Well, yeah, THAT is paranoia! My AX recently told me his boss put a video camera over his work area and has a personal vendetta against him. AX just went on Zoloft and it doesn't seem to be helping--he gets paranoid BUT it's also based in reality--I mean, he's an unstable alcoholic so it's entirely possible he is screwing up at work.
He may be on Zoloft but his drinking negates the effects, anyway. You can't drink on anti-depressants and have them work.