As per our constitution LABOUR is in the concurrent List.ie both the central and State Govt can legislate on the subject.
The relevent list is as below
"23. Social security and social insurance; employment and unemployment.
24. Welfare of labour including conditions of work, provident funds,
employers’ liability, workmen’s compensation, invalidity and old age pensions and maternity benefits."
But we have a convention.labour subject is discussed in the TRIPARTITE FORUM ie Indian Labour Conference,subsequently necessary legislations intruduced in the parliament.
such act will be applicable to the whole of India.But state can amend relevant sections and also is empowered to make rules for the implementation of the act.
In every act appropriate Govt is properly defined.Depending on the type of organization ,it can easily be clarified.
you need to specify the issue ,know relevent act and find the appropriate govt.
pls discuss with couple of people.