William S. Marras PhD, is a Professor in the College of Engineering and the College of Medicine at The Ohio State University, a certified professional ergonomist, and a fellow of the American Institute of Medical and Biological Engineers, the Human Factors and Ergonomics Society, the International Ergonomics Society, and the Ergonomics Society. He holds two patents for devices for monitoring motion of the spine. He is an ergonomic consultant for the U.S. Department of Labor, Ford Motor Company, RCA, Honda, and other corporations and associations. He has had over 180 articles published in various medical and ergonomic journals and has coauthored several books on occupational ergonomics. He is currently the chair of the Human Factors Committee within the National Academy of Sciences.