“…Based on the principles of social exchange theory (Cropanzano & Mitchell, 2005;Guest, 1998), psychological contract theory states that if employees perceive that their organization has not fulfilled its obligations, they will react with anger and frustration (Robinson & Morrison, 2000). More specifically, psychological contract breach is defined as the belief of an employee that the organization has failed to deliver its obligations (Lambert, Edwards, & Cable, 2003;Morrison & Robinson, 1997). Earlier research has revealed significant age differences in relations between psychological contract breach and work-related outcomes like job satisfaction, commitment and job turnover (Bal, De Lange, Jansen, & Van der Velde, 2008), and pointed to possible underlying age-related changes, such as a changing time perspective (perceptions of the individual's future), that may explain these effects (Bal, Jansen, Van der Velde, De Lange, & Rousseau, 2010).…”