Dear Rajat,
First of all I would like to inform that Service tax under reverse charge on "Supply of Manpower" and not on "recruitments".
Further, In case you have paid full 100% service tax under reverse charge, you have two options:
1. you may apply for refund of 25% of service tax (excess) paid within a period of one year or;
2. You may adjust for succeeding period liability in accordance with Rule 6(4A) of Service Tax Rules.
CENVAT Credit will be allowed only for 75% not for 25% you have paid in excess subject to eligibility.
In other case, Mr. Sathya has replied you well.