[daepp]

Regarding the two quotes posted by others:
needspace: "Companies today recognize that an engaged and motivated workforce MORE than pays for itself."
mreaid: "...your point about employee engagement is in my experience spot on."

If you can apply this concept to our military (unarguable the most effective in the world), they claim that their success is directly related to eliminating the draft. Most everyone who is there wants to be there. This produces a much happier and more motivated workforce - therefore I can see why needspace's research indicated the same.