You need to ask your contractor to obtain their own PF/ESI code nos, as this will be
proved to be good in future not only for contractor but also to the principal employer, and ask them to remit contributions for their own employees.
To further safeguard the interest of principal employer, you can ask them to submit a declaration
as per text reproduced below, on a monthly basis, alongwith their Service bill for payment.
quote
DECLARATION
This is to confirm that we are complying with various provisions of statutory requirement of Employees State Insurance Act, 1948 and Employees Provident Fund & Miscellaneous Provisions Act, 1952, in respect of all -- (type of employees deployed) deployed at various locations of M/s --(Name of Principal employer with address) and that we have remitted contributions towards ESI and PF in respect of all --(type of employees deployed) at M/s --- (Name of principal employer) for the month of ---- to the respective statutory authorities and a copy of remittance challan/ECR is also attached for record purpose.
Dated this …. Day of Two thousand Twenty only
For --- (Name of contractor)
Signature with seal
unquote