[aaronf]

Working consistent long hours does not mean you're getting more done. I believe RescueTime has data showing the average person at work 8-hours a day is only working 2-4 hours. The people I know who are consistently first in and last out are not getting more done - in fact they're usually doing it to make up for something. One theory on productivity says procrastinators and workaholics have the same core issue - but respond to it in opposite ways.

This reminds me of the Seinfeld episode when George Castanza leaves his car at work so his boss thinks he's always there.

We need to stop measuring productivity by hours worked. Instead, productivity should be about finishing what you set out to do. If that only takes 4 hours, GO HOME. Plan the next day. Get some rest. Your output will be higher, and you'll be healthier and happier.