Summary.
On a day off, taking a nap is a small but heavenly pleasure. Dozing at your desk isn’t—especially if a colleague walks in on you—but sometimes exhaustion just takes over. The 2008 Sleep in America poll, conducted by the National Sleep Foundation, found that nearly one-third of adults who work at least 30 hours a week have fallen asleep or become extremely drowsy on the job—behavior that employers often frown upon. Should they lighten up? Perhaps. In a knowledge-based economy that depends on sharp minds, a few minutes of shut-eye could be good for business.