The present study aimed to identify the variables related to paternal participation in child-rearing. For this purpose, 543 fathers of young children living in the seven biggest cities in Korea were invited to participate in the internet survey and completed questionnaires assessing marital and job satisfaction. Their temperament was measured with the EAS Temperament Survey(Buss qqqamp; Plomin, 1984). The result of this research showed that both the marital and job satisfaction of the fathers affected their parenting participation. And also, marital satisfaction was more strongly associated with the fathers’ parenting participation than job satisfaction. All temperament types of the fathers had moderating effects and there were significant differences according to their temperament. This study provides the key factors which have an influence on paternal involvement in parenting and also suggests that the temperament of the father should be considered for participation in parenting.