Section 25M(8) in The Industrial Disputes Act, 1947
(8)Where no application for permission under sub-section (1) is made, or where no application for permission under sub-section (3) is made within the period specified therein, or where the permission for any lay-off has been refused, such lay-off shall be deemed to be illegal from the date on which the workmen had been laid-off and the workmen shall be entitled to all the benefits under any law for the time being in force as if they had been not laid-off.