The Statute: § 7114. Representation rights and duties
(a)(1) A labor organization which has been accorded exclusive recognition is the exclusive representative of the employees in the unit it represents and is entitled to act for, and negotiate collective bargaining agreements covering, all employees in the unit. An exclusive representative is responsible for representing the interests of all employees in the unit it represents without discrimination and without regard to labor organization membership.
(2) An exclusive representative of an appropriate unit in an agency shall be given the opportunity to be represented at--
(A) any formal discussion between one or more representatives of the agency and one or more employees in the unit or their representatives concerning any grievance or any personnel policy or practices or other general condition of employment; or
(B) any examination of an employee in the unit by a representative of the agency in connection with an investigation if--
(i) the employee reasonably believes that the examination may result in disciplinary action against the employee; and
(ii) the employee requests representation.