There are different authorities under different Acts who will grant registration or enforce the enactment to the establishments. As such, the Labour Department would be the registering authority under the Shops and Commercial Establishments Act, the Provident Fund Organisation will enforce PF to your establishment, Employees State Insurance Corporation will enforce ESI, again the Labour department will ensure that the employees are paid at least the minimum rates of wages as fixed by the government, the women employees are paid maternity benefits etc etc.
For a general idea please find a Ppt available in my blog.
Madhu.T.K: Labour Laws in India- updated
5th January 2011 From India, Kannur