Section 25-C of the Industrial Disputes Act, 1947 provides that whenever a workman (other than a badli workman or a casual workman) whose name is borne on the muster- rolls of an industrial establishment and who has completed not less than one year of continuous service under an employer is laid-off, whether continuously or intermitently, he shall be paid by the employer for all days during which he is so laid-off, except for such weekly holidays as may intervene, compensation which shall be equal to fifty percent of the total of the basic wages and dearness allowance that would have been payable to him had he not been so laid-off.