The Impact of Population Ageing and Human Capital on the Economic Growth in Iran: An Analysis with an Overlapping Generations Model

Document Type : Research Paper

Authors

1 Ph.D. Candidate in Economics, Department of Economics, Arak Branch, Islamic Azad University, Arak, Iran

2 Professor,Department of Economics, Arak Branch, Islamic Azad University, Arak, Iran. / Professor of Economics, University of Alzahra

3 Assistant Professor,Department of Economics, Arak Branch, Islamic Azad University, Arak, Iran

4 Assistant Professor,Department of Economics, Tonekabon Branch,Islamic Azad University,Tonekabon, Iran

5 Assistant Professor, Department of Economics, Alzahra University, Tehran, Iran

Abstract

In this article, population aging in a closed economy whit a computable generalized Diamond overlapping generations (OLG) model has been investigated in which the element of human capital has been endogenously formed. In this study, the effect of population aging in a closed economy with 8 overlapping generations based on the Diamond model, capable of simulating the intergenerational differences has been designed for the Iranian economy across 50 years from 1400 to 1450. The research model includes 3 economic agents of household, firm, and government, whose behavior and decision-making are interdependent. First,the  impact of aging on the dynamics of the macroeconomic variables, specifically economic growth has been simulated and Then, the impact of implementing policies to increase human capital on the dynamics of the macroeconomic variables has been simulated. According to growth models, long-term growth depends on two factors namely: the growth of the labor force and productivity growth. Aging reduces long-term growth by reducing labor force growth. But human capital growth through increasing productivity promotes long-term growth. Therefore, the effect of aging on economic growth is the consequence of these two factors. In the simulated model, a minimum growth of human capital is necessary to overcome the negative impacts of labor force growth reduction due to aging on economic growth. In the basic scenario, the parameter of the share of skilled labor (δ) according to the estimation of this variable in the Iranian economy is equal to 0.038983. To the extent that the growth of human capital is higher than the reduction in labor force growth due to aging, long-term growth increases, otherwise long-term growth reduces. The results show that population aging if combined with policies to increase human capital, can compensate for the negative impact of aging on growth

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  1. Abdolah Milani, M., Mohammadi, T., & Tavassoli, S. (2017). The Determinants of Health Expenditures with an Emphasis on Population Ageing: A Country-Level Panel Data Analysis. Economics Research, 17(65), 25-50 (In Persian).
  2. Aghaei, M., Rezagholizadeh, M., & Bagheri, F.(2013), The effect of human capital on economic growth: The case of Iran’s provinces. IRPHE. 19(1), 21-44 (In Persian).
  3. Aghion, P., & Howitt, P. (1992). A Model of Growth through Creative Destruction. Econometrica, 60, 323–351.
  4. Alders, P., & Broer, D.P. (2004). Ageing, fertility, and growth. Journal of Public Economics, 89, 1075– 1095.
  5. Arabmazar, A., & Keshvarishad, A. (2005). The Impact of population age structure change on economic growth. Quarterly Journal of Economic Research, 15, 25-51 (In Persian).
  6. Auerbach, A. J., & Kotlikoff, L. J. (1987). Evaluating fiscal policy with a dynamic simulation model. The American Economic Review, 77(2), 49-55.
  7. Bahmani, M., Raghfar, H., & Mousavi, M. (2019). Parametric Reform of Iranian Pension System with Imperfect Labor Market: Utilizing Replacement Rate Reduction and OLG Model Approach. Economics Research, 19(72), 67-104 (In Persian).
  8. Basakhah, M., Yavari, K., Sadeghi, H., & Naseri, A. (2015). Population Aging And Iran's Non-Oil Economic Growth. Payavard, 9(2), 131-146 (In Persian).
  9. Dargahi, H., & Beiranvand, A. (2018). Examining the Relationship between Social Damages and Iran’s Economic Growth with an Emphasis on Human Capital in an Endogenous Growth Model: DSGE Approach. 23 (3), 59-100 (In Persian).
  10. Day, C., & Day, G. (2021). Aging, voters and lower-income tax: A role for pension design. Economic Modelling, 94, 560-569.
  11. De la Croix, D., Docquier, F., & Liégeois, P. (2007). Income growth in the 21st century: forecasts with an overlapping generations model. International journal of forecasting, 23(4), 621-635.
  12. Elgin, C., & Tumen, S. (2012). Can sustained economic growth and declining population coexist?. Economic Modelling, 29(5), 1899-1908.
  13. Elmeskov, J. (2004). Aging, public budgets, and the need for policy reform. Review of International Economics, 12(2), 233-242.
  14. Fougère, M., Harvey, S., Mercenier, J., & Mérette, M. (2009). Population aging, time allocation and human capital: A general equilibrium analysis for Canada. Economic Modelling, 26(1), 30-39.
  15. Ghiasi, M., Sarlak, A., & Ghafari, H. (2020). Investigating the relationship between social capital, health capital and economic growth in Provinces of Iran. Quarterly Journal of Applied Theories of Economics, 7(3), 131-156 (In Persian).
  16. Han, M. (2017). Aging, human capital and economic growth in China (Doctoral dissertation).
  17. Kashanian, Z., Raghfar, H., & Mousavi, M. (2018). Simulation of Macroeconomic Effects of Population Ageing (Application of General Equilibrium Overlapping Generations Model). Journal of Economic Research (Tahghighat- E- Eghtesadi), 53(1), 93-115 (In Persian).
  18. Lee, S. H., Mason, A. W., & Park, D. (2011). Why does population aging matter so much for Asia? Population aging, economic growth, and economic security in Asia. Population Aging, Economic Growth, and Economic Security in Asia (October 1, 2011). Asian Development Bank Economics Working Paper Series, (284).
  19. Lucas JR, R. E. (1988). On the mechanics of economic development. Journal of monetary economics, 22(1), 3-42.
  20. Nagarajan, N. R., Teixeira, A. A., & Silva, S. T. (2016). The impact of an aging population on economic growth: an exploratory review of the main mechanisms. Análise Social, 4-35.
  21. Narciso, A. (2010). The impact of population aging on international capital flows. Available at SSRN 1702995.
  22. Raghfar, H., & Akbarbeygi, S. (2016). The Effect of Replacement Rate Changes in Social Security Pension Fund on the Capital Stock. Labor Supply and Saving. 23 (75), 45-74 (In Persian).
  23. Raghfar, H., Mousavi, M., & Ardalan, Z.(2014). Aging Phenomenon Impacts and Efficiency Changes Effects on Pension and Macroeconomic Variables Using a Dynamic General Equilibrium Approach-Over Lapping Generation Model (OLG). Journal of Population Association of Iran,9(17), 7-35 (In Persian).
  24. Romer, P. M. (1990). Endogenous technological change. Journal of Political Economy, 98(5, Part 2), S71-S102.
  25. Sabzalizad, H, S., Raghfar, H., & Moosavi, M. (2019). Welfare and Macroeconomic Impact of Parametric Reforms in Pension Funds: with emphasis on Replacement and Contribution Rates. Ph.D. Thesis, Alzahra University, 6-20 (In Persian).
  26. Sala-i-Martin, X. X. (1996). A positive theory of social security. Journal of Economic Growth, 1(2), 277-304.
  27. Solow, R. M. (1956). A contribution to the theory of economic growth. The quarterly journal of economics, 70(1), 65-94.