Professor and Chairman, Department of Industrial Engineering and Management Systems, University of Central Florida, Orlando, Florida (8/1/2007-present)
Executive Director, Institute for Advanced Systems Engineering, University of Central Florida, Orlando, Florida (8/1/2008-present)
Professor, Department of Industrial Engineering, J. B. Speed School of Engineering, University of Louisville, Louisville, Kentucky (7/1/1993 – 7/31/2007)
Director, Center for Industrial Ergonomics, J. B. Speed School of Engineering, University of Louisville, Louisville, Kentucky (7/1/1987 – 7/31/2007)
Senior Graduate Faculty, Graduate School, University of Louisville, Louisville, Kentucky (1985 - 2007)
Associate Faculty, Department of Bioengineering, J. B. Speed School of Engineering, University of Louisville, Louisville, Kentucky (7/1/2006 – 7/31/2007)
Research Fellow, ASSE Foundation / Liberty Mutual Research Institute for Safety, Hopkinton, Massachusetts (Fall 2006)
J. B. Speed School of Engineering Alumni Scholar for Research, University of Louisville, Louisville, Kentucky (2004-2006)
Distinguished Visiting Scholar and Assistant Director for International Cooperation, Central Institute of Labor Protection, Warsaw, Poland (8/15/1998 –12/31/1998)
Associate Professor, Department of Industrial Engineering, J. B. Speed School of Engineering, University of Louisville, Louisville, Kentucky (7/1/1987 - 6/31/1993)
Fulbright Scholar and Visiting Professor, Occupational Safety Engineering, Tampere University of Technology, Tampere, Finland (9/1/1990-4/30/1991)
Visiting Assistant Professor, Department of Industrial Engineering, Iowa State University, Ames, Iowa (8/1/1982 - 5/30/1983)
Assistant Professor, Department of Industrial Engineering, J. B. Speed School of Engineering, University of Louisville, Louisville, Kentucky (6/1/1983 - 5/30/1987)
Associate in the Department of Psychology, University of Louisville, Kentucky (1985 - 1991)
Research Assistant, Department of Industrial Engineering, Texas Tech University, Lubbock, Texas (9/1/1979 - 7/30/1982)
Research Associate and Teaching Assistant, Institute of Production Engineering and Systems Management, Technical University of Wroclaw, Wroclaw, Poland (10/1978 - 8/1979)
Industrial Trainee, DOLMEL: Electrical Machines Factory, Wroclaw, Poland (Summer of 1977)
Industrial Trainee, ELWRO: Computer Manufacturing Company, Wroclaw, Poland (Summer of 1976)