This research was aimed at analyzing the direct influence of person-job fit and person-organizational fit in job satisfaction. It was also analyzing the indirect influence of person-job fit and person-organizational fit in organization citizenship behaviour (OCB) through job satisfaction as mediator. The sample of the research was 75 respondents. The sample collection technique used saturated sample technique. The analysis used was instrument tests (validity and reliability tests), classic assumption test, and path analysis test using SPSS ver. 25. The research result showed that person-job fit did not influence job satisfaction and job satisfaction did not mediated the relationship between person-job fit and organization citizenship behaviour (OCB). However, job satisfaction had positive and significant influence towards organization citizenship behaviour (OCB). Meanwhile, person-organizational fit had positive and significant influence towards job satisfaction and job satisfaction fully mediated the relationship between person-organizational fit towards organization citizenship behaviour (OCB).