This study examines how the adoption of proactive socialization behaviors by temporary agency workers is related to contract renewal intention of the supervisor in the client organization in which they are assigned. We propose that the adoption of such behaviors will be associated with a favorable performance evaluation from the supervisor in the client organization, and in turn, to his or her contract renewal intention through two mechanisms, namely, role clarity and leader–member exchange (LMX), which refers to the quality of the relationship between the temporary worker and his or her supervisor. Data were collected from 217 worker–supervisor dyads. Results indicate that information-seeking behavior is related to performance evaluation through role clarity. This indirect relationship is however negative, as greater role clarity relates negatively to performance evaluation. Our results also show that LMX acts as a mediator between feedback seeking, boss-relationship building, and performance. Finally, favorable performance evaluation is positively associated with contract renewal intention.