Abstract: Analyze the role of servant leadership in job engagement, affective commitment, and organizational citizenship behavior. Then job engagement influences affective commitment and organizational citizenship behavior respectively. Lastly is the mediating role of job engagement on the influence of servant leadership on affective commitment and organizational citizenship behavior. It is suspected that servant leadership has a significant impact on job engagement, affective commitment, and organizational citizenship behavior. The next assumption is that job engagement plays a significant role in affective commitment and organizational citizenship behavior. The final model is to test the mediating role of job engagement on the influence of servant leadership on affective commitment and organizational citizenship behavior. Causal design with a positivism (quantitative) paradigm to test the proposed hypothesis. Involving regional apparatus organizations in South Konawe Regency, around 318 people were randomly determined proportionally. Data was obtained by distributing questionnaires, using a Likert scale. Data were analyzed with the help of SEM using AMOS 7 software. Servant leadership is proven to play a significant role in job engagement, affective commitment, and organizational citizenship behavior. Then job engagement has a negative effect on affective commitment and organizational citizenship behavior. Job engagement acts as a mediator between servant leadership and organizational citizenship behavior. Government organizations in carrying out work assignments are still very weak so they are unable to create commitment and effective organizational citizenship behavior. Based on these findings, it is necessary to strengthen the application of job engagement and to prove this model it is necessary to carry out further analysis on a wider scale and with diverse sample characteristics. Originality/value, the mediating role of job engagement on the influence of servant leadership on affective commitment and organizational citizenship behavior

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