Optimal fiscal policy in a model with inherited aspirations and habit formation

In this paper, we analyze optimal fiscal policies in an overlapping generations framework, where preferences exhibit aspirations in consumption and environmental quality as well as habit formation. We focus on the second best policies when the government needs to finance a given stream of public expenditures by using distortionary taxes. We derive necessary and sufficient conditions under which the competitive equilibrium is characterized by levels of capital and environmental quality that are too small and a level of labor supply that is too large. Our numerical simulations show that an optimal fiscal policy can be used as an effective stabilization device and that when consumption taxes are fixed, the planner implements maintenance investment and capital income subsidies while financing public spending through labor and fixed consumption taxes.     

Information Exchange and Transnational Environmental Problems

This paper analyzes information exchange in a model of transnational pollution control in which countries use private information in independently determining their domestic environmental policies. We show that countries may not always have an incentive to exchange their private information. However, for a sufficiently high degree of predictability of domestic environmental policy processes, the expected welfare from sharing information is greater than the expected welfare from keeping it private. The minimum degree of policy predictability for which information sharing occurs increases with the level of environmental risk. Intuitively, information exchange can help mitigate the perception of global uncertainty (both political and scientific) that surrounds transnational environmental problems and potentially improve welfare if policymaking processes are sufficiently aligned with evidence-based approaches (predictable).     

Party Discipline and Environmental Policy: The Role of “Smoke‐filled Back Rooms”*

We adopt the view that greater party discipline induces legislators to commit to promised policies after being elected. We then develop the hypothesis that the effect of party discipline on the stringency of environmental policy is conditional on the degree of government corruption. Our empirical work suggests that greater party discipline results in more stringent environmental policies when the level of corruption is relatively low, but in weaker policies when the level of corruption is comparatively high.     

A model of political parties

This paper presents a new model of political parties. I assume that the role of parties is to increase the commitment ability of politicians vis-à-vis the voters. Whereas a politician running alone can only offer his ideal policy, the set of policies that a party can commit to is the Pareto set of its members. I show that the commitment mechanisms provided by the institution of parties has no effect when the policy space is unidimensional; the policies parties can induce in equilibrium arise also when politicians are running independently. However, when the policy space is multidimensional, politicians use the vehicle of parties to offer equilibrium policies that they cannot offer in their absence.     

Renewable resource regulation and uncertain prices: The role of financial structure and bankruptcy

We analyze the interaction between regulatory policies and the financial structure of a fishery and show that firms with debts may respond differently to regulations than firms that have not accumulated debts. There are conditions where more stringent regulation is counterproductive, providing a perverse incentive to increase harvesting effort. We show that optimal regulation depends on the sector's financial structure, and demonstrate that there are cases when intervention is counterproductive, or too costly to implement. There are also cases where successful regulatory intervention can only be implemented when accompanied by a sufficiently large subsidy.     

International interdependencies in fiscal stabilization policies

Trade links imply that business cycle fluctuations are transmitted among trade partners. To the extent that fiscal policy can mitigate business cycle fluctuations international interdependencies in stabilization policies arise. We analyse in a two country general equilibrium model the role of fiscal policy in mitigating risk or providing implicit insurance in the presence of capital market imperfections and adjustment failures (rigid wages). It is shown that there is a welfare case for an active stabilization policy, and that it is larger in the presence of adjustment failures (rigid wages). Non-cooperative policy decisions imply inefficiencies in fiscal stabilization policies, which in the case of flexible wages may imply too much stabilization, whereas stabilization is always insufficient in the case of rigid wages.     

International transmission of environmental policy: A New Keynesian perspective

In this paper we examine the international transmission of environmental policy using a New Keynesian model of the global economy. We first consider the case in which the quality of the environment affects utility, but not productivity. This allows us to look at the trade-off between environmental quality and output. We then consider the case in which the quality of the environment increases productivity but does not affect utility. Our main results show that in both cases a unilateral implementation of a more stringent environmental policy by the domestic country raises foreign welfare under a benchmark parameterization. Our modeling strategy allows an analysis of how nominal rigidities interact with the implementation of environmental reforms, by allowing the domestic country to shift, through exchange rate depreciation, parts of the costs of more stringent environmental policies to the foreign one.     

Non-cooperative and cooperative policy reforms under uncertainty and spillovers

When countries need to implement costly economic policy reforms, these often imply uncertainties about their effectiveness for the home country and their spillovers to other countries. We develop a model to show that under these circumstances countries implement too few or too many policy reforms. From a social perspective, too many reforms follow if the spillover effects of reforms become sufficiently uncertain. Since centralization of policies to correct inefficient policies is often not possible, we look for alternative instruments that can restore the efficient level of reforms. We compare subsidizing reform efforts with insuring against bad outcomes, and argue that subsidies are advantageous in terms of requiring less information for implementation.     

Federal transfers, environmental policy and economic growth

We study the effects of commonly used cross-country transfer programs on uncoordinated national environmental policies, economic growth and natural resources in a federal economy. Natural resources are a federation-wide public good. In each member country, production degrades the environment, but clean-up policy can improve it. Clean-up policy is financed by taxes on polluting firms’ output and cross-country redistributive transfers. We solve for a symmetric Nash equilibrium among national governments. Transfer policies that lead to higher pollution taxes make existence harder, and are harmful not only to growth but also to the environment. The best way to improve environmental quality is to implement a taxation system that stimulates growth and broadens tax bases to finance national clean-up policies.     

Environmental Ramsey Policy and Sustainable Balanced Growth

We study the link among economic growth, renewable natural resources and environmental policy. The context is a general equilibrium model of endogenous growth and environmental policy. We examine the conditions under which sustainable growth is both feasible and optimal, where the latter takes the form of second‐best optimal environmental Ramsey policies. We also investigate the conditions for an inverted U‐shaped relation between environmental policies and sustainable growth. We show that the combination of environmental production externalities and second‐best optimal Ramsey policies can lead to both local and global indeterminacy. The introduction of environmental policy, although well‐intentioned and designed to correct for market inefficiencies, triggers an expectations coordination problem; thereby differences in environmental quality and economic growth can be explained among countries with the same fundamentals.     

Gender and climate change: Do female parliamentarians make difference?

This paper investigates whether female political representation in national parliaments influences climate change policy outcomes. Based on data from a large sample of countries, we demonstrate that female representation leads countries to adopt more stringent climate change policies. We exploit a combination of full and partial identification approaches to suggest that this relationship is likely to be causal. Moreover, we show that through its effect on the stringency of climate change policies, the representation of females in parliament results in lower carbon dioxide emissions. Female political representation may be an underutilized tool for addressing climate change.     

Political intergenerational risk sharing

In a stochastic two-period OLG model, featuring an aggregate shock to the economy, ex-ante optimality requires intergenerational risk sharing. We compare the level of intergenerational risk sharing chosen by a benevolent government and by an office-seeking politician. In our political system, the transfer of resources across generations is determined as a Markov equilibrium of a probabilistic voting game. Low realized returns on the risky asset induce politicians to compensate the old through a PAYG system. This political system typically generates an intergenerational risk sharing scheme that is (i) larger, (ii) more persistent, and (iii) less responsive to the realization of the shock than the social optimum. This is because the current politician anticipates her transfers to the elderly to be compensated by future politicians through offsetting transfers, and hence overspends.     

Can Understanding Spatial Equilibria Enhance Benefit Transfers for Environmental Policy Evaluation?

A conceptual model of consumer sorting in markets for housing, labor and health care is outlined and used to make three points about how benefit transfers are used for environmental policy evaluation. First, the standard approach to assessing benefits of air quality improvements by transferring the value of a statistical life from labor market studies embeds several untested (but testable) assumptions. Second, if the cost of an environmental policy exceeds its capitalized effect on housing prices, then the capitalization effect is an insufficient statistic for determining whether benefits exceed costs. Third, there are several ways in which equilibrium sorting models may be usefully extended to assess distributional welfare effects of environmental policies.     

Environment,public debt,and epidemics

We study whether fiscal policies, especially public debt, can help to curb the macroeconomic and health consequences of epidemics. Our approach is based on three main features: we introduce the dynamics of epidemics in an overlapping generations model to take into account that old people are more vulnerable; people are more easily infected when pollution is high; public spending in health care and public debt can be used to tackle the effects of epidemics. We show that fiscal policies can promote convergence to a stable disease-free steady state. When public policies are not able to permanently eradicate the epidemic, public debt, and income transfers could reduce the number of infected people and increase capital and GDP per capita. As a prerequisite, pollution intensity should not be too high. Finally, we define a household subsidy policy that eliminates income and welfare inequalities between healthy and infected individuals.     

Strategic Inter–Regional Transfers

We derive the equilibrium level of redistribution from one mobile factor (say, the rich or capital) to another possibly mobile factor (say, the poor or labour) when regions choose both their inter–regional transfers and redistributive policies non–cooperatively. It is shown that inter–regional transfers are always desirable (to mitigate the fiscal competition), but cannot be sustained (as a Nash equilibrium) when chosen simultaneoulsy with the redistributive policy. On the other hand, if regions can pre–commit to inter–regional transfers before setting their redistributive policy, their strategic effect makes efficient inter–regional transfers sustainable. However, there are also equilibria with inefficiently small inter–regional transfers or no transfers at all. The effects of regional asymmetries and additional regions on these results are also analyzed.     

Consumption externalities and the effects of international income transfers on the global environment

In this paper, we extend the standard model of private provision of public goods by including consumption externalities to characterize a situation in which economic activities pollute the environment. We consider a case in which there are an industrial country which can afford to invest in the environment and a developing country which cannot. Then, we show that international income transfers in both directions can improve the global environmental quality as well as the welfare of each country. We also show that the results have important implications for policies such as official development assistance or the assignment of tradable emission permits.     

Endogenous Pollution Havens: Does FDI Influence Environmental Regulations?*

We suggest a novel perspective on the relationship between the stringency of environmental policies and foreign direct investment (FDI). We develop a political economy model with imperfect product market competition where local and foreign firms jointly lobby the local government for a favorable pollution tax. FDI is found to affect environmental policy, and the effect is conditional on the local government's degree of corruptibility. If the degree of corruptibility is sufficiently high (low), FDI leads to less (more) stringent environmental policy, and FDI thus contributes to (mitigates) the creation of a pollution haven. Our empirical results using panel data from 33 countries support the predictions of the model.     

Believers vs. deniers: Climate change and environmental policy polarization

This paper theoretically studies the consequences of partisanship with an application to environmental policy. We model an election between a right-wing and a left-wing candidate who strategically propose environmental policies to gain the support of an electorate divided based on their climate change beliefs and productive assets. While environmental regulations imply a trade-off between a more sustainable environment and higher incomes for all voters, climate change believers have a higher belief in human activity-induced climate change, which translates into greater expected environmental benefits from policy, and high-asset voters care relatively more about mitigating economic costs. Voters view the left-wing candidate as more effective in addressing environmental challenges, whereas her right-wing opponent is the better candidate to deliver relief from the economic burden of regulations. In equilibrium, there exists policy divergence and the right-wing candidate always proposes the more pro-industry policy. We find that higher asset inequality moves equilibrium policies in a pro-industry direction as long as high-asset voters are ideologically more homogeneous than low-asset ones. Equilibrium policies become further polarized with greater partisanship as those voters with the same climate change belief hold similar ideologies.     

Political contribution caps and lobby formation: Theory and evidence

The perceived importance of “special interest group” money in election campaigns motivates widespread use of caps on allowable contributions. We present a bargaining model in which the effect of a cap that is not too stringent on the amount a lobby can contribute improves its bargaining position relative to the politician. It thus increases the payoff from lobbying, which will therefore increase the equilibrium number of lobbies when lobby formation is endogenous. Caps may then also increase aggregate contributions from lobbies and increase politically motivated government spending. We present empirical evidence from U.S. states that support various predictions of the model. We find a positive effect on the number of PACs formed from enacting laws constraining PAC contributions. Moreover, the estimated effect is non-linear, as predicted by the theoretical model. Very stringent caps reduce the number of PACs, but as the cap increases above a threshold level, the effect becomes positive. Contribution caps in the majority of U.S. states are above this threshold.     

A Public Choice Approach to Strategic and Nonstrategic Environmental Policy

In this paper we take a public choice perspective on strategic environmental policy and international environmental agreements. We examine cooperative and noncooperative environmental policies under governments that are either welfare maximizers (“good dictators”) or tax revenue maximizers (“Leviathans”). We show that Leviathans can perform better in terms of welfare and that good dictators can set higher taxes. We then analyze international environmental agreements and show that the breakdown of environmental cooperation can indeed lead to a welfare gain for all signatory countries. Considering a delegation game between governments, we find that a Pareto‐superior Leviathan outcome can be the unique Nash equilibrium.