Interest in the field of Purchasing Social Responsibility (PSR) can be traced back as far as the late 1960's, however, in recent years researchers have returned to the concept as a subdivision of both Corporate Social Responsibility (CSR) and Sustainable Supply Chain Management (SSCM). Today, PSR finds itself at a critical juncture regarding its development with many remaining questions as to the scope, definition, and application in practice. This dissertation particularly analyzes the aspect of PSR application in practice. It is suggested that PSR can play an important role in assisting firms to develop sustainable and responsible business practices. However, both academia and practice still lack an answer to how organizations may implement PSR. Therefore, this study investigates the strategic implementation approach and provides a Strategic PSR Implementation Framework by combining academic knowledge on PSR with research on SSCM and CSR and with insights from practitioner interviews on PSR implementation using the Grounded Theory approach. In particular, this study aims to a) develop a more thorough understanding of PSR and its context, and b) analyze how multinational companies headquartered in Germany within the consumer goods industry that are recognized as leading in sustainability have strategically implemented PSR in their organizations.