22 U.S. Code § 4113 - Representation rights and duties
A labor organization which has been accorded exclusive recognition is the exclusive representative of, and is entitled to act for, and negotiate collective bargaining agreements covering, all employees in the unit described in section 4112 of this title. An exclusive representative is responsible for representing the interests of all employees in that unit without discrimination and without regard to labor organization membership.
The Department and the exclusive representative, through appropriate representatives, shall meet and negotiate in good faith for the purposes of arriving at a collective bargaining agreement. In addition, the Department and the exclusive representative may determine appropriate techniques, consistent with the provisions of section 4110 of this title, to assist in any negotiation.
The Department shall consult with the exclusive representative with respect to Government-wide or multiagency matters affecting the rights, benefits, or obligations of individuals employed in agencies not authorized to utilize the Foreign Service personnel system. The exclusive representative shall be informed of any change proposed by the Department with respect to such matters, and shall be permitted reasonable time to present its views and recommendations regarding such change. The Department shall consider the views and recommendations of the exclusive representative before taking final action on any such change, and shall provide the exclusive representative a written statement of the reasons for taking the final action.