Perceived organizational support and affective commitment: the mediating role of organization-based self-esteem in the context of job insecurity

Research on the relationship between perceived organizational support (POS) and affective organizational commitment (AC) has primarily adopted a social exchange perspective. In this study we considered complementary socio-emotional explanations of the POS-AC relationship. We focused on the mediating role of organization-based self-esteem (OBSE) and tested competing models of the POS-OBSE-AC relationship separately on data from two Korean banks that experienced different levels of downsizing following the 1997 Korean financial crisis. We further extended the analysis by examining the extent to which the relationship between POS and OBSE and AC, respectively, was affected by employees' perceived sense of job insecurity in the two banks. The results showed that OBSE was a significant mediator of the POS-AC relationship in both organizations. POST however, also retained a strong independent direct effect on commitment. Moreover, as expected, perceived job insecurity tended to attenuate the POS-OBSE relationship, but augmented the direct relationship between perceived organizational support and affective commitment. Copyright (c) 2006 John Wiley & Sons, Ltd.