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Seminario CEDE - Matthew O. Jackson

We study the consequences of job markets heavy reliance on referrals. Referrals screen candidates and lead to better matches and increased productivity, but disadvantage job-seekers who have few or no connections to employed workers, leading to increased inequality. Coupled with homophily, referrals also lead that group to have relatively low future employment as well. We identify conditions under which distributing referrals more evenly across a population no only reduces inequality, but also improves future productivity and economic mobility. We use the model to examine optimal policies, showing that one-time affirmative action policies involve short-run production losses, but lead to long-term improvements in equality, mobility, and productivity due to induced changes in future referrals. We also examine how the possibility of firing workers changes the effects of referrals. Ver documento

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Universidad de los Andes

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Seminario CEDE - Rocio Madera

We develop a simple methodology to estimate the heterogeneous welfare effects of any small shock to residents within a city. The methodology relies only on modest assumptions regarding residents choice of where to consume and work and delivers an expression that shows that the welfare elasticity to any small shock can be written as a function of (1) the spatial patterns of consumption and income; and (2) the price and wage effects of the shock. We then apply this methodology to ask the question: Is tourism good for locals? Using detailed spatial data on expenditure and income patterns of residents in Barcelona, we show that plausibly exogenous shifts in tourist expenditure due to compositional differences in their country of origin across time and over space in the city crowds out local expenditure by increasing prices but partially compensates through increases in wages. The incidence of the tourism shock, however, is highly heterogeneous across the city, with inner city residents bearing the the largest welfare losses and peripheral residents enjoying the greatest welfare gains.

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Universidad de los Andes

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Seminario CEDE - Elisa Belfiori

Is there an optimal alternative to a global carbon tax? We study this question in a standard neoclassical growth model with a carbon emissions externality using both the Pigouvian and Ramsey motives for taxation. We show that the social optimum is implementable with taxes widely used in countries worldwide such as consumption, energy, income taxes and no carbon taxation. We theoretically characterize and quantitatively estimate the optimal tax rates, and we find that they are well within existing tax rates. We argue that traditional taxes can play a central role in tackling the climate problem as policymakers seem reluctant to introduce a carbon tax and are often keener on changing existing tax rates.

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Universidad de los Andes

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Seminario CEDE - Fabio Sánchez

En este trabajo evaluamos el impacto del Programa Vivienda Gratuita (PVG) sobre las condiciones de vida, de bienestar y de habitabilidad de los hogares beneficiados. Este programa fue una iniciativa del Gobierno colombiano iniciada em 2012 para entregar gratuitamente viviendas nuevas de interés prioritario (VIP) a los hogares más vulnerables del país. Para estimar impactos del programa de manera causal, el presente trabajo aprovecha que el 39% de los beneficiarios del programa fueron seleccionados mediante sorteos de vivienda. Los resultados señalan que el programa cumple con su objetivo en la reducción del déficit cualitativo, cuantitativo y habitacional de vivienda. En adición, los beneficiarios reportan tener mayores niveles de satisfacción con su vida y con su entorno y participan más en organizaciones comunitarias. Por otro lado, los beneficiarios del PVG reducen la probabilidad de ser considerados como pobres dentro de la medición del Índice de Pobreza Multidimensional. Adicionalmente, como impactos de orden superior, el presente trabajo encuentra que los beneficiarios del PVG tienen mayores ingresos laborales, particularmente las mujeres. Simultáneamente, se encuentra que existe una reorganización de los gastos al interior de los hogares beneficiarios: disminuye el gasto en arriendo y aumentan los gastos en servicios públicos, alimentación, educación, salud, transporte e impuesto predial. De igual forma, los hogares beneficiarios del programa tienen una mayor probabilidad de adquirir bienes durables como neveras, lavadoras, computadoras y motos, así como ahorrar en efectivo. Finalmente, se encuentra que los niños y las niñas pertenecientes a los hogares beneficiarios tienen menor riesgo de ausencia y deserción escolares. El principal mecanismo que explica estos resultados radica en que los beneficiarios del programa se relocalizan en lugares donde existe una mayor provisión de bienes públicos y más cercanía a servicios complementarios (como jardines, escuelas, hospitales, supermercados o bancos), así como una mayor actividad económica.

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Zoom

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Seminario CEDE - Francesco Bogliacino

We estimate the causal effect of the Colombian land restitution program on access to microcredit for agriculture. We use the timing of the restitution as the source of identification in an event study approach. Using administrative data from the program and all formal credit transactions, we show a significant increase in access to agricultural microcredit. The effects are stronger two years after the restitution when individuals acquire full property rights. Impacts are mainly driven by loans through the Agrarian Bank and supported by guarantees from the Agricultural Guarantee Fund, which are institutions specifically designed to promote investment in agriculture.

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Universidad de los Andes

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Seminario CEDE - Michael Weintraub

Governments across the developing world rely on their armed forces for domestic policing operations. Advocates of these mano dura (iron fist) policies view them as necessary to control crime, while detractors claim they undermine human rights. We experimentally evaluate a military policing intervention in Cali, Colombia, the countrys third largest city and among its most violent. The intervention involved recurring, intensive military patrols targeting crime hot spots, randomly assigned at the city block level. Using administrative crime and human rights data, surveys, a conjoint survey experiment, a costly behavioral measure, qualitative interviews, and firsthand observations from civilian monitors, we find some suggestive evidence that military policing reduces crime, but only on days and times when soldiers are physically present on the streets. Despite these temporally circumscribed effects, we find strong evidence of increased demand for more aggressive military involvement in policing and other aspects of governance, including increased support for military coups. We also find some suggestive evidence of increased human rights abuses committed by police officers in particular. Finally, we observe a large, significant, and lasting increase in citizens reports of witnessing crime, and a correspondingly large, significant, and lasting increase in their willingness to report crimes to the authorities. We interpret this as evidence of increased vigilance by citizens and increased co-production of security not just between the military and the police, but between civilians and the authorities as well.

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Zoom

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Seminario CEDE - Brenda Samaniego

In this paper, we estimate the effects of a labor market flexibilization policy that allowed part-time contributions to the social security system in Colombia, a country with high levels of informality. We evaluate the impact of the reform along various margins, with a special focus on the effects on formal employment since increasing formality was among the reforms main goals. Using household survey data, we find that the reform increased the probability of new contributions to the social security system within the population targeted by the reform: low-wage, part-time workers. Then, using administrative data and exploiting cross-city and industry variation in take-up, we argue that the reform is associated with a 1.6 percent increase in formal employment. This increase is due to a sharp increase in full-time and part-time formal job creation. We find a small negative effect on mean wages (0.3% decline), consistent with a rise in the use of low-skill, part-time work.

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Universidad de los Andes

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Seminario CEDE - Oskar Nupia

It is a well-established fact that heat exacerbates irritability and anger, which in turns affects human behavior. Using municipality-level data for the 2016 Plebiscite in Colombia that sought to ratify the Peace Agreement between the state and the countrys main guerilla group, we present evidence that heat shocks affected voters behavior. We find that those municipalities exposed to a heat shock during plebiscite day had a higher vote share against the Agreement. To understand the mechanisms behind this result, we exploit municipality-level information on both the political context and the exposition to the most divisive elements of the Agreement. The impact of heat on the plebiscite results was mediated by high exposure to violence, low support for the main opposition party of the Peace Agreement (discontent with the ruling government), and the presence of coca crops.

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Zoom

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Seminario CEDE - Sebnem Kalemli-Ozcan

COVID-19 pandemic had a devastating effect on both lives and livelihoods in 2020. The arrival of effective vaccines can be a major game changer. However, vaccines are in short supply as of early 2021 and most of them are reserved for the advanced economies. We show that the global GDP loss of not inoculating all the countries, relative to a counterfactual of global vaccinations, is higher than the cost of manufacturing and distributing vaccines globally. We use an economicepidemiological model of international production and trade networks and calibrate the model to 65 countries. Our estimates suggest that up to 49 percent of the global economic costs of the pandemic in 2021 are borne by the advanced economies even if they achieve universal vaccination in their own countries. Ver documento

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