近年來，許多企業開始重視員工幸福感對提昇組織績效的重要性，並思索如何透過提昇員工幸福感，來留住績優的員工。故本研究欲檢驗工作家庭衝突對員工幸福感與情感性承諾的影響，同時檢驗員工幸福感在工作家庭衝突與員工幸福感兩者關係間的中介角色。本研究利用網路問卷，蒐集328份有效問卷後，進行後續分析。層級迴歸分析結果發現， 工作家庭衝突分別對幸福感、情感性承諾間具有顯著負向影響， 幸福感對情感性承諾則有顯著正向影響。此外，幸福感在工作家庭衝突與與情感性承諾間，則有顯著的中介效果。最後，本研究根據上述結果，提出相關理論與實務意涵建議。 In recent years, organizations have emphasized the importance of employees’ happiness to the improvement of organizational performance, and have been engaged in increasing employees’ happiness so as to retain the talented employees. The purposes of the study are to examine the influence of work-family conflicts on emmployess’ happiness and affective commitment as well as the mediating role of happiness between work-family conflicts and affective commitment. We collected 328 copies of effective questionnaires via online survey, and then conducted subsequent analyses. The results of hierarchical regrennsion analysis showed that work-family conflicts had negative effects on happiness and affective commitment. Employees’ happiness was also found positvelyed associated with affective commiement. In addition, the relationship between work-family conflicts and affective commitment was mediated by employees’ happliness. Both theoretical and practical implications are discussed.