Section 58(2)(b) in Industrial Disputes (Punjab) Rules, 1958
(b)in the case of workmen :-(i)The President and Secretary of a Trade Union of workmen; or(ii)The President, Vice-President, Secretary or General Secretary of the Trade Union of workmen and workmen preferably one of the aggrieved workmen; or(iii)Five representatives of the workmen duly authorised in this behalf at a meeting of the workmen held for the purpose.