I'm not sure if it's so; certainly relationship to and ownership of basic means of production mediates status or class.
(For example, I worked as a programmer at Queen's for a time. It was very easy for a programmer to make more than a junior faculty member (even a mid-level faculty member, for that matter) there. I assume it still is. However, it doesn't take a genius (or a university professor) to figure out who bossed who around).
marco