Dear Naresh,
Legal Working Hours in Factories
Subject to the provisions of Section 51, no adult worker shall be required or allowed to work in a factory for more than nine hours in any day. However, the appropriate government may make rules in respect of adult workers in factories, providing for exemptions to such extent and subject to conditions as may be prescribed, for workers engaged in urgent repairs, from the provisions of Sections 51, 52, 54, 55, and 56.
If workers are engaged in any work that, for technical reasons, must be carried out continuously, they may be exempted from the provisions of Sections 51, 52, 54, 55, and 56 of the Factories Act, 1948.
Regards,
Shivakumar.KM