Conducts research focusing on the areas of rewards systems, performance management and HRIS. Books include Compensation Theory and Practice, The Compensation Sourcebook, The Performance Imperative, Rewarding Government Employees, and the Executive Handbook on Compensation. He has worked over the last five years as a consultant to the Bureau of Labor Statistics on the National Compensation Survey. He was a presidential appointee to the Federal Salary Commission. He served as chair of the Research Committee of the American Compensation Association. He has testified before a Pay Equity Tribunal in Ontario as an expert witness in the area of job evaluation and pay setting practices, before the House Committee on Education and the Workforce as an expert on variable pay and the Fair Labor Standards Act, and in other compensation-related cases. He has published articles in many scholarly and professional journals.