The implication is that their de facto salary is higher than that figure by some amount, due to their innate enjoyment of what they're doing. I think jobs with

The implication is that their de facto salary is higher than that figure by some amount, due to their innate enjoyment of what they're doing. I think jobs with high innate enjoyment (teaching) often end up having a lower de jure salary than jobs with similar requirements but that have very low innate enjoyment (oil rig worker).