The effects of employee's organizational support perceptions on their organizational citizenship behaviors: The role of psychological capital in this process and a study

Along with the globalization, the rapid change in the technology and communication leads the businesses to seek innovation continuously against their rivals. It cannot be ignored that the most important factor, which will accord competitive advantages to businesses under these competition conditions, is the human resources. Therefore, understanding the behaviors of employees and obtaining data for this purpose makes our study important. In this context, the purpose of this study is to determine the effects of the organizational support perceptions of employees to the organizational citizenship behaviors, and to determine what kind of role the psychological capital plays in this process. The sample of the study is consisted of 503 public and private sector employees, who work in Istanbul on the European side and are selected with the convenience sampling method. There are totally 32 hypotheses in the study, as four main hypotheses and 28 sub-hypotheses. According to the structural equation model (SEM); it has been determined that organizational support scale affect the altruism, conscientiousness, courtesy, civic virtue affect sportmanship that are sub-scales of organizational citizenship scale: (H1 has been supported, H1a has been supported, H1b has been supported, H1c has been supported, H1d has been supported, H1e has been supported); the organizational support scale affect the hope and hopefulness that are sub-scales of psychological capital scale (H2 has been partially supported, H2b has been supported, H2c has been supported); the self-efficacy and durableness sub-scales of the psychological capital scale affect the civic virtue, courtesy and conscientiousness that are sub-scales of the organizational citizenship scale; In addition, the optimism sub-scale of the psychological capital scale affect the courtesy sub-scale of the organizational citizenship scale (H3 has been partially supported, H3b has been supported, H3c has been supported, H3d has been supported, H3h has been supported). According to the SEM model, which is applied to determine whether the psychological capital has a mediating role; it was determined that there is a mediating variable between the psychological capital and the altruism, conscientiousness, courtesy, civic virtue and sportmanship sub-scales of organizational citizenship behaviors scale and the organizational support (H4 has been supported, H4a has been supported, H4b has been supported, H4c has been supported, H4d has been supported, H4e has been supported). SEM model has been tested with the Sobel-Aroian-Goodman tests after determining the mediating effect, and the psychological capital have shown mediating effect according to the results of each three tests. Key Words: Organizational Citizenship Behaviour, Organizational Support, Psychological Capital.