Pros
I'd have to say the best reason to work for Kaiser Permanente is the benefits. My daughter and myself have the best coverage imaginable. No copays for anything... office visits, surgery, hospital stays.... we only pay $5 for prescriptions and that is it.
Cons
I don't know how it is in other areas, but the Service Area that I work for does not do a very good job of showing their appreciation for a job well done. They make a lot of promises and then don't back them up, and it's always someone else's fault. I have received nothing but excelent reviews and taken on more work than I was hired to do, but the promotion that I was promised never came. And their explanation, someone else said that they don't have the budget for it right now. Obviously they have the budget, but why spend it if you don't have to?