Please let us know, if the amount is paid to different labours or its a consolidated payment to one contractor. If it's a consolidated payment then you may face troubles but if it's a payment to different persons and each payment/invoice does not exceed 20000 a day and you have sufficient documents to prove the same then you need not to worry.
Please feel free to call/ revert in case of any doubts
Thanks and Regards
Abhishek Dugar
CA CS B.Com