Employee performance attainment is a pervasive issue in the workplace and is increasingly becoming an important problem for effective human resource management. A review of the extant literature on perceived organizational support (POS) and performance suggests that there is a dearth of research aimed at examining the underlying mechanisms and the boundary conditions of the relationship between POS and performance. One of the objectives of this study is to examine the mediating role of psychological capital on the relationship between POS and performance. Furthermore, this study investigates the moderating role of organizational justice perception in said indirect relationship. Study 1 included a sample of 465 employees from both large private life insurance and telecom organizations. Study 2 was conducted on a sample of 216 employees from a large steel manufacturing firm. Findings suggest that psychological capital mediated the relationship between POS and performance. The indirect relationship of POS and performance via psychological capital was moderated by organizational justice. However, there is a counter-intuitive finding in this research. It was observed that at a high level of organizational justice, it had a smaller effect on performance in contrast to low level of organizational justice. Finally, theoretical contributions and managerial implications are discussed.

In two studies conducted in the United States and the People's Republic of China, we examined how the effects of organizational justice perceptions on employees' organizational citizenship behaviours (OCB) are influenced by individually held cultural value orientations. In Study 1, we did not find evidence of moderation by cultural value orientation. In Study 2, we re-examined the moderated relationships and found that the relationship between procedural justice and OCB was significantly influenced by masculinity-femininity orientation and that the relationship between distributive justice and OCB was significantly moderated by power distance such that the relationships were more strongly positive when followers were more masculine and higher in power distance. Also, we extended our model to include perceived supervisor support as a mediator of the direct and moderated effects of justice perceptions on OCB. We found support for the mediation model, but did not find the moderated mediation effects we predicted. Due to the large number of non-significant findings and inconsistencies across our two studies, we conclude with recommendations for scholars who face similar challenges in their research.