I've always had a second job while flying and the company doesn't care if you have a second job. If you are out on a long time medical leave or long term disability and can't do our job, then you need permission from the company to work at another job. I have heard that there are over 8000 applicants so far for the 320 jobs. I guess if you are asked as a prospective employee if you would give up your current job and if you said "no", then you would be eliminated. And yes, if you don't have a passport, you could be eliminated. Guess out of 8000, the company doesn't need to wait for paperwork etc. and the time it takes to get a passport when they can choose applicants that are all set.