Endogenous Optimal Currency Areas

"The Central African Economic and Monetary Community (CAEMC) has been a monetary union for several decades now. According to the hypothesis of endogenous optimal currency areas (OCA), the degree of business cycles synchronization across its member states should be significantly higher today than 40 years ago. Investigating the empirical validity of this hypothesis is important in the context of the African economic integration process. If currency unions are endogenous, then quick monetary integration is a worthwhile option that can be used to accelerate economic integration. On the contrary, if currency unions were not endogenous, then a speedy monetary unification would not benefit countries collectively and might therefore jeopardize the whole regional integration initiative. This paper assesses the endogeneity of CAEMC as an OCA by examining the cross-country synchronization of business cycles along three statistical dimensions: bilateral correlation of cyclical co-movements, similarity of cycle statistical properties, and concordance of cyclical phases. Its innovative contribution is threefold. First, it provides a direct test of the endogeneity hypothesis on a specific currency union. Most previous studies instead rely on panel estimates of global datasets. Second, it expands the existing literature on the monetary geography of Africa. Indeed, there are several papers that study whether or not specific African regions are OCA. However, these papers generally look at the ex-ante conditions for optimality, leaving the issue of endogeneity of OCA criteria unexplored. The paper fills in this gap. Third, the paper presents a business cycle chronology for the six CAEMC members, thus opening up new opportunities to understand the cyclical characterization of economic systems and policies in the region"--Abstract.

This paper tests an endogeneity hypothesis of optimum currency area (OCA) criteria (Frankel and Rose, 1998) on a cross-section of OECD countries between 1990 and 1999. The findings indicate that convergence of business cycles relates to intra-industry trade, but has no direct relation between business cycles and bilateral trade intensity. As far as intra-industry trade is positively correlated with trade intensities, this result confirms the OCA endogeneity hypothesis. The endogeneity of OCA linkage criteria implies extensive business cycle harmonization between CEECs and EU countries in the medium term. Published in: Contemporary Economic Policy vol. 22, no 1 (2004) pp. 1-12, ISSN 1074-3529.

In this paper we show that a currency area can be a self-validating optimal policy regime, even when monetary unification does not foster real economic integration and intra-industry trade. This is because profit-maximizing producers in a currency area adopt endogenous pricing strategies that make exchange rate fluctuations highly costly in welfare terms. In our model exporters choose the degree of exchange rate pass-through onto export prices given monetary policy rules, and monetary authorities choose optimal policy rules taking firms' pass-through as given. We show that there exist two equilibria, which define two self-validating currency regimes. In the first, firms preset prices in domestic currency only, and let foreign-currency prices to be determined by the law of one price. Optimal policy rules then target the domestic output gap and floating exchange rates support the flex-price allocation. In the second equilibrium firms optimally preset prices in local currency, and a monetary union is the optimal policy choice for all countries. Although business cycles are more synchronized with a common currency, flexible exchange rates are superior in terms of welfare.

This paper investigates the circumstances under which it is beneficial to participate in a currency area. A two-country monetary model of trade with nominal rigidities encompasses the real and monetary arguments suggested by the optimum currency area literature: correlation of real shocks, international factor mobility, fiscal adjustment, openness, difference in national inflationary biases, correlation of monetary shocks, and benefits of a single currency. The effect of openness on the net benefits is ambiguous, contrary to the usual argument that more open economies are better candidates for a currency area. Countries do not necessarily agree on whether a given currency union should be created.

A model of optimum currency areas is presented using a general equilibrium model with regionally differentiated goods. The choice of a currency union depends upon the size of the underlying disturbances, the correlation between these disturbances, the costs of transactions across currencies, factor mobility across regions, and the interrelationships between demand for different goods. It is found that, while a currency union can raise the welfare of the regions within the union, it unambiguously lowers welfare for those outside the union.

This book is the second of three volumes that uses the theory of Optimal Currency Areas (OCAs) and applied econometric techniques to provide the reader with a compact analysis of the Euro area, its evolution and future perspectives. Each volume of the series is dedicated to one of the three critical criteria for an OCA: 1) business cycle synchronization, 2) factor mobility and 3) the existence of a risk sharing system. This second volume deals with the criterion of factor mobility. The authors investigate and discuss whether there are signs of labor and capital mobility that have helped dampen economic shocks among the regions of the Euro during its short history. The book is of interest to a wide range of researchers in financial economics, macroeconomics and economic policy.

Surveys the recent literature on optimal currency areas (OCAs). Topics that are covered include theoretical developments in the context of general-equilibrium models and empirical work on shocks asymmetry and adjustment mechanisms.

This work aims to assess whether the hypothesis of endogenous synchronisation of shocks is verified in the European Economic and Monetary Union (EMU). A state-space model, which yields time-varying coefficients, is estimated with structural demand and supply shocks to several European economies and those of Germany. The goals is to obtain dynamic measures of correlation, which can help understand to what extent have structural shocks to European economies become more or less synchronised with Germany's throughout the EMU experience. Evidence shows that demand shocks have become increasingly synchronised, which corroborates the hypothesis of endogeneity. However, this phenomenon does not seem to be restricted only to EMU members. Furthermore, results prove that this increasing synchronisation occurred mainly in peripheral countries. For supply shocks conclusions are not as clear. Nevertheless, results do seem to point to the fact the countries outside the EMU have not become more structurally similar to Germany.