; (B) collective bargaining agreement; or (C) existing employer policy; or (2) to require financial or other reimbursement to an employee from an employer upon the employee’s termination, resignation, retirement, or other separation from employment for paid sick time under this Act that has not been used by such employee. 5108. Effective date This Act, and the requirements under this Act, shall take effect not later than 15 days after the date of enactment of this Act. 5109. Sunset This Act, and the requirements under this Act, shall expire on December 31, 2020. 5110. Definitions For purposes of the Act: (1) Employee The terms employee means an individual who is— (A) (i) an employee, as defined in section 3(e) of the Fair Labor Standards Act of 1938 ( 29 U.S.C. 203(e) ), who is not covered under subparagraph (E) or (F), including such an employee of the Library of Congress, except that a reference in such section to an employer shall be considered to be a reference to an employer described in clauses (i)(I) and (ii) of paragraph (5)(A); or (ii) an employee of the Government Accountability Office; (B) a State employee described in section 304(a) of the Government Employee Rights Act of 1991 (42 U.S.C. 2000e–16c(a)); (C) a covered employee, as defined in section 101 of the Congressional Accountability Act of 1995 ( 2 U.S.C. 1301 ), other than an applicant for employment; (D) a covered employee, as defined in section 411(c) of title 3, United States Code; (E) a Federal officer or employee covered under subchapter V of chapter 63 of title 5, United States Code; or (F) any other individual occupying a position in the civil service (as that term is defined in section 2101(1) of title 5, United States Code). (2) Employer (A) In general The term employer means a person who is— (i) (I) a covered employer, as defined in subparagraph (B), who is not covered under subclause (V); (II) an entity employing a State employee described in section 304(a) of the Government Employee Rights Act of 1991