which the contractor is obligated to furnish services or for which the Government is obligated to pay under the original contract in the absence of such action to extend it, the contract for the additional period is a wholly new contract with respect to application of the Act's provisions and the regulations thereunder (see § 4.143(b)).

With respect to multi-year service contracts which are not subject to annual appropriations (for example, concession contracts which are funded through the concessionaire's sales, certain operations and maintenance contracts which are funded with so-called “no year money” or contracts awarded by instrumentalities of the United States, such as the Federal Reserve Banks, which do not receive appropriated funds), section 4(d) of the Act allows such contracts to be awarded for a period of up to five years on the condition that the multi-year contracts will be amended no less often than once every two years to incorporate any new Service Contract Act wage determination which may be applicable. Accordingly, unless the contracting agency is notified to the contrary (see § 4.4(d)), such contracts are treated as wholly new contracts for purposes of the application of the Act's provisions and regulations thereunder at the end of the second year and again at the end of the fourth year, etc. The two-year period is considered to begin on the date that the contractor commences performance on the contract (i.e., anniversary date) rather than on the date of contract award.