For over 30 years as a law professor at Indiana University, Professor Greenebaum's teaching and writing focused on dispute resolution and on the professional development of individuals, the organizations in which they work, and how the two relate to one another. His courses included Civil Procedure, Alternative Dispute Resolution, Mediation, Roles and Relations in Legal Practice, and Understanding Clinical Experience.
Pursuing his clinical interests, Greenebaum has served as a visiting social scientist at the Tavistock Institute of Human Relations and a visiting fellow at the Institute of Advanced Legal Studies at the University of London. He has published articles and clinical studies in a variety of law journals, and he has served on panels at scholarly conferences around the country.
He participated for many years in campus and university governance and served as president of the Bloomington Faculty Council and co-secretary of the University Faculty Council. In 2000, he was awarded both the W. George Pinnell Award for Outstanding Service and IU's Distinguished Service Award.
Since his retirement in 2000, Greenebaum has worked with the Community Justice and Mediation Center (CJAM) which provides community mediation and conflict resolution education for Bloomington and Monroe County His roles in CJAM include Board Member, Chair and Director of Programming, community mediation case manager, senior mediator, and trainer. Law students have participated in CJAM Mediation training programs and served on CJAM's mediator roster.