Medical tests for HepB positive IT professionals

Hi All, I am looking for info regarding an IT professional who is HepB positive ( but in a non-infectious state) which means that the virus is inactive. So would such a person be able to get a work permit or not? Who has the final say in whether a HepB positive person can get a work permit or not? the employer or the qatari gov? I have had conflicting reports from different portals on the internet and cant seems to find the right answer. Any authentic answer would be really appreciated. Z