The Principal Employer (PE) might offer contracts to various service agencies based on the project's needs and specialization/skills. Permitting subcontracting the job is primarily the duty of the PE; nevertheless, it is the main contractor's responsibility to obtain a Contract Labour license, considering the total estimated manpower to be deployed, including the subcontractor's manpower strength. The main contractor is also responsible for maintaining A, B, C, and D registers and filing returns, including for subcontractor workers.
If there is no express provision in the contract to subcontract the job, all statutory payments must be made using the primary contractor's PF/ESI Code No., and the employer's contributions must be recovered from the subcontractor's invoices. Please note that Form III replaces the former certificate from the principal employer in Form V.
Our friend Mr. Prabhat has already discussed the applicability under the CL(R&A) Act, 1970, and I have simply expanded on a few points.
Regards,
Suresh