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  • H55  (2)
  • J24
  • Munich: Center for Economic Studies and Ifo Institute (CESifo)  (3)
  • 1
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    Munich: Center for Economic Studies and Ifo Institute (CESifo)
    Publication Date: 2018-11-19
    Description: Recent reforms that aim at reducing the upcoming burdens of population ageing might seriously harm low income individuals. An increase in old-age poverty and disability will be the result. Under this prospect, the present paper quantitatively characterizes the optimal progressivity of unfunded pension systems in an overlapping generations model with idiosyncratic income, disability and longevity risk as well as endogenous labor supply at the intensive and extensive margin. Focusing on the German pension system, our model features the most recent demographic projections and distinguishes three skill classes with skill-dependent risk profiles. Starting from a baseline path that reflects a purely earnings related pension system, we increase the degree of progressivity and compute the resulting macroeconomic, welfare and efficiency effects. For our most preferred parametrization we find an optimal flat-rate pension share of 40 percent. This indicates that in Germany recent reforms that aim at raising retirement age and cutting benefit levels should be complemented by increases in pension progressivity, since improved insurance provision dominates higher labor supply distortions. In addition, we also find that reductions in the benefit level (i.e. privatization) will only reduce economic efficiency.
    Keywords: C68 ; H55 ; J11 ; J26 ; ddc:330 ; stochastic OLG model ; tax-benefit linkage ; endogenous retirement ; population ageing
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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  • 2
    Publication Date: 2016-05-23
    Description: In this paper we conduct a quantitative analysis of a number of stylized educational loan systems. We develop a stochastic general equilibrium model of a closed economy with a competitive firm sector and a government that levies taxes and administers educational loans. Individuals are heterogeneous in their talent for education and ability to learn on the job and face uninsurable idiosyncratic labour productivity risk during their working career. We calibrate the model to the US mortgage loan system and subsequently consider two possible reforms. The first is a Graduate Labour Tax (GLT) system whereby grants to students are financed by means of a tax on the labour income of educated individuals. We find that in the long run the proportion of uneducated workers stays roughly constant but the average educational attainment of students increases. As there exists a considerable amount of transitional dynamics in the model the welfare effects of the reform differ by generation. Cohorts alive at the time of the shock are worse off while ex-ante welfare of future cohorts increases. The gains to the latter are large enough to - at least in principle - compensate the losers from the policy reform and generate an overall welfare gain. The second possible reform we study is a Comprehensive Labour Tax (CLT). It is very similar to the GLT except for the fact that the educational tax is levied on all workers, including those who are uneducated. In contrast to the GLT reform the proportion of uneducated workers drops substantially. Generations that become economically active soon after the policy reform are worse off and the aggregate ex-ante welfare effect is negative.
    Keywords: E10 ; E24 ; D91 ; I22 ; J24 ; ddc:330 ; human capital ; experience effects ; educational loans ; uninsured labour market risk ; incomplete markets ; overlapping generations
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 3
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    Munich: Center for Economic Studies and Ifo Institute (CESifo)
    Publication Date: 2016-05-23
    Description: The present paper studies the growth and efficiency consequences of pension funding with individual retirement accounts in a general equilibrium overlapping generations model with idiosyncratic lifespan and labor income uncertainty. We distinguish between economies with rational and hyperbolic consumers and compare the consequences of voluntary and mandatory retirement plans. Three major findings are derived in our study: First, we quantify the commitment effect of social security for myopic individuals by roughly 1 percent of aggregate resources. It is possible to recapture this commitment technology in IRAs, if those are annuitized. Second, despite the fact that our consumers have an operative bequest motive, the welfare gain from the (implicit) longevity insurance of the pension system is significant and amounts to roughly 0.5 percent of aggregate resources. However, mandatory annuitization reduces unintended bequests so that future generations are significantly hurt. Finally, our results highlight the importance of liquidity effects for social security analysis. These efficiency gains are only attainable if accounts are voluntary and not mandatory.
    Keywords: H55 ; J26 ; ddc:330 ; individual retirement accounts ; annuities ; stochastic general equilibrium ; hyperbolic consumers ; Alterssicherung ; Rentenfinanzierung ; Private Rentenversicherung ; Konsumentenverhalten ; Zeitpräferenz ; Versicherungspflicht ; Wohlfahrtseffekt ; Allgemeines Gleichgewicht ; Overlapping Generations ; Theorie
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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