The oil price in the global market hit new records in the recent years. Under the circumstance of opened market and fierce competition, the gas station industries toward lower profit due to high operation cost plus price war and intensive promotion. The station managers are responsible for operation management, market analysis, administrative, personnel as well as sale. Although the station scale is small, it is a business unit indeed. In the diversity of management and competition environment, the station managers shall possess not only the ability of certain expert or supervisory but also multiply requirement. Except personal technical skill, the station managers with the competency of human resource management are one of key successful factors. This research is trying to find out the human resource management is necessary for the station managers. Furthermore, this research would like to find out the interaction effects of management competency, human resource management and work motivation on operational performance.