국민건강보험 빅데이터를 이용한 한국의 세대 간 소득이동성 연구

Abstract

Problems of intergenerational conflict and inequality are emerging not only in Korea but also around the world, and in particular, pessimism is spreading not only about inequality in results, but also inequality in the process and opportunities leading to results. This study investigates opportunity inequality in Korean society by analyzing the relationship between the income of the parents' generation and the children's generation, called as intergenerational income mobility, using the income quintile of parents and children of NHIS data. In addition to the parental effect, income mobility can also be influenced by children's characteristics and the regional characteristics of their living environment, so we aim to examine the extent to which these factors affect income mobility. The analysis shows that there is a significant relationship between parents' income levels and children's income levels, and that there are differences in mobility across regions. The analysis also shows that the effect of factors influencing children's income varies across regions. Finally, we found that when discussing inequality of opportunity and intergenerational income mobility in Korea, it is important to properly consider the characteristics of the data and the impact of relevant factors, such as the proposed measure of income mobility.