本研究提出一個多層次的理論模型，以驗證倫理領導對於工作績效（服務績效與服務導向組織公民行為）的影響，本研究的樣本來自於台灣台中一大型商業銀行所屬22間分行，共計214份成對問卷，本研究指出倫理領導會透過關係為中介而影響到員工的績效，另外關係差異性會影響關係與員工績效間的重要干擾因素，最後本研究還對相關理論與實務上的貢獻加以討論。

In this study, we propose a multi-level theoretical model to examine the influence of ethical leadership on employee job performance (both service performance and service-oriented organizational citizen behavior). We test our model based upon 214 pairs of questionnaires obtained from 22 branches of a large commercial bank in Taichung. We identify ethical leadership as the primary source to influence employee job performance through the underlying mediating mechanism of supervisor-subordinate guanxi (i.e., long-term interpersonal relationship). We further identify supervisor-subordinate guanxi differentiation as a group contextual factor with a negative moderating effect on the relationship between supervisorsubordinate guanxi and employee job performance. We discuss the theoretical and practical implications of our findings in the context of service-oriented organizations.