The main purpose of this study is to examine the relation between different patterns of commitment to work role and fathering and the level of life satisfaction. 272 fathers, whose oldest child is under 12 years old with professional, managerial and clerical jobs, were selected. The major findings of this study were as follow: 1) Married men with the oldest child under 12 years old were more likely to be committed to fathering than to work role. 2) The significant variables that affected the level of commitment to fathering were the age of the oldest child, the frequency of participation in the meeting after work, parental satisfaction, and how they perceive the spousal support. And the significant variables that affected the level of commitment to work role were type of job, parental distress, work satisfaction, work distress. 3) Patterns of commitment to fathering and work role were categorized into four groups. The names were given as positively balanced commitment pattern, positive fathering commitment pattern, negative fathering commitment pattern, and totally negative commitment pattern. 4) The significant variables important in classifying the patterns of commitment to work role and fathering appeared to be the age of the oldest child, work distress, the frequency of participation in the meeting after work, parental satisfaction, how they perceive the spousal support, work satisfaction and weekend total working hour. 5) The balanced positive commitment to work and fathering was associated with the highest level of life satisfaction.