Compliance with PF and ESI Acts
In case you are already covered under the PF & ESI Acts, then you will continue to be liable for due compliance with them. As you are proposing to engage contract labor to carry out the work, in case of prior coverage, you will have to ensure that the contractor complies with the requirements; otherwise, you will have to pay.
In case you do not have coverage under both Acts, then you don't have to worry about them.