I've seen both responses from people I know. One person has always been a bit of a workaholic, and used work as sort of a coping mechanism for anxiety. As one might imagine, they started working much much longer hours. Another person I know got in the habit of working from about 10 to 3 or so, to the point where I was worried for their job. I think the lesson is that people's relationship with work is just a highly individual, and people will have very divergent outcomes.