The purpose of this study is to find out the job satisfaction of the korean medical clinic workers, and understand the factors that affect the satisfaction thereby increasing the efficiency of human resource management and providing the basic data to establish the management strategy. We visited 50 korean medical clinics which were chosen randomly from the korean medical clinics in the city of Changwon, Gyungnam. First, we explained the purpose of the study and survey contents to the surveyees, then distributed the Questionnaire and collected them. The data analysis was done statistically using the SPSS WIN IBM 20.0 program. The results were as follows: Professional career, interpersonal relationship, work autonomy, and overall job satisfaction showed significant differences depending on ages. While satisfaction of interpersonal relationship showed significant difference depending on final education. Depending on marriage status, while married persons showed significantly high satisfaction on professional career, interpersonal relationship, work autonomy, administration, and overall job satisfaction, there is no significant difference on income satisfaction. The number of years worked in the current clinic showed significant difference on administration satisfaction. Also, daytime working hours showed significant difference on administration and overall job satisfaction. The work area showed significant difference on overall job satisfaction. The income level showed significant differences on professional career, administration, and overall job satisfaction. From this study, it was confirmed that demographic characteristics and work environment factors showed significant differences on overall job satisfaction of workers in korean medical clinics. Therefore, in order to facilitate efficient manpower utilization and organization efficiency maximization, and motivation of human resources, a detailed plan should be developed to improve working environment and take demographic characteristics into consideration.