5 USC 6130 - Application of programs in the case of collective bargaining agreements
(a)
(1) In the case of employees in a unit represented by an exclusive representative, any flexible or compressed work schedule, and the establishment and termination of any such schedule, shall be subject to the provisions of this subchapter and the terms of a collective bargaining agreement between the agency and the exclusive representative.
(2) Employees within a unit represented by an exclusive representative shall not be included within any program under this subchapter except to the extent expressly provided under a collective bargaining agreement between the agency and the exclusive representative.