The purpose of this study is to examine the relationship between job satisfaction and organizational citizenship behaviour (OCB) among the employees in Sibu Divisional Administration Office. The sample data are derived from a questionnaire survey of 102 employees in Sibu Divisional administration Office. The survey was conducted to investigate the job satisfaction and their OCB using a 5-point Likert-scale research instrument that was developed based on the work of Smith, Kendall and Hulin (1996) and that of Podsakoff and MacKenzie (1994). Based on the analysis, it is found that overall; job satisfaction has significant relationship to OCB.