69(4)
The hours of work mentioned in Rule 64 may exceed under the followings works and circumstances in respect of dock, mine and building or other construction work, namely:-
69(4)(a) urgent repairs;
69(4)(b) work in the nature of preparatory or complimentary work;
69(4)(c) work which is necessarily so intermittent that the intervals during which they do not work while on duty ordinarily amount to more than the intervals for rest;
69(4)(d) work which for technical reasons must be carried on continuously;
69(4)(e) engaged in making or supplying articles of prime necessity which must be made or supplied every day;
69(4)(f) engaged in a process which cannot be carried on except during fixed seasons;
69(4)(g) engaged in a process which cannot be carried on except at times dependent on the irregular action of natural forces;
69(4)(h) engaged in an engine-rooms or boiler-houses or in attending to power-plant or transmission machinery;
69(4)(i) engaged in process on account of the break-down of machinery;
69(4)(j) engaged in the loading or unloading of railway wagons or lorries or trucks or ships;
69(4)(k) exceptional press of work; and
69(4)(l) engaged in any work, which is notified by the Central Government in the Official Gazette as a work of national importance: Provided that no worker shall be allowed to work overtime exceeding one hundred forty-four hours in any quarter of a year: Provided further that for overtime, a worker shall be paid wages as per section 27 of the Code at the end of each wage period.