[robswc]

Figure Little's law may be a bit applicable to the discussion :)

https://en.wikipedia.org/wiki/Little%27s_law

You never really want "100% utilization" (something I feel a lot of managers don't quite understand).

The answers here are very interesting. I work more than 40 hrs (my own business stuff) and I always wish there was more time in the day, lol. Never worked at a big company but I do imagine if people are only "working" 20 hrs that's a sign that they could "work-less." IMO as long as stuff gets done (in a timely manner) that's all that should matter.