You have no privity of contract with this labour(s) inasmuch as they were not your direct employees.
Since, they acted on the command and direction of the sub-contractor, case if any could have only been filed against him and not you.
If in the contract, both parties have agreed to make way for Court at Hyderabad to have jurisdiction in the matter, the instant complaint pending in the Orrissa court is not maintainable.