In case of group of employers engaged in similar industrial establishments, they may, after consultation with the concerned Trade Union, submit a joint draft of standing order under section 30 of the Code and the provisions of these rules shall apply:

Provided that the joint draft of standing orders, in cases of group of employers engaged in similar industrial establishments, shall be drafted and submitted to the Additional Chief Labour Commissioner (Central), who shall, in consultation with the concerned certifying officers, certify such joint draft standing orders, after recording reasons therefor:

Provided further that the certifying officer shall give notice to the concerned parties and provide reasonable opportunity of being heard before certifying the standing orders.