Psychological contract breach, affective commitment to organization and supervisor, and newcomer adjustment: A three-wave moderated mediation model

• Organizational commitment (OC) mediates the breach-outcome relationships.
• Supervisory commitment negatively moderates the OC-outcome relationships.
• The moderating effect extends to the indirect relationships of breach to outcomes.

This study examines the relationship of psychological contract breach to newcomer adjustment outcomes using affective commitments to organizations and supervisors as mediators and also looks at the moderating role of affective commitment to supervisors. Drawing from data collected at three points in time among a sample of newcomers (N = 224), we found that Time 2 affective organizational commitment mediated a positive relationship between Time 1 psychological contract breach and Time 3 turnover intention and emotional exhaustion. Moreover, affective commitment to supervisors interacted with organizational commitment such that the latter was more negatively related to Time 3 outcomes at low levels of commitment to supervisors. Similarly, the indirect relationships of psychological contract breach to Time 3 outcomes were stronger and negative at low levels of commitment to supervisors. Affective commitment's role in the psychological contract breach-outcome relationships during the entry period is discussed.