1996-Present Professor, The University of Tennessee at Martin, Tennessee
2010-2010 USAID Visiting Scholar, Al-Quds University, Jerusalem, Palestine
2003-2005 Visiting International Scholar, American University of Beirut.  Beirut, Lebanon
2000-2001 Executive Director, Research Department, Palestinian Monetary Authority (Central Bank), Ramallah, Palestine
2000-2001 Vice President for Administrative and Financial Affairs/Dean of College of Business and Financial Sciences, Arab American University, Jenin, Palestine
1998-2001 Visiting Professor, American University of Armenia, Yerevan, Armenia
1992-1997 Associate Professor, the University of Tennessee at Martin, Tennessee
1995-1995 Research Scholar and Head of Economic and Social Studies Division. July – August 1995. The Emirates Center for Strategic Studies and Research, UAE
1984-1992 Assistant Professor, Wayne State University
1988-1992 Adjunct Professor, Eastern Michigan University
1981-1984 Graduate Assistant and Research Assistant, University of Alabama
1980-1981 Financial and Accounting Manager, American Family Insurance Co., Minneapolis, Minnesota
1977-1979 Instructor, Mankato State University
1975-1977 Graduate Assistant, Mankato State University
1974-1975 Accountant & Budget Officer,(Intern) Mankato  State university’s Student Activity Account      
1972-1973 Manager, Red Fez Restaurant, Lansdale, Pennsylvania 
1967-1971 Educator, Buhtary Elementary School, Jericho, Palestine.