; (bb) ensuring compliance with the requirements of this Act with regard to the worker's performance of such labor; or (cc) upholding the rights and protections of this Act with regard to the worker’s performance of such labor; or (IV) based on an act or omission of the 2 or more persons, the worker reasonably believed that each such person was a farm labor contractor, agricultural employer, or agricultural association that employed the worker and the worker did not have actual knowledge that any of the persons were not the worker's employer for purposes of this this Act. (3) Interaction with registration requirements Notwithstanding paragraph (2), an agricultural employer or agricultural association shall not be subject to liability for any violation of title I by a farm labor contractor. . (f) Davis-Bacon Act Subchapter IV of chapter 31 of title 40, United States Code, as amended by section 102(f)(5), is further amended by inserting after section 3144a the following: 3144b. 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 laborer or mechanic under this subchapter, 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