As I have had to take so much time off due to frequent hospitalisations it has been difficult hiding my illness. In the end I told my boss I had mental health issues and he has been nothing but supportive since. I work casually in retail (minimum wage) so it would be easy for him to fire me. The fact that the department I work in is short staffed may be my saviour. I am also damn good at my job. They have a hold on hiring at the moment and it takes months to train someone up in my department so moving people over is not so easy either. Still, I doubt I would specifically say I had BP as there is so much more stigma attached. Saying that, I just disclosed on FB that I have severe BP and PTSD and many of my co-workers are friends on there so I may have let the cat out of the bag anyway.