We conducted a laboratory study examining the effect of a family conflict with work on performance appraisal ratings given to men and women. Overall, the experience of a family conflict was associated with lower performance ratings, and ratee sex moderated this relationship. Men who experienced a family conflict received lower overall performance ratings and lower reward recommendations than men who did not, whereas ratings of women were unaffected by the experience of a family conflict. The sex bias was not evident when performance was evaluated on the more specific dimension of planning. Neither rater gender nor work-family role attitudes moderated the sex bias. Implications for future research and practice are discussed.