The Federal Labor Relations Authority (FLRA) has exclusive jurisdiction to hear challenges to executive orders affecting collective bargaining in the federal sector, the U.S. Court of Appeals for the District of Columbia Circuit has held. Therefore, the federal district courts lack authority to issue injunctions even partially enjoining those orders.
In May 2018, the President issued three executive orders affecting federal labor relations: an order directing agencies to follow certain procedures in conducting negotiations, such as not bargaining over permissive subjects; an order limiting the extent to which employees could conduct union business during official working hours; and an order seeking to exclude from grievance and arbitration procedures disputes over the removal of employees for misconduct or unacceptable performance. Seventeen federal labor unions challenged these orders on various constitutional and statutory grounds. Without reaching the merits of any of these grounds, the D.C. Circuit ruled that the district court lacked subject matter jurisdiction and should not have heard the challenges in the first place.
The full opinion can be found here.