Well some of the contracts has this clause of paying all Visa/RP related costs in case the employee leave before the end of 1 or 2 years. If that is the case, they might ask you to pay following:

- Work Visa Cost - 300 QAR
- RP 1200~1300 QAR
- Medical 50 QAR

Again this is based on my knowledge. It might have changed or might be a bit different.