Clockwatchers aren't executive material.
Remember that when you're running out the door at 4:29pm.
Hey, Doug, how are the wife & kids?
Clockwatchers are smart. Never give your company time they didn't pay for, work to live don't live to work. All these stories of people not taking lunch for years and years, it's sad. Nobody's tombstone ever said they should have spent more time at work. I've been an executive, my employees loved me because my motto was: work your ass off for 8 hours a day, 5 days a week, get the job done, get out of here, have a life. I'm never impressed by people that spend vast long hours at work, and companies that are only impressed by long hours should be left.