; (II) ensuring compliance with the requirements of this chapter with regard to the individual's performance of such labor; or (III) upholding the rights and protections of this chapter with regard to the individual's performance of such labor; or (iv) based on an act or omission of the 2 or more persons, the individual reasonably believed that such persons were the individual's employers and the individual did not have actual knowledge that any of the persons were not the individual's employer under this chapter. . (i) Family and Medical Leave Act of 1993 Section 101(4) of the Family and Medical Leave Act of 1993 ( 29 U.S.C. 2611(4) ), as amended by section 102(h)(3), is further amended by adding at the end the following: (D) Multiple employers (i) Rule of interpretation This subparagraph— (I) 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 employee under this Act, including in a multiple employer or joint employment structure; (II) shall not be interpreted by any court or agency as a restriction on, or narrowing of, any such interpretations