everything is normal in Qatar.
Actually the issuance of Work visa takes maximum 3 days. But this is if:
- application is submitted by the Company (they might have forgotten about it)
- the Company already has a Quota for this particular position +nationality +gender (if not, then it might take forever to get an approval)
- the application isn't going through the additional security check (at this stage visa even might be rejected)
But.. if any of the above mentioned factors aren't there.. no one can tell when and what and how long...
good luck on waiting.. and hey, there is nothing wrong with considering other job offers.. your bro might get even something better.