This book provides a comprehensive, theory-based analysis of current issues in population economics. It addresses the most important problems caused by demographic changes using the popular overlapping generations growth model by Samuelson and Diamond. Taking into account families’ fertility decisions, it examines not only the demographic changes due to longer life expectancy but also the effects of social security policy on demography and labor supply/individual retirement behaviors. Conducting all analyses in a dynamic general equilibrium setting, the book offers a valuable theoretical reference guide in the field of population economics. 

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This book provides a comprehensive, theory-based analysis of current issues in population economics. It addresses the most important problems caused by demographic changes using the popular overlapping generations growth model by Samuelson and Diamond. Taking into account families’ fertility decisions, it examines not only the demographic changes due to longer life expectancy but also the effects of social security policy on demography and labor supply/individual retirement behaviors. Conducting all analyses in a dynamic general equilibrium setting, the book offers a valuable theoretical reference guide in the field of population economics. 

Introduction and Overview.- Part I. Life Expectancy.- Longevity and Fertility.- Life Expectancy, Money and Growth.- Life Expectancy, the Labor Supply of the Elderly and Fertility.- Part II. Issues in Social Security.- Fertility, Child Care outside the Home and Pay-As-You-Go Social Security.- Macroeconomic Effects of Changes in the Eligibility Age for Payments of Social Security Benefits under Cash-in-Advance Constraints.-Preference for Having Children, Fertility and Social Security.- Social Security Reform and the Labor Supply of the Elderly.- Political Choice of Government Budget Finance in Population Aging Economy.- Part III. Capital Accumulation in Population Aging Economy.- Longevity, Education and Economic Growth.- Parental Education, Fertility and Economic Development.- Youth Dependency, Technological Progress, and Economic Development.- Aging and Public Capital Formation.- Short- and Long-term Effects of Capital Taxation on Economies with Different Demographic Changes.- Does Aging Reduce Sustained Stock of Renewable Resources?- Conclusion.