Mohammed, Jemal (PhD)Worku, Dasalegn2018-10-292023-11-042018-10-292023-11-042016-05http://etd.aau.edu.et/handle/123456789/13336The increasingly competitive global economy has pushed companies to exploit their available resources as a means of achieving competitive advantage. In this regard leadership is critically important because it has a great impact on the condition of the organization. The purpose of this quantitative study is to investigate the relationship between Leadership behavior and employees’ Performance and employee commitment as mediating factor. The research is cross-sectional one. The research approach applied for this study was quantitative type of research where both descriptive and explanatory analyses have been deployed. The target population of this study was employees of commercial bank of Ethiopia working in Addis Ababa area at branch level, which includes 4 districts. From 5,500 total populations of CBE branches, which are found in Addis Ababa city, 420 employees were selected as the sample of the study. Sample random sampling technique was used to select the branches and individual respondents. The standardized questionnaires of leadership behavior organizational commitment and employees’ performance were adapted from previous standard questionnaire. ANOVA Analysis was used to compare the demographic characteristics of the respondents. Correlation and linear regression were used to analyze the relationship and its effect between leadership behavior and employees' performance through organization commitment as mediator. The regression results showed that the leadership behaviors have significant contribution for organizational commitment and employees’ performance. Moreover, all organizational commitment dimensions have significant effect with organizational performance. At last, the result conformed that organizational commitment has a mediating effect between leadership behavior and employees performance. Generally, managers need to improve their behavior to the highest level to improve the organizational commitment and employees’ performance. Key words: leadership behavior, employees’ performance and Organizational commitmentenleadership behavioremployeesperformance andOrganizational commitmentThesis