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Macroeconomic Impact of Population Aging in Japan: A Perspective from an Overlapping Generations Model

Ichiro Muto, Takemasa Oda and Nao Sudo
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Takemasa Oda: Department of the Bank of Japan (BOJ)

IMF Economic Review, 2016, vol. 64, issue 3, No 2, 408-442

Abstract: Abstract Owing to a sharp decline in the fertility rate and a rapid increase in longevity, Japan’s population aging is the furthest advanced in the world. This study explores the macroeconomic impact of Japan’s population aging from the 1980s to the 2000s using a full-fledged overlapping generations model. It finds that Japan’s population aging as a whole adversely affects GNP growth by dampening factor inputs. It also negatively impacts on GNP per capita and fiscal variables, especially in the future, mainly due to the decline in the fraction of the population of working-age. For these findings, fertility rate decline plays a dominant role as it reduces both labor force and saver populations. The effects of increased longevity on economic growth are expansionary, but relatively small. The simulations predict that the adverse effects will expand during the next few decades. In addition to closed economy simulations, the paper examines the consequences of population aging in a small open economy setting. In this case a decline in the domestic capital return encourages investment in foreign capital, mitigating the adverse effects of population aging on GNP.

Keywords: E20; J11 (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (14)

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Working Paper: Macroeconomic Impact of Population Aging in Japan: A Perspective from an Overlapping Generations Model (2012) Downloads
Working Paper: Macroeconomic Impact of Population Aging in Japan: A Perspective from an Overlapping Generations Model (2012) Downloads
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DOI: 10.1057/imfer.2016.6

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