Put yourself in your staff's shoes (if you're not there already!). If you are told what to do, but aren't told why and what's in it for you, what is the impetus to do it? Why is this program worth the effort and why should you add more work to your already full plate?
"Lean" refers to an approach of continuous improvement and the elimination of non-value-adding activities. "Green" refers to practices and actions that reduce negative impacts on the environment. Are "lean" and "green" principles complementary business practices?