Why employs have to work
In the following video, Dave Pink discusses the three factors which motivate knowledge workers. It is well worth the 11-minutes you must invest to watch it.
Dave makes it clear that once a professional is paid enough money to assuage their basic needs, the factors which motivate them are; mastery, challenge and an ability to impact a meaningful mission. Such a sense of purpose is generally not derived from simply making a profit, as described more fully in Peace & War Corps. Your primary responsibility is to maximize your employees’ ability to pursue these three tenants of professional satisfaction.