Ans:
Some companies ask for a specific period of service under an agreement or bond. If you leave before this period, you may have to return the initial joining bonus and/ or notice pay.
For example, if you have signed an agreement to serve a company X for 2 years and receive a joining bonus of Rs 50,000/-. After six months, you want to join company Y immediately. In that case, you will have to reimburse the joining bonus of Rs 50,000 and/or serve your notice period or pay back the notice period pay of 1 or 3 months as laid out in your contract.