A circular issued by the state labour department said, this order will be enforced for the next 15 days.
Medicine shops have been exempted under this order.
All restaurants in the state will open from 11 am till 10 pm for the next 15 days.
An official of the state labour department said, the state government has taken this decision in view of the acute power crisis arising out of the current heat wave.
The order will be in force with immediate effect.
The official said, the state government hoped that the enforcement of this order will help to alleviate the problems of people, in particular the farmers, to some extent.
The official warned that action would be taken against those violating the order.