(1) The notice of lock-out referred to in sub–section (2) of section 62 shall be given in Form-XII by the employer of an industrial establishment to the Secretary of every registered Trade Union relating to such industrial establishment by speed post or electronically, endorsing a copy thereof to the concerned conciliation officer, Chief Labour Commissioner (Central) and the Secretary, Ministry of Labour and Employment electronically.

(2) The notice referred to in sub-rule (1) shall be displayed conspicuously by the employer on the notice board or on electronic board at the main entrance to the industrial establishment and a copy of the said notice may also be posted on the designated portal, if any, of such industrial establishment and the date of receipt of such notice by the conciliation officer shall be the date of receiving the notice for the purposes of clause (a) of sub-rule (1) of rule 23.

(3) If the employer gives to any person employed by him a notice of lock-out, he shall, within five days from the date of such notice, inform electronically the same to the concerned conciliation officer and the Chief Labour Commissioner (Central).