Every company organization expects its employees to have a high morale that is able to work beyond what they are responsible for. Employees are expected to contribute their full potential to the progress of the organization with full willingness. Every organization has different characteristics, so efforts to foster organizational citizenship behavior of employees need to be known by every organization. This study aims to determine the predictors of transformational leadership and job satisfaction on organizational citizenship behavior. Respondents in this study were 206 employees selected randomly. The results of this study found that transformational leadership and job satisfaction functioned as positive and significant predictors of organizational citizenship behavior.