Objective: The study aims to examine fathers’ parental stress and the variables effecting parental stress of fathers with infants. Methods: One hundred seventeen fathers with 0 to 2 year-olds were recruited from daycare centers in Daejeon metropolitan city. The Korean version of the Parenting Stress Index Short Form (K-PSI-SF) by Lee, Jung, Park and Kim(2008), The Korean Occupational Stress Scale-Short Form (Koss-SF) by Jang and Ko(2005), and the Revised-Kansas Marital Satisfaction Scale(RKMSS) by Chung (2004) were used to measure fathers’parental stress, occupational stress, and marital satisfaction. Results: First, the most influential variable that affected father’s parental stress was their marital satisfaction. The fathers felt less parental stress when they felt higher marital satisfaction. Second, fathers felt less parental stress when their occupational environments were family friendly. Conclusion/Implications: Ways to improve mariatal satisfacation and a family friendly evironment at work should be sought out in order to lessen the parental stress of fathers raising infants.