IOSR Journal of Business and Management (IOSR-JBM) e-ISSN: 2278-487X, p-ISSN: 2319-7668. Volume 20, Issue 4. Ver. V (April. 2018), PP 21-30 www.iosrjournals.org DOI: 10.9790/487X-2004052130 www.iosrjournals.org 21 | Page Effect of Servant Leadership, Trust in Leadership on Organizational Citizenship Behavior with Interpersonal Communications as Mediation Variables Maria Marina Ezerman 1 , Desak Ketut Sintaasih 2 1 (Student of Master of Management Faculty of Economics and Business, Universitas Udayana-Bali-Indonesia) 2 (Lecture Faculty of Economics and Business, Udayana University-Bali-Indonesia) Corresponding Author: Maria Marina Ezerman 1 Abstract: The purpose of this study is to analyze the effect of servant leadership and trust in leadership on organizational citizenship behavior with interpersonal communication as a mediation variable to employees at Siki Bali Denpasar Foundation. The number of research samples were 49 respondents by using path analysis method. The results showed that servant leadership had positive and significant effect on interpersonal communication. Implementation of servant leadership will be able to encourage the creation of more effective interpersonal communication. Trust in leadership is also proven to have a positive and significant influence on interpersonal communication, so it can be interpreted that the increased trust in leadership will encourage the creation of better interpersonal communication. Interpersonal communication has been shown to have a positive and significant influence on organizational citizenship behavior. Servant leadership has also been shown to have a positive and significant impact on organizational citizenship behavior of employees. Trust in leadership has also been shown to have a positive and significant impact on organizational citizenship behavior. From the research results can be concluded the role of interpersonal communication proved able to mediate the positive relationship servant leadership and trust in leadership toward organizational citizenship behavior applied in Siki Bali Denpasar Foundation Keywords - Servant Leadership, Trust in Leadership, Interpersonal Communication, Organizational Citizenship Behavior --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 09-04-2018 Date of acceptance: 23-04-2018 --------------------------------------------------------------------------------------------------------------------------------------- I. Introduction The existence of human resources within a company plays a very important role. Therefore the potential of every human resources in the company should be utilized as well as possible for the success of the company. Recognizing this, it is necessary to increase awareness of the importance of organizational citizenship behavior (Abdu, 2014) [1]. According to Michelle (2010) [2] the extra behavior or organizational citizenship behavior of the members of the organization is well demonstrated, if the leader is trusted by the employee. The quality of leaders is often regarded as the most important factor that determines subordinate trust towards the leader, and becomes a benchmark of organizational success or failure. According to Greenleaf (1998: 75) [3] trust in leadership can increase the values of harmony within the company and make it easier to achieve company goals. Therefore, trust in leadership is based on effective communication skills between leaders and subordinates to be achieved in theory and practice. One of the factors that play an important role in implementing organizational citizenship behavior in employees is interpersonal communication (Abdu, 2014) [1]. Interpersonal communication plays an important role for leaders and employees in performing key functions within the organization, namely control functions (control, supervision), motivation, emotional disclosure, and information. Interpersonal communication is communication done within the organization between individuals, both in face-to-face and face-to-face dialogue or through the media. Haider et al. (2015) [4] in his research proves that trust and servant leadership have a positive effect on the organizational citizenship behavior mediated by interpersonal communication. The same is stated by Hassan et al. (2010) [5] that interpersonal communication has a mediating role with a positive influence on servant leadership and trust in leadership on organizational citizenship behavior.