Employees are expected to perform specific roles in an organization as specified by their job descriptions and superior’s expectations. Bidarian and Jafari (2012) found that employees play an important role in activities in the organization, such as their social interaction with colleagues and leaders to conduct the activities. These extra-role behavior’ are behaviors termed as Organizational Citizenship Behavior (OCB). Although many OCB studies have been conducted in Vietnam, it is under adequate. Based on Organ (1988) and Podsakoff, MacKenzie, Paine, and Bachrach (2000), this research develops and confirms the OCB scale in the higher education context. The mixed-method (in-depth interview of one vice-rector, two HR managers, three deans, and collecting quantitative data from 317 academician and non-academic staff) was used to develop a new scale suitable to the Vietnamese context. The research results determine OCB factors include altruism, conscientiousness, sportsmanship, courtesy, and civic virtue.