Travieso: the contract you are being given/offered should have some sort of clause in which termination of contract is covered and what are the pros/cons of such decision.

It is said as per Qatar labour law (QLL) that you are "entitled" at least to cover 1 year full contract before changing job/sponsor so if you decide to quit before that time the company/sponsor could ask you to cover the whole 1 year.

Also consider the fact of the company giving NOC at the time of resignation/termination of contract on either side (employer/employee) otherwise you can not stay in the country and will have to leave to home country and will be banned for 2 years from re entry Qatar.

Even though recently there was a decision in which no company/no sponsor can take the employee passport and hold to it still some people do it. (maybe there is need to reinforce the applicability of the law)

On the other hand I would suggest to you to read the QLL to understand a little bit more of what are actually your rights/duties while in Qatar. And remember the english translation of the QLL is just a reference since the legal/valid document for any dispute is the one in arabic.

http://iloveqatar.net/forum/file.php?20,file=554,filename=LABOUR_LAW_STA...

Regards!!