This study investigated the effect of work–family conflict on the emotions of guilt and hostility, and the implications of work–family conflict and these emotions for job satisfaction and marital satisfaction. Using experience-sampling methodology, data were collected from a sample of 75 individuals over a period of 2 weeks (producing 625 data points). Results revealed that within individuals, family-to-work conflict experienced at work, and work-to-family conflict experienced at home, were positively associated with guilt and hostility at work and at home, respectively. In addition, state hostility mediated the negative effect of work-to-family conflict at home on daily marital satisfaction. Finally, cross-level interaction effects were observed such that work–family conflict more strongly affected the emotions of those scoring high on trait guilt and trait hostility.