On the subject of workplace wellness, I highly reccomend "The Spirit and Science of Holistic Health" by Karen Carier & Jon Robison as well as "Life's Odessy" a corporat wellness packet that has been quite popular w/ companies interested in improving employee wellness among several US US companies, also devloped by Karen Carrier.
Perhaps you would be interested in reading this article:
A Edmans, "Does the stock market fully value intangibles? employee satisfaction and equity prices" Journal of Financial Economics 2011, 101, p 621- 640.