管理者的領導方式會影響員工的工作態度與行為,成員間的互助與合作已成為組織運作的常態,增進員工的互信,使之勇於任事、誠實負責,是當今組織和管理者的重大任務與挑戰。因此,本研究探討轉換型領導對於員工信任的影響、信任對於員工當責與道德行為之影響,以及信任的中介影響效果。本研究證實轉換型領導和信任有正相關,信任與當責及道德行為兩者有正相關。此外,信任會中介轉換型領導對員工道德行為的影響。依據研究發現,本研究提出管理意涵與未來研究的建議。Leadership affects employees’ attitudes and behaviors at work. Interdependence and collaboration among employees has been the norm for contemporary organizations. The promotion of mutual trust and accountability thus becomes a pressing issue for managers. This study aims to investigate the effect of transformational leadership on organizational trust and the subsequent effect on employees’ perceived accountability and ethical behavior. This study also explores the mediation of trust on the relationships between transformational leadership and perceived accountability as well as ethical behavior. It is found that transformational leadership is positively related to organizational trust. Organizational trust is positively related to employees’ perceived accountability and ethical behavior. In addition, it is also confirmed that trust mediates the relationship between transformational leadership and employees’ ethical behavior. Managerial implications and suggestions for future research are thus discussed.