Unfortunately I am not working at the moment. But when I do I certainly hope it will be in the field my degree is in!
I am currently a medical student. But I have, in the past, worked in fields related. I worked in and OR, taught MCAT prep courses, and worked in a microbiology lab. My undergrad degree is in Cellular/Molecular biology.
While I agree there are many whose degrees don't actually pertain to their work, I certainly hope I don't fall into that.