Newsweek has a very interesting article by no less than Google's own CEO, Eric Schmidt.
In that article, named "Google: Ten Golden Rules", it is explained how Google has been inspired by Peter Drucker to manage their "knowledge workers".
It seems that they have been following Drucker's doctrine, according to which knowledge workers believe they are paid to be effective, not to work 9 to 5, and that smart businesses must "strip away everything that gets in their knowledge workers' way."
Google believes that in doing that kind of management those that succeed will attract the best performers, securing "the single biggest factor for competitive advantage in the next 25 years"
You may print the full article from: "Google: Ten Golden Rules - printer"