In recent years, The Taiwan government strongly guided the activities of mergers and acquisitions in banking industry. What interested me is not only the synergy of those activities, but also how the employees of those acquired banks dealt with different management challenges. In my research, I adopted grounded theory to analyze the case of Cathay United Bank merged Lucky Bank. I interviewed 3 acquiring firm managers who have implemented of mergers and acquisitions projects. Besides, I interviewed 7 acquired firm staff who experienced organization change. According to interviewing transcriptions, I built up 6 major aspects that are External Environment, Operating System, Human Resources,Organizational Structure, Style of Leadership and Business Culture for final analysis. After qualitatively analysis, the research findings and results are as follow: Firstly, the longer arrangement it took before the mergers and acquisitions project, the more satisfied results acquired firm employees have. Secondly, the amicable management for integration project between acquired firm directors and acquiring firm directors can easily build up a cooperative style organizational culture for a new organization.
