Professor Reuben joined the Law School in 2000, coming from Harvard Law School, where he was a William and Flora Hewlett Senior Fellow in Dispute Resolution and an Instructor in Negotiation. He had previously earned his Masters and Doctor of Law at Stanford Law School.

Professor Reuben is the co-author of one of the country's leading ADR casebooks, Dispute Resolution & Lawyers (3rd ed. 2005) (with Leonard L. Riskin, James Westbrook, Chris Guthrie, Timothy J. Heinsz, and Jennifer K. Robbennolt). His articles have appeared in the California Law Review, UCLA Law Review, Harvard Negotiation Law Review, Law & Contemporary Problems (Duke), and the SMU Law Review, among others. His research emphasizes the relationship between dispute resolution and law, as well as democratic governance. He is also one of the nation's leading authorities on confidentiality in ADR processes, and served as a Reporter for the Uniform Mediation Act, which has already been adopted in several states. He is a Senior Fellow at the law school's Center for the Study of Dispute Resolution, and co-director of the Center for the Study of Conflict, Law & the Media, a partnership of the Law School and the internationally acclaimed Missouri School of Journalism.

A lawyer and journalist, Professor Reuben covered the U.S. Supreme Court and other legal issues for the ABA Journal, the Los Angeles and San Francisco Daily Journals, and other publications for more than a decade. He was nominated for a Pulitzer Prize for his coverage of the U.S. Supreme Court in 1991. He was the Editor of Dispute Resolution Magazine, a quarterly publication of the American Bar Association, from 1996-2007, and currently serves as the founding chair of the ABA Section of Dispute Resolution's Committee on Public Policy, Participation, and Democracy. He served for two years as the Associate Director of the Stanford Center for Conflict and Negotiation at Stanford University, and on the Board of Directors of the Conflict Resolution Information Project for five years. He regularly serves as a judge for national competitions for scholarly achievement in dispute resolution, has served as a mediator for a U.S. Department of Justice training program in mediation for assistant U.S. attorneys, and has consulted with the World Bank International Finance Corporation.

Professor Reuben's primary teaching assignments at Missouri are Negotiation, Conflict Theory, Election Law, Legislation, Local Government Law, and Administrative Law. He has also taught at Stanford Law School, Harvard Law School, Pepperdine Law School, Hamline Law School, Central European University in Hungary, and Johannes Kepler University in Austria.