In section 2 clause (kkk) was added to say: "lay off" (with its grammatical variations and cognate expressions) means the failure, refusal or inability of an employer on account of shortage of coal, power or raw materials or the accumulation of stocks or the break down of machinery or for any other reason to give employment to a workman whose name is borne on the muster rolls of his industrial establishment and who has not been retrenched Explanation Every workman whose name is borne on the muster rolls of the industrial establishment and who presents himself for work at the establishment at the time appointed for the purpose during normal working hours on any day and is not given employment by the employer within two hours of his so presenting himself shall be deemed to have been laid off for that day within the meaning of this clause: Provided that if the workman, instead of being given employment at the commencement of any shift for any day is asked to present himself for the purpose during the second half of the shift for the day and is given employment then, he shall be deemed to have been laid off only for one half of that day: Provided further that if he is not given any such employment even after so presenting himself, he shall not be deemed to have been laid off for the second half of the shift for the day and shall be entitled to full basic wages and dearness allowance for that part of the day. '" (1) [1952] II Labour Law Journal, 37.