Organizational Citizenship Behavior as a Social Exchange: Perceived Organizational Support, Leadership-Member Exchange, and Role Definition

This research, not only includes social exchange theory but also integrates the concept of role theory, which defines role definition breadth as mediating effect of organizational citizenship behavior and perceived organizational support.

The main purpose of this research is to discuss if employee’s role definition breadth is mediating effect of perceived organizational support and organizational citizenship behavior. There are 305 questionnaires surveyed by employees and their supervisor. The result indicate that: First, employee with high perceived supervisor support or perceived organizational support, have more organizational citizenship behavior ;second, when employees enlarge their role definition breadth, they will show more organizational citizenship behavior; third, role definition breadth have significant mediating effect between organizational citizenship behavior and perceived organizational support.