Openness, Government Size and the Terms of Trade

Paolo Epifani () and Gino Gancia

No 359, IEW - Working Papers from Institute for Empirical Research in Economics - University of Zurich

Abstract: This paper investigates the relationship between trade openness and the size of governments, both theoretically and empirically. We argue that openness can increase the size of governments through two channels: (1) a terms of trade externality, whereby trade lowers the domestic cost of taxation, and (2) the demand for insurance, whereby trade raises risk and public transfers. We provide a unified framework for studying and testing these two mechanisms. Our main theoretical prediction is that the relative strength of the two explanations depends on a key parameter, namely, the elasticity of substitution between domestic and foreign goods. Moreover, while the first mechanism is inefficient from the standpoint of world welfare, the second is instead optimal. In the empirical part of the paper, we provide new evidence on the positive association between openness and government size and we explore its determinants. Consistently with the terms of trade externality channel, we show that the correlation is contingent on a low elasticity of substitution between domestic and foreign goods. Our findings raise warnings that globalization may have led to inefficiently large governments.

Keywords: Openness; Government Size; Terms of Trade Externality; Elasticity of Substitution between Imports and Exports (search for similar items in EconPapers)
JEL-codes: F1 H1 (search for similar items in EconPapers)
Date: 2008-03
New Economics Papers: this item is included in nep-cba, nep-int, nep-opm and nep-ore
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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Related works:
Journal Article: Openness, Government Size and the Terms of Trade (2009)
Working Paper: Openness, government size and the terms of trade (2008)
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