dispute or any matter appearing to be connected with or relevant to, the dispute to a Tribunal for adjudication: Provided that where the dispute relates to a public utility service and a notice under section 22 has been given, the appropriate Government shall, unless it considers that the notice has been frivolously or vexatiously given or that it would be inexpedient so 264 to do, make a reference under this subsection not withstanding that any other proceedings under this Act in respect of the dispute may have commenced," section 33 (Ibid): Conditions of service etc., to remain unchanged during pendency of proceedings During the pendency of any conciliation proceedings or proceedings before a Tribunal in respect of any industrial dispute, no employer shall (a) alter, to the prejudice of the workmen concerned in such dispute, the conditions of service applicable, to them immediately before the commencement of such proceedings; or (b) discharge or punish, whether by dismissal or otherwise, any workman concerned in such dispute, save with the express permission in writing of the conciliation officer, Board or Tribunal, as the case may be." 33 A (Ibid): Special provisions for adjudication as to whether conditions of service etc., changed during pendency of proceedings: " Where an employer contravenes the provisions of section 33 during the pendency of proceedings before a Tribunal, any employee aggrieved by such contravention, may make a complaint in writing, in the prescribed manner to such Tribunal and on receipt of such complaint that Tribunal shall adjudicate upon the complaint as if it were a dispute referred to or pending before it, in accordance with the provisions of this Act and shall submit its award to the appropriate Government and the provision of this Act shall apply accordingly.