; or (III) upholding the rights and protections of this subchapter with regard to the laborer or mechanic's performance of such labor; or (iv) based on an act or omission of the 2 or more persons, the laborer or mechanic reasonably believed that such persons were the laborer or mechanic's employers and the laborer or mechanic did not have actual knowledge that any of the persons were not the laborer or mechanic's employer under this subchapter. . (g) McNamara-O'Hara Service Contract Act Chapter 67 of title 41, United States Code, is amended by inserting after section 6701 the following: 6701a. Applicability to multiple employers and related entities (a) Multiple employers (1) Rule of interpretation This subsection— (A) is to be read as an addition to, and an augmentation and expansion of, all relevant judicial and agency interpretations in existence on the date of enactment of the Worker Flexibility and Small Business Protection Act of 2020 regarding which persons qualify as employers in relation to a given service employee under this chapter, including in a multiple employer or joint employment structure; (B) shall not be interpreted by any court or agency as a restriction on, or narrowing of, any such interpretations; and (C) is not a codification of the common law and shall not be interpreted to reflect, or to be limited or restricted by, common law interpretations regarding whether a person is an employer of a given service employee or whether multiple persons are employers of a service employee. (2) Additional multiple employer determinations Two or more persons, acting directly or indirectly, shall be responsible for the rights and protections of this chapter with respect to a service employee if— (A) one of the persons is a contractor, or subcontractor, for a contract to which this chapter applies and the service employee is performing labor under such contract