ABSTRACT: The quality of public services, among others, is determined by how optimal employee organizational citizenship behaviour   (OCB) is in the agency. There are several factors that can affect employee OCB, including transformational leadership, work motivation and organisational culture. The purpose of this study is: to examine the influence of transformational leadership, work motivation and organizational culture on OCB; examine the influence of transformational leadership on work motivation; examine the influence of transformational leadership on organisational culture; examine the influence of transformational leadership on OCB through work motivation; and examine the influence of transformational leadership on OCB through organisational culture. The study population was employees of the Mojokerto District Education Office, East Java, Indonesia, who have the status of state civil apparatus. Determination of the number of samples using the saturated sampling method, so that all members of the population totalling 104 ASNs were determined to be the sample. Data collection using a questionnaire distributed directly to respondents. The data analysis technique uses SEM PLS. The results concluded that as independent variables it was proven that transformational leadership, work motivation and organizational culture had a positive and significant effect on employee OCB. When transformational leadership is implemented optimally, work motivation strengthens and organisational culture is also strong, employee OCB also increases. Furthermore, work motivation and organizational culture as mediating variables of influence on employee OCB can play an optimal role. 

KEYWORDS – Transformational leadership, Work motivation, organizational culture; Organizational Citizenship Behaviour.