Is There Any Compulsion To Have A Weekly Leave For Labour?

Is there any compulsion to have a weekly leave for labour? What if labour needs to work in a factory without any leave? What are the consequences if labour himself works for overtime(more than 48 hours a week)?

See there are many laws that will forbid the occupier of the factory from using such labour and yes weekly holidays are mandatory :-
1) Factory Act :- See this Working Hours Under Factories Act 1948
2) Payment of Wages Act
3) Weekly holidays Act 1942
Also the onus is on occupier to not let worker work more then stipulated time.

Generally speaking one and a half day off is required every week. For more details check different labour laws/ Acts which are particularly applicable to your establishment.
The need of the factory is important. If the factory needs to run 24x7, then engage labours in three shifts. Just because you need to run the factory everyday, does not mean one has to work everyday.
If any labour is working more than the prescribed limit of work per week, then the company is liable to pay him the overtime wages. The plea of "labour himself works for overtime" is irrelevant and does not have any meaning. If he is working overtime, he is entitled to overtime wages provided that no law is broken to that effect.

dear friend it is compulsory to have a day as weekly off for every employee. Please go through the ACT.
V.Murali