Efraim Sadka

Bio: Efraim Sadka is an academic researcher from Tel Aviv University. The author has contributed to research in topics: Welfare state & Population. The author has an hindex of 42, co-authored 213 publications receiving 6028 citations. Previous affiliations of Efraim Sadka include National Bureau of Economic Research & Northwestern University.

International Tax Competition and Gains from Tax Harmonization

Abstract: In a world economy there are two types of distortions which can be caused by capital income taxation in addition to the standard closed-economy wedge between the consumer-saver marginal intertemporal rate of substitution and the producer-investor marginal productivity of capital: (i)international differences in intertemporal marginal rates of substitution, implying an inefficient allocation of world savings across countries; and (ii) international differences in the marginal productivity of capital, implying an inefficient allocation of world investment across countries. The paper focuses on the structure of taxation for countries which are engaged in tax competition and on potential gains from s tax harmonization. We show that if the competing countries are sufficiently coordinated with the rest of the world then tax competition leads each country to apply the residence principle of taxation and there are no gains from tax harmonization. If, however there is not sufficient coordination,tax competition leads to low capital income taxes and the tax burden falls on the internationally immobile factors. The outcome is nevertheless still efficient relative to the available constrained set of tax instruments.

Tax Burden and Migration: a Political Economy Theory and Evidence

Abstract: The extent of taxation and redistribution policy is generally determined as a political-economy equilibrium by a balance between those who gain from higher taxes/transfers and those who lose. In a stylized model of migration and human capital formation, we show -- somewhat against the conventi onal wisdom -- that low-skill immigration may lead to a lower tax burden and less redistribution than would be the case with no immigration, even though migrants (naturally) join the pro-tax/transfer coalition. Data on 11 European countries over the period 1974 to 1992 are consistent with the implications of the theory: a higher share of immigrants in the populati on leads to a lower tax rate on labor income, even after controlling for the gen erosity and size of the welfare state, demographics, and the international exposure of the economy. As predicted by the theory, it is the increased share of low education immigrants that leads to the smaller tax burden.

The Aging Population and the Size of the Welfare State

Abstract: Data for the United States and countries in western Europe indicate a negative correlation between the dependency ratio and labor tax rates and the generosity of social transfers, after other factors that influence the size of the welfare state are controlled for. This occurs despite the increased political clout of the dependent population implied by the aging of the population. This paper develops an overlapping generations model of intra‐ and intergenerational transfers (including old‐age social security) and human capital formation that addresses this seeming puzzle. We show that with democratic voting, an increase in the dependency ratio can lead to lower taxes or less generous social transfers.

Economic Reform and the Process of Global Integration

Abstract: WHEN T H E BROOKINGS Panel on Economic Activity began in 1970, the world economy roughly accorded with the idea of three distinct economic systems: a capitalist first world, a socialist second world, and a developing third world which aimed for a middle way between the first two. The third world was characterized not only by its low levels of per capita GDP, but also by a distinctive economic system that assigned the state sector the predominant role in industrialization, although not the monopoly on industrial ownership as in the socialist economies. The years between 1970 and 1995, and especially the last decade, have witnessed the most remarkable institutional harmonization and economic integration among nations in world history. While economic integration was increasing throughout the 1970s and 1980s, the extent of integration has come sharply into focus only since the collapse of communism in 1989. In 1995 one dominant global economic system is emerging. The common set of institutions is exemplified by the new World Trade Organization (WTO), which was established by agreement of more than 120 economies, with almost all the rest eager to join as rapidly as possible. Part of the new trade agreement involves a codification of basic principles governing trade in goods and services. Similarly, the International Monetary Fund (IMF) now boasts nearly universal membership, with member countries pledged to basic principles of currency convertibility. Most programs of economic reform now underway in the developing world and in the post-communist world have as their strategic aim the

A Treatise on the Family

Abstract: A Treatise on the Family. G. S. Becker. Cambridge, MA: Harvard University Press. 1981. Gary Becker is one of the most famous and influential economists of the second half of the 20th century, a fervent contributor to and expounder of the University of Chicago free-market philosophy, and winner of the 1992 Nobel Prize in economics. Although any book with the word "treatise" in its title is clearly intended to have an impact, one coming from someone as brilliant and controversial as Becker certainly had such a lofty goal. It has received many article-length reviews in several disciplines (Ben-Porath, 1982; Bergmann, 1995; Foster, 1993; Hannan, 1982), which is one measure of its scholarly importance, and yet its impact is, I think, less than it may have initially appeared, especially for scholars with substantive interests in the family. This book is, its title notwithstanding, more about economics and the economic approach to behavior than about the family. In the first sentence of the preface, Becker writes "In this book, I develop an economic or rational choice approach to the family." Lest anyone accuse him of focusing on traditional (i.e., material) economics topics, such as family income, poverty, and labor supply, he immediately emphasizes that those topics are not his focus. "My intent is more ambitious: to analyze marriage, births, divorce, division of labor in households, prestige, and other non-material behavior with the tools and framework developed for material behavior." Indeed, the book includes chapters on many of these issues. One chapter examines the principles of the efficient division of labor in households, three analyze marriage and divorce, three analyze various child-related issues (fertility and intergenerational mobility), and others focus on broader family issues, such as intrafamily resource allocation. His analysis is not, he believes, constrained by time or place. His intention is "to present a comprehensive analysis that is applicable, at least in part, to families in the past as well as the present, in primitive as well as modern societies, and in Eastern as well as Western cultures." His tone is profoundly conservative and utterly skeptical of any constructive role for government programs. There is a clear sense of how much better things were in the old days of a genderbased division of labor and low market-work rates for married women. Indeed, Becker is ready and able to show in Chapter 2 that such a state of affairs was efficient and induced not by market or societal discrimination (although he allows that it might exist) but by small underlying household productivity differences that arise primarily from what he refers to as "complementarities" between caring for young children while carrying another to term. Most family scholars would probably find that an unconvincingly simple explanation for a profound and complex phenomenon. What, then, is the salient contribution of Treatise on the Family? It is not literally the idea that economics could be applied to the nonmarket sector and to family life because Becker had already established that with considerable success and influence. At its core, microeconomics is simple, characterized by a belief in the importance of prices and markets, the role of self-interested or rational behavior, and, somewhat less centrally, the stability of preferences. It was Becker's singular and invaluable contribution to appreciate that the behaviors potentially amenable to the economic approach were not limited to phenomenon with explicit monetary prices and formal markets. Indeed, during the late 1950s and throughout the 1960s, he did undeniably important and pioneering work extending the domain of economics to such topics as labor market discrimination, fertility, crime, human capital, household production, and the allocation of time. Nor is Becker's contribution the detailed analyses themselves. Many of them are, frankly, odd, idiosyncratic, and off-putting. …

Export Versus FDI with Heterogeneous Firms

Abstract: Multinational sales have grown at high rates over the last two decades, outpacing the remarkable expansion of trade in manufactures. Consequently, the trade literature has sought to incorporate the mode of foreign market access into the “new” trade theory. This literature recognizes that Ž rms can serve foreign buyers through a variety of channels: they can export their products to foreign customers, serve them through foreign subsidiaries, or license foreign Ž rms to produce their products. Our work focuses on the Ž rm’s choice between exports and “horizontal” foreign direct investment (FDI). Horizontal FDI refers to an investment in a foreign production facility that is designed to serve customers in the foreign market. Firms invest abroad when the gains from avoiding trade costs outweigh the costs of maintaining capacity in multiple markets. This is known as the proximity-concentration tradeoff. We introduce heterogeneous Ž rms into a simple multicountry, multisector model, in which Ž rms face a proximity-concentration trade-off. Every Ž rm decides whether to serve a foreign market, and whether to do so through exports or local subsidiary sales. These modes of market access have different relative costs: exporting involves lower Ž xed costs while FDI involves lower variable costs. Our model highlights the important role of within-sector Ž rm productivity differences in explaining the structure of international trade and investment. First, only the most productive Ž rms engage in foreign activities. This result mirrors other Ž ndings on Ž rm heterogeneity and trade; in particular, the results reported in Melitz (2003). Second, of those Ž rms that serve foreign markets, only the most productive engage in FDI. Third, FDI sales relative to exports are larger in sectors with more Ž rm heterogeneity. Using U.S. exports and afŽ liate sales data that cover 52 manufacturing sectors and 38 countries, we show that cross-sectoral differences in Ž rm heterogeneity predict the composition of trade and investment in the manner suggested by our model. We construct several measures of Ž rm heterogeneity, using different data sources, and show that our results are robust across all these measures. In addition, we conŽ rm the predictions of the proximityconcentration trade-off. That is, Ž rms tend to substitute FDI sales for exports when transport * Helpman: Department of Economics, Harvard University, Cambridge, MA 02138, Tel Aviv University, and CIAR (e-mail: ehelpman@harvard.edu); Melitz: Department of Economics, Harvard University, Cambridge, MA 02138, National Bureau of Economic Research, and Centre for Economic Policy Research (e-mail: mmelitz@ harvard.edu); Yeaple: Department of Economics, University of Pennsylvania, 3718 Locust Walk, Philadelphia, PA 19104, and National Bureau of Economic Research (e-mail: snyeapl2@ssc.upenn.edu). The statistical analysis of Ž rmlevel data on U.S. Multinational Corporations reported in this study was conducted at the International Investment Division, U.S. Bureau of Economic Analysis, under an arrangement that maintained legal conŽ dentiality requirements. Views expressed are those of the authors and do not necessarily re ect those of the Bureau of Economic Analysis. Elhanan Helpman thanks the NSF for Ž nancial support. We also thank Daron Acemoglu, Roberto Rigobon, Yona Rubinstein, and Dani Tsiddon for comments on an earlier draft, and Man-Keung Tang for excellent research assistance. 1 See Wilfred J. Ethier (1986), Ignatius Horstmann and James R. Markusen (1987), and Ethier and Markusen (1996) for models that incorporate the licensing alternative. We therefore exclude “vertical” motives for FDI that involve fragmentation of production across countries. See Helpman (1984, 1985), Markusen (2002, Ch. 9), and Gordon H. Hanson et al. (2002) for treatments of this form of FDI. 3 See, for example, Horstmann and Markusen (1992), S. Lael Brainard (1993), and Markusen and Anthony J. Venables (2000). 4 See also Andrew B. Bernard et al. (2003) for an alternative theoretical model and Yeaple (2003a) for a model based on worker-skill heterogeneity. James R. Tybout (2003) surveys the recent micro-level evidence on trade that has motivated these theoretical models. 5 This result is loosely connected to the documented empirical pattern that foreign-owned afŽ liates are more productive than domestically owned producers. See Mark E. Doms and J. Bradford Jensen (1998) for the United States and Sourafel Girma et al. (2002) for the United Kingdom.

On the Determination of the Public Debt

Abstract: A public debt theory is constructed in which the Ricardian invariance theorem is valid as a first-order proposition but where the dependence excess burden on the timing of taxation implies an optimal time path of debt issue. A central proposition is that deficits are varied in order to maintain expected constancy in tax rates. This behavior implies a positive effect on debt issue of temporary increases in government spending (as in wartime), a countercyclical response of debt to temporary income movements, and a one-to-one effect of expected inflation on nominal debt growth. Debt issue would be invariant with the outstanding debt-income ratio and, except for a mirror effect, with the level of government spending. Hypotheses are tested on U.S. data since World War I. Results are basically in accord with the theory. It also turns out that a small set of explanatory variables can account for the principal movements in interest-bearing federal debt since the 1920s.

Micro-Foundations of Urban Agglomeration Economies

Abstract: This handbook chapter studies the theoretical micro-foundations of urban agglomeration economies. We distinguish three types of micro-foundations, based on sharing, matching, and learning mechanisms. For each of these three categories, we develop one or more core models in detail and discuss the literature in relation to those models. This allows us to give a precise characterisation of some of the main theoretical underpinnings of urban agglomeration economies, to discuss modelling issues that arise when working with these tools, and to compare different sources of agglomeration economies in terms of the aggregate urban outcomes they produce as well as in terms of their normative implications.