Section 6(3)(b) in The Orissa Industrial Disputes Rules, 1959
(b)in the case of workmen, a substantial majority of whom are not members of any trade union, to any one workman who has attested the application made under Rule 3 and in this case a copy of the notice shall also be sent to the employer who shall display copies thereof on notice boards in a conspicuous manner at the main entrance to the premises of the establishment.