We investigated employee commitment to the supervisor and supervisor commitment to the employee within employee-supervisor dyads. We examined the relationships among four commitment mindsets (affective, normative, continuance-sacrifices, and continuance-al tematives) across members of the dyads and their relationships to employee job performance. Using a sample of 300 employee-supervisor dyads from health care organizations, HLM analyses revealed that supervisor positive commitments (i.e., affective, normative, continuance-sacrifices) generally related significantly to employee positive commitments. Moreover, supervisor commitment moderated the relationship of employee affective commitment to job performance, such that when supervisor affective, normative; and continuance-sacrifices commitments were high, the relationship between employee affective commitment and performance was weaker. We discuss the implications of these findings for the understanding of employee-supervisor relationships. (C) 2011 Elsevier Inc. All rights reserved.