Abstract

The purpose of this paper is formulating the comprehensive model for identify factors that have impact on development of organizational citizenship behaviour (OCB) in Iranian petrol national company. To achieve the purpose mentioned above, questionnaire survey method was used. In this research, impacts of five factors such as leadership, personality, structural, cultural and value factor on development of OCB were examined. Results indicate that OCB is high in units and their manager used transformational stale, their employee have personality trait such as emotional stability, extraversion, openness, agreeableness  and conscientiousness, also their organizational culture was process oriented, employee oriented, have an open system and loose control. Finally, findings in this research are shown that social capital and organizational justice enhance OCB in organizations.

Key words: Leadership factors, personality factors, structural factors, cultural factors, value factors.