Paul Hebert from Incentive Intelligence writes a post called The Secret Motivation Program Your Manager Doesn’t Want You To Know About:
I’m guessing 90% of the failure to engage teams is about managers telling people how to do things instead of focusing on the why. In most cases people can figure something out if they know why it’s important. Managers typically spend more time telling people how instead of why. Tell your folks why they do what they do and then get out of the way.