In an experimental study (N = 60) we showed that gender differences play an important role in the extent to which people expect work goal differences between themselves and their collaborating partner. Participants who interact with a same-sex partner expect this person to pursue the same work goal as the self, whereas those who interact with an opposite-sex partner expect this person to have a different work goal to the self. When these expectancies were confirmed, participants felt relatively little disappointment, developed a clear image of their partner, and felt committed toward future collaboration. However, an expectancy violation caused participants to respond relatively negatively on these measures. These effects are discussed in relation to expectancy violation and congruence theory.