Data obtained from subordinate-supervisor dyads (N = 314) of a large manufacturing company in South Korea were used to test a moderated mediation model of the processes linking person-organization (P-O) fit and employee work attitudes and behaviors. The results revealed that the influence of P-O fit on work attitudes and behaviors was indirect through perceived social exchange with organization. In addition, the relationship between P-O fit and perceived social exchange with organization was moderated by leader-member exchange (LMX) quality. Specifically, a high-quality LMX enhanced the positive effects of P-O fit on perceived social exchange with organization. © 2013 Taylor & Francis.