The purpose of this study was to examine the predictor of youth workers’ job satisfaction via systematic linkage structure of their personal/job/organizational factors. For this, data on 564 youth workers who were active in actual scenes of service were examined. Study findings are as follows: First, the level of youth workers’ job satisfaction was ordinary and the most effective predictor of it was supervisor’s social support. Second, youth workers, who received a higher social support from supervisors, whose depersonalization score of burnout was very low, and whose contact time with clients for a week was less than 11 hours, presented highest job satisfaction. On the other hand, such conditions as receiving supervisor’s social support less, perceiving communication within an organization to be closed, and having lower hardy personality were the determinants of lowering youth workers’ job satisfaction. Third, although youth workers regarded supervisor’s social support as less than ordinary level, their individual personality of strong internal control could become a protective factor for job satisfaction. Fourth, situations in which medium level of social support was perceived, but the role of job was ambiguous or hardy personality was lower, were expected to be risk factors for job satisfaction, whereas such a personality as presenting nearly no burnout in the area of depersonalization was expected to be a protective factor. Based on the above study findings, this study presented strategies to improve youth workers’ job satisfaction.