Professor Render has been a member of the law faculty since 1968. Prior to joining the University of Louisville, he was a staff attorney with the U.S. Atomic Energy Commission from 1962 to 1965, an Assistant U.S. Attorney from 1965 to 1967, and an associate with Greenebaum Barnett Wood & Doll from 1967 to 1968. He is the faculty director of the clinical externship program and teaches in the areas of evidence and labor law.

Professor Render received his B.A. from Western Kentucky University, his LL.B. from Vanderbilt University and a LL.M. degree from Harvard University in 1970. He is an active member of the Louisville and American Bar Associations, the Louisville Labor Management Committee, the American Arbitration Association and the National Academy of Arbitrators. Professor Render is on the Executive Board of the U.S. Branch of the International Society of Labor Law and Social Security. He is also the editor of the Bulletin of that organization. His University and School of Law activities have included serving as a hearing officer for staff grievances, and committee membership on the Faculty Recruitment Committee, the Distinguished Teaching Award Committee and the University Academic Review Committee. During his career at the University of Louisville he has taught Property, Evidence, Labor Law and directed the Law School's externship programs.

Professor Render's recent publications and research have focused on labor law issues. In recent years Professor Render has published articles in the Comparative Labor Law and Policy Journal, the Journal of Employment and Labor Law, and the California Western Journal of International Law. He is a founding member of the law school's Carl A. Warns Labor and Employment Law Institute.