Professor Hostetler's main research and teaching interests are in strategy, decision-making, leadership, high performance teams, and change management. He has taught classes in the MBA program, Executive MBA program and the Cornell/Queen's Boardroom MBA program, as well as many executive education programs. The author of on-line courses in strategic thinking, scenario planning, leadership and team effectiveness for eCornell, Cornell's distance learning subsidiary, Hostetler is also responsible for the development of custom executive programs at Johnson, and has designed programs for a variety of international companies including Osram, Citigroup, Nypro, Areva, Sara Lee, Johnson & Johnson, Bausch and Lomb, GlaxoSmithKlein, Hyundai, the Asian Development Bank, LIG, and Schwan's Food Co.
As an associate dean at Johnson 1992-2003, Hostetler oversaw all public and custom executive programs. In addition, he oversaw the launch of Johnson’s Executive MBA program and served on the committee that developed the Cornell/Queen's Boardroom MBA Program.
Prior to joining Cornell University, Hostetler was assistant dean for executive education at the Fuqua School of Business, Duke University. His prior experiences also include positions with St. Mary's Medical Center, the University of Tennessee, and the governor of Kentucky. Hostetler is active in the development of global executive education through the University Consortium for Executive Education (UNICON) and the International Consortium for Executive Development Research (ICEDR). He is an emeritus trustee of UNICON.