This post from The Nub relates how the managers of a BMW Mini Plant in England have saved nearly twenty million dollars in the last two years by listening to their employees:

Every employee has a target of implementing three ideas a year to improve the business. 11,064 ideas were put into practice from a total of 14,333 submitted in 2003, an 80% implementation rate.

When is the last time you asked your employees for an idea to improve your practice?