Workplace spirituality has been emphasized as one of the alternatives to solve several problems caused by rapid changes surrounding individuals and organizations in modern society. There are many assertions and study results that fulfilling employees’ spiritual needs apart from power, profitability, productivity which are traditional way of company’s pursuits, will make them fulfill their wholeselves and feel the fundamental meaning and purpose of their lives followed by positive outcomes in both individual and organizational sides. The main objective of this study is to examine the impact of servant leadership on workplace spirituality(WS), the impact of WS on organizational citizenship behavior, and the mediating effect of WS between servant leadership and organizational citizenship behavior in domestic business circumstances. Survey method was used to prove the study hypothesis using data collected from employees(n=418) working for companies in Seoul and some other capital area, and SPSS Statistics 23.0 program is used in analysis. The results are as follows; firstly, servant leadership has positive effects on all the lower dimensions of WS- inner life, meaningful work, sense of community. Secondly, inner life, meaningful work, sense of community have positive effectson organizational citizenship behavior respectively. Thirdly, servant leadership has positive effects on employees`` organization citizenship behavior. Lastly, inner life, meaningful work, sense of community have mediating effects between servant leadership and organizational citizenship behavior respectively. The implications of this study are as follows; firstly, it proved the effect of servant leadership on employees`` workplace spirituality in domestic business circumstances for the first time, which implies the level of inner life, meaningful work, and sense of community are affected by leadership style. Therefore, the companies will need to train leaders and HR managers to develop servant leadership skills, and it will lead to increase organizational performance as a result. Secondly, this study diversified workplace spirituality related studies which is at the beginning stage. By putting workplace spirituality as a mediating variable, it tried to find out the leading variable as well as the result variable. Thirdly, this study showed the organizations should have attention on the effect of workplace spirituality to achieve the organizational goal and to increase organizational productivity.