5 U.S.C. § 7135 - U.S. Code - Unannotated Title 5. Government Organization and Employees § 7135. Continuation of existing laws, recognitions, agreements, and procedures

(1) the renewal or continuation of an exclusive recognition, certification of an exclusive representative, or a lawful agreement between an agency and an exclusive representative of its employees, which is entered into before the effective date of this chapter; or

(2) the renewal, continuation, or initial according of recognition for units of management officials or supervisors represented by labor organizations which historically or traditionally represent management officials or supervisors in private industry and which hold exclusive recognition for units of such officials or supervisors in any agency on the effective date of this chapter.