Aparajitha, being an end-to-end Labour Compliance solution company with extensive experience in labor law, has not provided any solution to Ketan's query.
Dear Ketan,
Each of your contractors is expected to have separate ESI registration. If not, as the principal employer, it becomes your duty to enroll the workers engaged by the contractor(s) under your own ESI rolls and contribute both the employer's share as well as the employees' shares. After that, you can deduct the amount contributed by you from the contractor.
Regarding job work done outside the premises of your factory, ESI will not apply provided the job is not supervised by you, and the job contractor is not exclusively working for you. If the job worker is solely working for you and not taking on any other work, it will be considered a "notional extension" of the factory, and the workers employed there will come under ESI. If the outside job contractor has a separate ESI registration, then it is their responsibility to handle the contributions.
If the job work is done within your factory premises, you are required to pay the contribution.
Regards,
Madhu.T.K