Yes, your work history is part of your files but this is just a medical test, since disability is about medical issues. With mental illnesses it gets difficult, and probably why you will need a lawyer to pursue, since "plays-well-with-others" is technically not a medical issue and getting along with your psychiatrist, therapist, and others in your life but not any/all work people might look inconsistent? They may decide something like you are trying the wrong line of work (bird trying to swim) or probably could work with fewer coworkers or a different sort of boss, etc. They won't necessarily tell you that though if you get rejected, just that there isn't enough evidence to support that you cannot work. Your files show that you do not work, not that you cannot work. Lad explains it better but it's not quite so cut and dried; most people get denied at first because if you have worked and/or do have structure (like work) in your life (i.e., go to school, appointments, etc. on your own regularly) then it doesn't immediately make sense that you could not do the same at some job.