Abstract This paper explores marital adjustment among couples raising a temperamentally difficult infant. Employing a multiple case study methodology we conducted ten interviews with six couples. The parenting distress these couples experienced meant they were at higher risk of marital maladjustment. Four couples experienced marital crisis, resulting in the separation of one couple. Our analysis suggests that reference to “insufficient father involvement” during the interviews signaled problems with the mother’s satisfaction and marital adjustment. We found that mothers consider four specific aspects of paternal behavior as constituting involvement: 1. the father caring for the child in the mother’s presence, 2. the father caring for the child on his own, 3. the father sleeping in the same room as the mother and baby, and 4. the father being psychologically involved and supportive.