Dr. Hans-Gerd Ridder is Professor at the Leibniz University of Hanover (Germany), Faculty of Business Administration.  He is educated in Management Sciences and responsible for Business Administration and Human Resource Management. He has held guest professorships in Innsbruck and Vienna (Austria).

His research interests include Strategic Human Resource Management, Nonprofit and Public Management. Current research projects focus on change processes in public and nonprofit organizations. He has recently published on case study research, the implementation of Accrual Accounting in German Municipalities, and the implementation of Diagnosis Related Groups in hospitals.