The effects of longevity and distortions on education and retirement

This article studies the impact of longevity and taxation on life-cycle decisions and long-run income. Individuals allocate optimally their total lifetime between education, working and retirement. They also decide at each moment how much to save or consume out of their income, and after entering the labor market how to divide their time between labor and leisure. The model incorporates experience-earnings profiles and the return-to-education function that follows evidence from the labor literature. In this setup, increases in longevity raises the investment in education - time in school - and retirement. The model is calibrated to the U.S. and is able to reproduce observed schooling levels and the increase in retirement, as the evidence shows. Simulations show that a country equal to the U.S. but with 20% smaller longevity will be 25% poorer. In this economy, labor taxes have a strong impact on the per capita income, as it decreases labor effort, time at school and retirement age, in addition to the general equilibrium impact on physical capital. We conclude that life-cycle effects are relevant in analyzing the aggregate outcome of taxation.

Infrastructure privatization in a neoclassical economy : macroeconomic impact and welfare computation

In this paper a competitive general equilibrium model is used to investigate the welfare and long run allocation impacts of privatization. There are two types of capital in this model economy, one private and the other initially public ("infrastructure"), and a positive externality due to the latter is assumed. A benevolent government can improve upon decentralized allocation internalizing the externality, but it introduces distortions in the economy through the finance of its investments. It is shown that even making the best case for public action - maximization of individuals' welfare, no• operation inefficiency and free supply to society of infrastructure services - privatization is welfare improving for a large set of economies. Hence, arguments against privatization based solely on under-investment are incorrect, as this maybe the optimal action when the financing of public investment are considered. When operation inefficiency is introduced in the public sector, gains from privatization are much higher and positive for most reasonable combinations of parameters .

Os determinantes macroeconômicos da estrutura a termo das expectativas de inflação no Brasil

Este trabalho visa analisar a dinâmica das expectativas de inflação em função das condições macroeconômicas. Para tal, extraímos as curvas de inflação implícita na curva de títulos públicos pré-fixados e estimamos um modelo de fatores dinâmicos para sua estrutura a termo. Os fatores do modelo correspondem ao nível, inclinação e curvatura da estrutura a termo, que variam ao longo do tempo conforme os movimentos no câmbio, na inflação, no índice de commodities e no risco Brasil implícito no CDS. Após um choque de um desvio padrão no câmbio ou na inflação, a curva de inflação implícita se desloca positivamente, especialmente no curto prazo e no longo prazo. Um choque no índice de commodities também desloca a curva de inflação implícita positivamente, afetando especialmente a parte curta da curva. Em contraste, um choque no risco Brasil desloca a curva de inflação implícita paralelamente para baixo.

Infrastructure privatization in a neoclassical economy: macroeconomic impact and welfare computation

In this paper a competi tive general equilibrium model is used to investigate the welfare and long run allocation impacts of privatization. There are two types of capital in this model economy, one private and the other initially public ("infrastructure"), and a positive extemality due to the latter is assumed. A benevolent governrnent can improve upon decentralized allocation intemalizing the extemality, but it introduces distortions in the economy through the finance of its investments. It is shown that even making the best case for public action - maximization of individuais' welfare, no operation inefficiency and free supply to society of infrastructure services - privatization is welfare improving for a large set of economies. Hence, arguments against privatization based solely on under-investment are incorrect, as this maybe the optimal action when the financing of public investment are considered. When operation inefficiency is introduced in the public sector, gains from privatization are much higher and positive for most reasonable combinations of parameters.

A structuralist Philips curve

This paper presents a structuralist model of the Philips curve and applies it to the US and Brazilian economies. The theoretical model starts from a simple markup rule to build a Philips curve based on the assumptions that firms have a desired rate of profit and wokers have a target real wage. Inflation expectations are modeled in terms of current inflation and the governments’ target, and the model shows that relative prices can have both a short-run and long-run influence on inflation. When applied to the US, the structuralist Philips curve results in a nonlinear model in which there are two steady states for inflation, and where the wageshare of income becomes the main instrument to drive inflation to the governments’ target. When applied to Brazil, the structuralist Philips curve reveals a nonlinear relationship between long-run inflation and the real exchange rate, so that the same inflation target can be consistent with more than one value of the exchange rate. The main conclusion of the paper is that a structuralist specification of the Philips curve is a useful instrument to model many macroeconomic topics as well as alternative theoretical closures.

Desempenho de longo prazo de IPOs no Brasil: um estudo para o período de 2004 a 2015

O objetivo deste trabalho é avaliar o desempenho de longo prazo das empresas que abrem o capital no Brasil. Os fenômenos de (1) valorização no primeiro dia de negócios pós-IPO (underpricing) seguido de (2) desempenho inferior ao mercado no longo prazo (long-run underperformance) foram amplamente documentados em trabalhos de outros autores. O foco do estudo está em verificar a persistência dessa baixa performance quando alongamos o período de avaliação para 5 anos. Adicionalmente, o estudo pretende entender que fatores são determinantes no desempenho destas ações no longo prazo. O trabalho analisa 128 IPOs ocorridos no período de 2004 a 2012 na Bovespa. Os resultados apontam para evidências estatisticamente significantes de underpricing. Este underpricing foi mais acentuado entre os anos de 2004 a 2008, período precursor da crise financeira do subprime. Quando se analisa a performance de longo prazo os resultados apontam que a carteira de IPOs apresentou performance abaixo do mercado até o 29° mês. Os IPOs lançados no período pré-crise do subprime tiveram performance abaixo do mercado após 3 anos, enquanto que os IPOs lançados no pós-crise tiveram retorno acima do mercado para 3 e 5 anos. Não foi identificada a persistência da baixa performance dos IPOs além do 29° mês. Três variáveis principais mostraram significância na explicação dos retornos de longo prazo: (1) o período de lançamento das ações, (2) o percentual de alocação de investidores estrangeiros, (3) e a reputação do coordenador da oferta. Os IPOs lançados no período pós-crise do subprime observaram melhor performance no longo prazo. Também apresentaram melhor performance os IPOs com maior presença de investidor estrangeiro. Adicionalmente, existe uma relação inversa entre a reputação do coordenador líder da oferta e a performance de longo prazo.