Educational attainment and timing of fertility decisions

This paper focuses on timing of fertility decisions, conditional on the level of educational attainment of parents. Timing of fertility and educational attainment of parents rationalize the negative relationship observed in the data between hourly wages and childbearing. It is shown how the recent evolution in total fertility rates observed in developed countries could be in part the result of a transition from an early childbearing regime to a late childbearing regime. I develop a general equilibrium overlapping generations model in order to understand the joint determination of timing of childbearing decisions together with other household economic decisions in a life cycle framework. I show how idiosyncratic uncertainty might have asymmetric eects on completed fertility depending on timing of childbearing, generating the dierences in completed fertility observed between households that dier in their level of educational attainment.childbearing, overlapping generations, idiosyncratic uncertainty

Vintage specific learning-by-doing

This paper focuses on timing of fertility decisions, conditional on the level of educational attainment of parents. Timing of fertility and educational attainment of parents rationalize the negative relationship observed in the data between hourly wages and childbearing. It is shown how the recent evolution in total fertility rates observed in developed countries could be in part the result of a transition from an early childbearing regime to a late childbearing regime. I develop a general equilibrium overlapping generations model in order to understand the joint determination of timing of childbearing decisions together with other household economic decisions in a life cycle framework. I show how idiosyncratic uncertainty might have asymmetric eects on completed fertility depending on timing of childbearing, generating the dierences in completed fertility observed between households that dier in their level of educational attainment.childbearing, idiosyncratic, overlaping generations models, uncertainty

La financiacion del Sistema de Seguridad Social en Espana: Efectos dinamicos de una posible reforma

Este articulo analiza los efectos de dos posibles reformas en la financiacion del actual sistema de Seguridad Social en Espana, y cuantifica los efectos de dichas reformas sobre los principales agregados macroeconomicos. El tipo de reformas que se analizan son la sustitucion del actual regimen de financiacion de cotizaciones, por imposicion directa e indirecta, y los efectos de variaciones en plazo de calculo de las pensiones de jubilacion. Para este proposito se construye un modelo de equilibrio general de generaciones sucesivas con agentes heterogeneos, calibrado para obtener resultados cuantitativos para el caso espanol. Encontramos que el actual sistema de financiacion es susceptible de mejora en su eficiencia, medida en terminos de variacion equivalente en el consumo, si se sustituye total o parcialmente por un regimen de impuestos indirectos. Cambios en el periodo de calculo de la pension afectan fundamentalmente a las decisiones temporales de ahorro/desahorro de los agentes.agentes heterogeneos, equilibrio general dinamico, seguridad social

Optimal Design of Social Security Reforms

We argue that a privatization of the social security system, going from a Pay-As-You- Go to a Fully Funded system, can be interpreted as the explicit recognition of an implicit debt and there is no efficiency gain in doing so. As a consequence, potential efficiency gains upon reforming the system come from the elimination of distortions and the optimal management of that implicit debt. Based on that argument, this paper studies the optimal design of a social security privatization in a Pareto improving way. The government decides endogenously how to finance the transition and the welfare of the initial generations alive becomes policy constraint. We find that the government can design a Pareto improving reform that exhibits sizeable welfare gains, arising because of a reduction in labor supply distortions. In contrast, the welfare gain from reducing savings distortions is relatively small. Our approach explicitly provides quantitative policy prescriptions towards the policy design of future and maybe unavoidable social security reforms.

Optimal response to a transitory demographic shock in Social Security financing

The authors consider a transitory demographic shock that affects negatively the financing of retirement pensions-that is, workers either would have to pay more or retirees would receive less. In contrast to the existing literature, the authors endogenously determine optimal policies rather than explore the implications of exogenous parametric responses. Their approach identifies optimal strategies of the Social Security Administration to guarantee the financial sustainability of existing retirement pensions in a Pareto-improving way. Hence, no cohort will pay the cost of the demographic shock. The authors find that the optimal strategy is based on the following ingredients: elimination of compulsory retirement, a change in the structure of labor income taxation, and a temporary increase in the level of government debt.Social security ; Pensions

Optimal fiscal policy in the design of Social Security reforms

The quantitative macroeconomics literature has documented that in the basic Overlapping Generations model a privatization of the social security system, going from a Pay-As-You-Go to a Fully Funded system, generates large long run welfare gains at the cost of substantial welfare losses for initial generations. We propose an alternative to previous literature. In this paper we maximize over the entire policy space, following the optimal fiscal policy approach, rather than comparing alternative policy paths one to one. That is, policies are chosen as part of the optimal design of a social security privatization in a Pareto improving way. The government decides endogenously how to finance the implicit social security liabilities and compensate the initial generations alive during the transition. In contrast with previous analysis the resulting allocation, by construction, lies on the constrained Pareto frontier. We find that the optimal design of reforms exhibits sizeable welfare gains, arising because of the reduction in labor supply distortions. In contrast, the welfare gains coming from the reduction of savings distortions are relatively small.Fiscal policy ; Social security

Generational policy and the macroeconomic measurement of tax incidence

In this paper we show that the generational accounting framework used in macroeconomics to measure tax incidence can, in some cases, yield inaccurate measurements of the tax burden across age cohorts. This result is very important for policy evaluation, because it shows that the selection of tax policies designed to change generational imbalances could be misleading. We illustrate this problem in the context of a Social Security reform where we show how fiscal policy can affect the intergenerational gap across cohorts without impacting the distribution of welfare. We provide a more accurate procedure that only measures changes in generational imbalances derived from policies with real effects.Fiscal policy ; Taxation

Optimal response to a transitory demographic shock in Social Security financing

We examine the optimal policy response to a transitory demographic shock that affects negatively the financing of retirement pensions. In contrast to existing literature, we endogenously determine optimal policies rather than exploring implications of exogenous parametric policies. Our approach identifies optimal strategies of the social security administration to guarantee the financial sustainability of existing retirement pensions in a Pareto improving way. Hence, no cohort will pay the cost of the demographic shock. We find that the optimal strategy is based in the following ingredients: elimination of compulsory retirement, a change in the structure of labor income taxation and a temporary increase in the level of government debt.Social security ; Pensions

On the optimal progressivity of the income tax code

This paper computes the optimal progressivity of the income tax code in a dynamic general equilibrium model with household heterogeneity in which uninsurable labor productivity risk gives rise to a nontrivial income and wealth distribution. A progressive tax system serves as a partial substitute for missing insurance markets and enhances an equal distribution of economic welfare. These beneficial effects of a progressive tax system have to be traded off against the efficiency loss arising from distorting endogenous labor supply and capital accumulation decisions. Using a utilitarian steady state social welfare criterion we find that the optimal US income tax is well approximated by a flat tax rate of 17:2% and a fixed deduction of about $9,400. The steady state welfare gains from a fundamental tax reform towards this tax system are equivalent to 1:7% higher consumption in each state of the world. An explicit computation of the transition path induced by a reform of the current towards the optimal tax system indicates that a majority of the population currently alive (roughly 62%) would experience welfare gains, suggesting that such fundamental income tax reform is not only desirable, but may also be politically feasible. JEL Klassifikation: E62, H21, H24

On the Optimal Progressivity of the Income Tax Code

This paper computes the optimal progressivity of the income tax code in a dynamic general equilibrium model with household heterogeneity in which uninsurable labor productivity risk gives rise to a nontrivial income and wealth distribution. A progressive tax system serves as a partial substitute for missing insurance markets and enhances an equal distribution of economic welfare. These beneficial effects of a progressive tax system have to be traded off against the efficiency loss arising from distorting endogenous labor supply and capital accumulation decisions. Using a utilitarian steady state social welfare criterion we find that the optimal US income tax is well approximated by a flat tax rate of 17.2% and a fixed deduction of about $9,400. The steady state welfare gains from a fundamental tax reform towards this tax system are equivalent to 1.7% higher consumption in each state of the world. An explicit computation of the transition path induced by a reform of the current towards the optimal tax system indicates that a majority of the population currently alive (roughly 62%) would experience welfare gains, suggesting that such fundamental income tax reform is not only desirable, but may also be politically feasible.