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On Financial Markets Incompleteness, Price Stickiness and Welfare in a Monetary Union

Author

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  • Stéphane Auray

    (EQUIPPE - Economie Quantitative, Intégration, Politiques Publiques et Econométrie - Université de Lille, Sciences et Technologies - Université de Lille, Sciences Humaines et Sociales - PRES Université Lille Nord de France - Université de Lille, Droit et Santé, CREST - Centre de Recherche en Économie et Statistique - ENSAI - Ecole Nationale de la Statistique et de l'Analyse de l'Information [Bruz] - X - École polytechnique - ENSAE Paris - École Nationale de la Statistique et de l'Administration Économique - CNRS - Centre National de la Recherche Scientifique, CIRPEE - Centre interuniversitaire sur le risque, les politiques économiques et l'emploi - Centre Interuniversitaire sur le Risque, les Politiques Economiques et l'Emploi, GREDI - Groupe de recherche en économie et développement international [Sherbrooke] - École de gestion de l'Université de Sherbrooke - UdeS - Université de Sherbrooke)

  • Aurélien Eyquem

    (GATE Lyon Saint-Étienne - Groupe d'Analyse et de Théorie Economique Lyon - Saint-Etienne - ENS de Lyon - École normale supérieure de Lyon - UL2 - Université Lumière - Lyon 2 - UCBL - Université Claude Bernard Lyon 1 - Université de Lyon - UJM - Université Jean Monnet - Saint-Étienne - CNRS - Centre National de la Recherche Scientifique)

Abstract

The paper builds a two-country model of a monetary union with home bias and price stickiness. Incompleteness of financial asset markets is allowed. In this environment, we derive the solution for optimal behavior by the monetary policymaker and show that welfare can be higher under incomplete markets than under complete markets. The argument is a second-best one. In a monetary union with equal nominal rigidity across countries, optimal monetary policy stabilizes aggregate, union-wide inflation, but cannot fully stabilize the country-level inflation rates. Market incompleteness results in less volatility of the terms of trade because part of the adjustment goes through the current account), and hence less volatile national inflation rates. Through this channel, welfare ends up being higher under incomplete markets. These results are also robust when nominal rigidity differs across countries and when the form of the monetary policy is modified.
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Suggested Citation

  • Stéphane Auray & Aurélien Eyquem, 2013. "On Financial Markets Incompleteness, Price Stickiness and Welfare in a Monetary Union," Post-Print halshs-00666055, HAL.
    • Handle: RePEc:hal:journl:halshs-00666055
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    More about this item

    Keywords

    monetary union; asymmetric shocks; financial market incompleteness; price stickiness; welfare;
    All these keywords.

    JEL classification:

    • E51 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Money Supply; Credit; Money Multipliers
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • F36 - International Economics - - International Finance - - - Financial Aspects of Economic Integration
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics

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