From my experience It is very difficult to get CID clearence for Clerical and Secretarial posts. Qatarization is the main reason. Also if husband has job in Petroleum companies they will not give clearence to wife for any Petroleum company jobs.... But for the technical posts, if they have no Qatar nationalities with same qualification what we have, they will give you the police clearence certificate. You have to submit all the papers in CID department Doha and after 10 days (they will tell you after 20 days) you can get the police clearence certificate if it is ok.You have to go there and collect it. If they say " contact to your company"...bad luck... no hope....better try next time for a new job...