Anxiety and depreasion

What's your opinion are these good reasons to not have a job? My SIL says she can't get a job because of her anxiety and depression. I've never once seen her anxious she's so outgoing and not afraid of anyone. Says she doesn't care what anyone thinks blah blah blah then why can't you work? She has no physical disabilities. Legit reasons or bs? I'm ignorant to the subject so curious maybe I can educate myself some.