Section 10B(3) in Industrial Disputes (Central) Rules, 1957
(3)Where the Labour Court, Tribunal or National Tribunal, as the case may be, finds that the party raising the dispute though directed did not forward the copy of the statement of claim to the opposite party or parties, it shall give direction to the concerned party to furnish the copy of the statement to the opposite party or parties and for the said purpose or for any other sufficient cause, extend the time-limit for filing the statement under sub-rule (1) or written statement under sub-rule (2) by an additional period of 15 days.