International Journal of Academic Multidisciplinary Research (IJAMR)   Year: 2021 | Volume: 5 | Issue: 8 | Page No.: 82-91 The Impact Of Employee Motivation On Organizational Effectiveness: The Mediation Effect Of Individual And Group Effectiveness (B) Girma Asmamaw Tegegne, Xu XIAOLIN, YANG LANRONG Abstract: To evaluate the impact of employee motivation on organizational effectiveness, this study explores the role of individual and group effectiveness as a mediating factor. As a result of a survey conducted with 402 employees from the Ethiopian Ministry of Transportation and its four corporate entities, the impact of employee motivation on organizational effectiveness was assessed. The research hypotheses were evaluated using SPSS 26's correlation and regression analysis. A significant positive correlation exists between employee motivation and organizational effectiveness, according to the results. Employee motivation and organizational effectiveness are positively correlated, according to the findings. According to the results of regression analysis, individual and group effectiveness as mediators impact the relationship between employee motivation and group effectiveness.