From his website:http://www.marketplaceleaders.org/os/
Os Hillman is president of Marketplace Leaders, an organization whose purpose is to help men and women discover and fulfill God’s complete purposes through their work and to view their work as ministry.
Formally Os owned an advertising agency but is now an internationally recognized speaker on the subject of faith at work. He is the author of 14 books and a daily email devotional called TGIF Today God Is First which has over a quarter of a million daily subscribers worldwide. Os’ latest boo is Overcoming Hindrances to Fulfill Your Destiny and Change Agent. He developed and teaches the Change Agent Intensive weekend training sessions which is now available as a DVD Video Course. Os also gives leadership to a new initiative called The Change Agent Network. Os has been featured on CNBC, NBC, LA Times, New York Times, and many other national media as a spokesperson on faith at work.
Os is also president of Aslan, Inc. which provides a leading online Christian bookstore to serve the “faith-at-work” movement called www.TGIFbookstore.com to serve the needs of Christians in their workplace calling.
Os serves as Visiting Instructor at Regent’s School of Undergraduate Studies (www.Regent.edu), attended the University of South Carolina and Calvary Chapel Bible School, a ministry of Calvary Chapel of Costa Mesa, California.