The purpose of this study is to examine if the characteristics of Korean hotel managers who have entered Vietnam influence local employees’ service-providing behavior significantly and also if knowledge sharing types have regulating effects in correlation between managers’ characteristics and service-providing behavior. To address the goal, this author conducted a survey to local employees working in five hotels that have entered Vietnam, and total 214 questionnaire sheets were used for positive analysis. According to the analysis results, managers’ characteristics, competence characteristics and psychological characteristics, are found to influence service-providing behavior, and in correlation between them, two factors of knowledge sharing types, colleagues and educational training, are found to exert regulating effects. Based on the results, this researcher suggests that managers should share their attitudes about management with local employees through educational training and deliver messages to entire employees clearly. Based on that, it is important to have proper communication among colleagues.