Below is a list of articles which relate to the health and work benefits of stand-up desks.
Are You Sitting Down? Why a Stand-Up Desk Might Save Your Life
Beware of the ChairSitting vs. Smoking
Stand-up desks can add years to your life
On May 26th, I found this article on Real Clear Science.Com http://fivethirtyeight.com/features/i-stand-corrected-about-the-best-kind-of-desk/