Section 21

(2) Nothing in sub-section (1) shall apply to— (a) any work performed by any person while employed in accordance with a system of shifts approved by the inspector, or (b) the work of sizing, calendering, finishing, sewing or tailoring in textile factories, or L 146 Factories. [ACT XII (Chapter IV.—Hours of Employment and Holidays.) or in cloth-printing works, or in bleaching or dyeing works, or (c) work on urgent repairs executed in railway or tramway workshops or running sheds, or in engineering works or ship-repairing works, or (d) any work mentioned in Part A or in Part B of Schedule I, or (e) the factories mentioned in Part C of the said Schedule. (3) Where it is proved to the satisfaction of the Local Government— (a) that any class of work not specified in Part A of Schedule I is of an urgent nature or is such as in the interests of efficiency is commonly performed while the main manufacturing process of the factory is discontinued, or (b) that there is in any class of factories not specified in Part B of the said Schedule any work which necessitates continuous production for technical reasons, or (c) that any class of factories not specified in Part C of the said Schedule requires, by reason of the exigencies or special circumstances of the trade carried on therein, an uninterrupted working day, the Local Government may, subject to the control of the Governor General in Council, by notification in the local official Gazette, exempt,— in case (a), such class of work, in case (b), work of the nature described in such class of factories, in case (c), such class of factories, from the provisions of sub-section (1) on such conditions, if any, as it may impose. CHAPTER IV. HOURS OF EMPLOYMENT AND HOLIDAYS. 21. (1) In every factory there shall be fixed for each working day, at intervals not exceeding six hours, periods of not less than half an hour, during which all work shall be discontinued.