Raising the statutory retirement age is above all needed to stabilize contribution rates; in addition the importance of growth potential has been highlighted of late, as delayed retirement boosts the labor force potential. Moreover, the current debate is increasingly focusing on aspects of intergenerational fairness or equal treatment. The expected average pension duration and the cohort-specific implied return on statutory pension insurance are used as criteria for equal treatment. For example, those born in the sixties and seventies show the lowest implied return, whereas younger generations (1980 and younger) enjoy a higher return – a clear case of unequal treatment. / Only available in German.