Sec. 20 (2) reads as under: "20 (2): Where there is a recognised union for any undertaking, (a) that union alone shall have the right to appoint its nominees to represent workmen on the Works Committee constituted under Section 3 of the Central Act: (b) no employee shall be allowed to appear or act or be Hallowed to be represented in any proceedings under the 499 Central Act (not being a proceeding in which the legality or propriety of an order of dismissal, discharge, removal, retrenchment, termination of service or suspension of an employee is under consideration), except through the recognised union; and the decision arrived at or order made, in such proceeding shall be binding on all the employees in such undertaking; and accordingly the provisions of the Central Act, that is to say, the , shall stand amended in the manner and to the extent specified in Schedule I." Does Sec.