I have friends that have gotten very good jobs after their masters and others that haven't. If you're going to play probability than masters will offer you better chance for better paid jobs. But in the end, it'll be up to you on how you present yourself and the experience and knowledge that you have. If you think the master degree for whatever field will present you with more options, than definiately go for it. Else, get a job, get some proper experience. You can always get your degree at a later date when you know what you're doing.