1. Lecture 8: Optimum Currency Areas European Economic Issues © Baldwin & Wyplosz 2003 Reading: Sloman Chapter 25 Baldwin & Wyplosz Ch12 Swann Chapter 7

2. A Good Question, No Simple Answer Should currency area borders coincide with national borders?Should currency area borders coincide with national borders? –is it a good idea for California to be on the US dollar?

3. A Good Question, No Simple Answer Should currency area borders coincide with national borders?Should currency area borders coincide with national borders? –is it a good idea for California to be on the US dollar? Source: Baldwin and Wyplosz

4. A Good Question, No Simple Answer Should currency area borders coincide with national borders?Should currency area borders coincide with national borders? If not, how best to delineate currency areas?If not, how best to delineate currency areas? What economic criteria should be used?What economic criteria should be used?

5. In a Nutshell The benefits:The benefits: –money exhibits increasing returns to scale (network externalities) –the world is the way to maximize these benefits. –One money reduces nominal uncertainty –One money eliminates trade distortions The costs:The costs: –loss of monetary and exchange rate instruments matters (only) in presence of: matters (only) in presence of: –price and wage stickiness –asymmetric shocks.

6. Focusing on Costs Start with the idea that benefits argue for one worldwide currency.Start with the idea that benefits argue for one worldwide currency. Ask why not.Ask why not. Why would we need individual monetary policy?Why would we need individual monetary policy? Asymmetric shocks or shocks that affect us asymmetricallyAsymmetric shocks or shocks that affect us asymmetrically E.g Coffee prices (? D or S shock?)E.g Coffee prices (? D or S shock?) Oil Prices (? D or S shock?)Oil Prices (? D or S shock?) Different intuitional settings such as home- ownership or labour law (Maybe)Different intuitional settings such as home- ownership or labour law (Maybe)

7. Focusing on Costs So if have asymmetric shocks might want to react differentlySo if have asymmetric shocks might want to react differently But Fiscal Policy or Monetary PolicyBut Fiscal Policy or Monetary Policy And if Monetary Policy–does it workAnd if Monetary Policy–does it work Do changes in exchange rates influence REAL economy –for good?Do changes in exchange rates influence REAL economy –for good? Answer to these questions determines viewsAnswer to these questions determines views

8. Implications of Asymmetric Shocks and Effective Monetary Policy IFF believe that monetary policy can positively influence real variablesIFF believe that monetary policy can positively influence real variables (By that we mean that we know precisely what will happen when we make policy changes not that something will happen but we are not very sure what ex ante)(By that we mean that we know precisely what will happen when we make policy changes not that something will happen but we are not very sure what ex ante) THEN may want to divide world up into suitable currency areas.THEN may want to divide world up into suitable currency areas. The analysis develops six OCA criteria.The analysis develops six OCA criteria.

9. Criterion 1 (Mundell): Labour Mobility In an OCA labour moves easily across national borders.In an OCA labour moves easily across national borders. Caveats:Caveats: –labour mobility is easy within national borders (culture, language, legislation, welfare, etc.) –capital mobility: difference between financial and physical capital –in presence of country specialization, skills also matter.

10. Criterion 2 (Kenen): Production Diversification Countries whose production and exports are widely diversified and of similar structure form an OCA.Countries whose production and exports are widely diversified and of similar structure form an OCA. Indeed, in that case, there are few asymmetric shocks and each of them is likely to be of small concern.Indeed, in that case, there are few asymmetric shocks and each of them is likely to be of small concern.

11. Criterion 3 (McKinnon): Openness Countries which are very open to trade and trade heavily with each other form an OCA.Countries which are very open to trade and trade heavily with each other form an OCA. Distinguish between traded and nontraded goods:Distinguish between traded and nontraded goods: –traded good prices are set worldwide –a small economy is price-taker, so the exchange rate does not affect competitiveness. In the limit, if all goods are traded, domestic good prices must be flexible and the exchange rate does not matter for competitiveness. (But matters for what you get for your exports)In the limit, if all goods are traded, domestic good prices must be flexible and the exchange rate does not matter for competitiveness. (But matters for what you get for your exports)

12. Criterion 4: Fiscal Transfers Countries that agree to compensate each other for adverse shock form an OCA.Countries that agree to compensate each other for adverse shock form an OCA. Transfers can act as an insurance that mitigates the costs of an asymmetric shock.Transfers can act as an insurance that mitigates the costs of an asymmetric shock. Transfers exist within national borders:Transfers exist within national borders: –implicitly through the welfare system –explicitly in federal states.

13. Criterion 5: Homogeneous Preferences Countries that share a wide consensus on the way to deal with shocks form an OCA.Countries that share a wide consensus on the way to deal with shocks form an OCA. Matters primarily for symmetric shocks:Matters primarily for symmetric shocks: –prevalent when the Kenen criterion is satisfied. May also help for asymmetric shocks:May also help for asymmetric shocks: –better understanding of partners actions –encourages transfers.

14. Criterion 6: Commonality of Destiny Countries that view themselves as sharing a common destiny better accept the costs of operating an OCA.Countries that view themselves as sharing a common destiny better accept the costs of operating an OCA. A common currency will always face occasional asymmetric shocks that result in temporary conflicts of interests:A common currency will always face occasional asymmetric shocks that result in temporary conflicts of interests: –this calls for accepting such economic costs in the name of a higher purpose.

15. Is Europe An OCA? Asymmetric effects of symmetric shocks: effects on GDP and prices of a change of the common interest rate.Asymmetric effects of symmetric shocks: effects on GDP and prices of a change of the common interest rate. © Baldwin & Wyplosz 2003 Source: Baldwin and Wyplosz

16. Is Europe An OCA? Asymmetric effects of symmetric shocks: effects on GDP and prices of a change of the common interest rate.Asymmetric effects of symmetric shocks: effects on GDP and prices of a change of the common interest rate. © Baldwin & Wyplosz 2003 Source: Baldwin and Wyplosz

17. Inside the OCA Index: Openness Most EU countries are very open.Most EU countries are very open. The McKinnon criterion is broadly satisfied.The McKinnon criterion is broadly satisfied. © Baldwin & Wyplosz 2003 Source: Baldwin and Wyplosz

18. Inside the OCA Index: Diversification Most EU countries have a diversified production structure (intra- industry trade dominates).Most EU countries have a diversified production structure (intra- industry trade dominates). The Kenen criterion is broadly satisfied and well explains which countries joined the euro area.The Kenen criterion is broadly satisfied and well explains which countries joined the euro area. © Baldwin & Wyplosz 2003

19. Inside the OCA Index: Labour Mobility (1) The labour mobility criterion cannot be black- and-white.The labour mobility criterion cannot be black- and-white. The migration response to economic incentives must factor in many costs:The migration response to economic incentives must factor in many costs: –moving costs –risk of becoming unemployed –longer run career opportunities –family prospects –eligibility to welfare –taxation –cultural/linguistic differences –national attachment.

20. Inside the OCA Index: Labour Mobility (2) An international comparison suggests that labour mobility is low in Europe:An international comparison suggests that labour mobility is low in Europe: –across countries. © Baldwin & Wyplosz 2003

21. Inside the OCA Index: Labour Mobility (2) An international comparison suggests that labour mobility is low in Europe:An international comparison suggests that labour mobility is low in Europe: –across countries –even within countries (% moving region per year). (% moving region per year). © Baldwin & Wyplosz 2003

22. Inside the OCA Index: Labour Mobility (3) Low labour mobility implies that unemployment bears much of the burden of adjustment to shocks.Low labour mobility implies that unemployment bears much of the burden of adjustment to shocks. A US-EU comparison.A US-EU comparison.

23. Inside the OCA Index: Labour Mobility (3) Source: Baldwin and Wyplosz

24. Inside the OCA Index: Transfers The EU does not satisfy the transfer criterion.The EU does not satisfy the transfer criterion. The overall EU budget:The overall EU budget: – is low, capped at 1.27% of EU GDP –entirely used for administration, CAP, regional and structural funds.

25. Inside the OCA Index: Homogeneity of Preferences Little is known about this criterion.Little is known about this criterion.

26. Inside the OCA Index: Commonality of Destiny Little is known about this criterion.Little is known about this criterion. Public opinion polls do not detect deep opposition to EU institutions.Public opinion polls do not detect deep opposition to EU institutions.

27. Inside the OCA Index: Commonality of Destiny © Baldwin & Wyplosz 2003

28. Overall The OCA glass is half full, or half empty.The OCA glass is half full, or half empty. © Baldwin & Wyplosz 2003

29. History Never Ends: The Endogeneity of OCA Criteria Living in a monetary union may help fulfill the OCA criteria over time.Living in a monetary union may help fulfill the OCA criteria over time. Would the US be an OCA without a single common currency?Would the US be an OCA without a single common currency? Will the existence of the euro area change matters too?Will the existence of the euro area change matters too?

30. Will Trade Deepen? Little evidence that reducing exchange rate volatility increases trade.Little evidence that reducing exchange rate volatility increases trade. Mounting evidence that eliminating exchange rate volatility by adopting a common currency raises trade a lot:Mounting evidence that eliminating exchange rate volatility by adopting a common currency raises trade a lot: –estimates range from 50 per cent to 100 per cent –the border effect provides similar estimates.

31. Will Diversification Grow or Decline? Argument 1: intra-industry trade will grow.Argument 1: intra-industry trade will grow. Argument 2: specialisation will increase.Argument 2: specialisation will increase. No firm conclusion so far.No firm conclusion so far.

32. EMU and Labour Markets Mobility may not change much, but wages could become less sticky.Mobility may not change much, but wages could become less sticky. Two views:Two views: –the virtuous circle: labour markets respond to enhanced competition by becoming more flexible –the hardening view: labour markets respond to enhanced competition by increasing protective measures that raise stickiness. The jury is still out.The jury is still out.

33. Are the Other Criteria Endogenous? Transfers:Transfers: –currently no support for more taxes of finance transfers. Homogeneity of preferences:Homogeneity of preferences: –no presumption that it will change soon. Commonality of destiny:Commonality of destiny: –no presumption that it will change soon.

34. In the End Monetary union is not only about economics.Monetary union is not only about economics. The OCA criteria do not send a clear signal:The OCA criteria do not send a clear signal: –the EU is not a perfect OCA –a monetary union may function, at cost. The OCA criteria tell us where the costs will arise:The OCA criteria tell us where the costs will arise: –labour markets and unemployment –political tensions in presence of deep asymmetric shocks.