Section 80A(2) in Bombay Industrial Relations Act, 1946
(2)In such case the Labour Court shall also direct notice of the filing of the application to be given to all such employees at the applicant's expense either by personal service or where from the number of employees or any other cause such service is not reasonably practicable, by public advertisement and by causing the notice which is translation in a regional language to be affixed by the applicant at the entrance through which the majority of the employees enter the premises for their work. The person affixing the notice and publishing the advertisement shall file an affidavit in the Court of his having done so.