91. In case the nature of the work requires a working day in excess of the normal, two or more shifts shall be engaged.
92. Where there are several shifts, each shift shall work the normal working hours; the change of shifts must take place during the time fixed by the rules of the internal management without interfering with the normal course of work.
93. As a general rule, work in excess of the normal hours (overtime work) shall not be permitted.
94. Overtime work may be permitted in the following exceptional cases:
(a) Where the work is necessary for the prevention of a public calamity or in case the existence of the Soviet Government of the Russian Socialist Federated Soviet Republic or human life is endangered;
(b) In emergency public work connected with water supply, lighting, sewerage or transportation, in case of accident or extraordinary interruption of their regular operation;
(c) When work has to be completed which owing to unforeseen or accidental delay due to technical conditions of production could not be completed during the normal working hours, if leaving the work unfinished would cause damage to materials or machinery;
(d) On repairs or renewal of machine parts or construction work, wherever necessary to prevent stoppage of work by a considerable number of wage earners.
95. In the case described in subdivision "c" of Section 94, overtime work is permissible only with the consent of the respective trade union.
96. For overtime work described in subdivision "d" of Section 94 permission must be obtained from the local labor inspection, in addition to the permit mentioned in the preceding section.
97. No females and no males under 18 years of age may do any overtime work.
98. The time spent on overtime work in the course of two consecutive days must not exceed 4 hours.
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