The purpose of this study is to investigate the casual relationship among perceived leisure constraints, leisure sports participation and life satisfaction of the workers, This research based on the viewpoint like this constructed a hypothetical model by a study on the casual relationship among perceived leisure constraints, leisure sports participation and participation in leisure sports of the workers, Subject for this study consisted of the workers over 40 - 50years of age which were a total of 450 using purpose sampling method, Of these 500 subject, 367 of these were used as data analysis, The Questionnaires about perceived leisure constraints, leisure sports participation and self-identity are based on the scale of domestic previous studies using, these are Witt and Ellis(1982), Hywang(2000), Csikszentmyhalyi(1990) and used them after examing validity and reliability through pilot test, The methods of statistics used to analyze the collected dates are Correlation Analysis, Multiple Regression Analysis, and Path Analysis, Results obtained from this research are as follows Hopothesis Ⅰ was supported to optimal casual model. Hopothesis Ⅱ was supported to optimal casual model. Hopothesis Ⅲ was supported to optimal casual model.