Without any explicit demand from their organization or pressure from their managers, do employees still behave unethically for their organizations' benefit? If so, which reasons drive them to do this? What kind of intra-personal, inter-personal, organizational, and contextual factors lay the groundwork for this particular behavior? In order to investigate the possible answers to these questions, we explore a very recent topic of business ethics, unethical pro-organizational behavior, which has gained growing academic attention yet is still not well-known in Turkey. As a review article, this study examines published articles, dissertation studies, and papers from proceedings on this topic while providing some recommendations for future studies.