To provide for the resolution of certain labor issues relating to the merger of the Metro-North Railroad and the Long Island Rail Road.

Declares that the collective bargaining agreement between the Association of Commuter Rail Employees and the Metro-North Railroad shall be extinguished upon the merger of the Metro-North Railroad and the Long Island Rail Road. Deems employees of the entity resulting from such merger to be covered under the appropriate collective bargaining agreement of the Long Island Rail Road in compliance with the Railway Labor Act. Subordinates the appropriate seniority roster of Metro-North Railroad employees to the seniority roster of Long Island Rail Road employees. Subjects all disputes arising from the application of this Act to the jurisdiction of the National Mediation Board.