In recent years, intergenerational relationships, especially, intergenerational equity has grown in importance in Japan. Intergenerational equity is defined as an intergenerational conflict for resource allocation. Accelerated demographic aging, slow economic growth, changes in family relationships, and increasing employment mobility are all important factors influencing intergenerational equity. In this study, intergenerational relationships were analyzed in birth cohorts. Firstly, feelings with regard to the public pension system were explored. The results indicated that since the late 1990s, most cohorts have an increasing sense of unfairness with regard to the public pension system, with younger cohorts in general feeling a more intense sense of unfairness, implying weakened social cohesion. Knowledge regarding the public pension system has not necessarily reduced this sense of unfairness. It is recommended that media coverage of public pension system should be redesigned to relieve the sense of unfairness. In this regard, researchers have suggested the possibility of substitution between the state and the family. Secondly, the support given to children was investigated. The results showed that the younger the cohort, the less they were likely to receive funds from their parents to acquire housing. Moreover, in the case of housing, there was no possibility of substitution between the state and the family. Therefore, it was concluded that the sense of unfairness among the younger cohort would remain high. At the same time, being in the life stage in which educational costs of children would progressively increase may also result in a feeling of unfairness. If these inferences were correct, effective housing and educational policy would reduce the sense of unfairness by reducing the household burden. Intergenerational relationships are politically important matters in an aging society. It is suggested that future studies should investigating the intergenerational allocation of resources from a life course perspective, as well as investigations the interaction between macro and micro levels of intergenerational relationships.
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