Former scholars

Konstantinos Efstathiou

Former Affiliate Fellow

Expertise: macroeconomics, European governance, International economics

Konstantinos, a Greek citizen, works in Bruegel as an Affiliate Fellow in the Macroeconomics and Governance area. Before joining Bruegel, Konstantinos was at the European Commission, as a Blue Book Trainee in the Cabinet of President Juncker. He also interned at the Central Bank of Luxembourg (BCL) as a research assistant, involved in projects related to the Wage Dynamics Network (WDN) research group.

He holds a Master in International Economics and International Relations from the Johns Hopkins University School of Advanced International Studies (SAIS), where he specialized in Quantitative Methods and European Studies.

Konstantinos’ research interests include macroeconomics, European economic governance and international economics.

Konstantinos is a native speaker of Greek, speaks fluent English and has good knowledge of French.

Declaration of interests 2017

Declaration of interests 2018

Contact information

[email protected]

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External Publication

What drives implementation of the European Union’s policy recommendations to its member countries?

Article published in the Journal of Economic Policy Reform.

By: Konstantinos Efstathiou and Guntram B. Wolff Topic: Macroeconomic policy Date: April 13, 2022
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External Publication

Analysis of developments in EU capital flows in the global context

This report presents an overview of the recent trends of capital flows, focused especially on the past year. It provides a detailed analysis at the global level and at the European Union level.

By: Grégory Claeys, Maria Demertzis, Marta Domínguez-Jiménez, Konstantinos Efstathiou, Tanja Linta and Bruegel Topic: Macroeconomic policy Date: March 16, 2020
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Opinion

EU policy recommendations: A stronger legal framework is not enough to foster national compliance

In 2011, the EU introduced stricter rules to monitor the implementation of country-specific policy recommendations. Using a new dataset, this column investigates whether these new laws have increased national compliance. There is no evidence that these stricter processes matter for implementation rates, whereas macroeconomic fundamentals and market pressure are important determinants of implementation progress. These results suggest ways to improve the effectiveness of European policy coordination that go beyond stronger legal processes.

By: Konstantinos Efstathiou, Guntram B. Wolff and Bruegel Topic: Macroeconomic policy Date: July 23, 2019
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Blog Post

The breakdown of the covered interest rate parity condition

A textbook condition of international finance breaks down. Economic research identifies the interplay between divergent monetary policies and new financial regulation as the source of the puzzle, and generates concerns about unintended consequences for financing conditions and financial stability.

By: Konstantinos Efstathiou and Bruegel Topic: Banking and capital markets Date: July 1, 2019
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External Publication

Soaring house prices in major cities: how to spot and moderate them

This article examines whether there are regional differences in house price growth within European countries and find a stronger cyclical pattern in capital cities compared to other regions, indicating a clear rationale for regional-level tools. The authors recommend using macro-prudential measures at a regional level, in particular loan-to-value and debt-to-income limits, to dampen the housing boom-bust cycle.

By: Grégory Claeys, Konstantinos Efstathiou, Dirk Schoenmaker and Bruegel Topic: Macroeconomic policy Date: June 19, 2019
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Blog Post

The campaign against ‘nonsense’ output gaps

A campaign against “nonsense” consensus output gaps has been launched on social media. It has triggered responses focusing on the implications of output gaps for fiscal policy under EU rules, especially for Italy. But the debate about the reliability of output-gap estimates is more wide-ranging.

By: Konstantinos Efstathiou and Bruegel Topic: Macroeconomic policy Date: June 17, 2019
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Blog Post

The next ECB president

On May 28th, EU heads of state and government will start the nomination process for the next ECB president. Leaving names of possible candidates aside, this review tries to isolate the arguments about what qualifications the new president should have and what challenges he or she is likely to face.

By: Bruegel and Konstantinos Efstathiou Topic: Macroeconomic policy Date: May 27, 2019
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Blog Post

The latest European growth-rate estimates

The quarterly growth rate of the euro area in Q1 2019 was 0.4% (1.5% annualized), considerably higher than the low growth rates of the previous two quarters. This blog reviews the reaction to the release of these numbers and the discussion they have triggered about the euro area’s economic challenges.

By: Konstantinos Efstathiou Topic: Macroeconomic policy Date: May 20, 2019
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Blog Post

Breaking up big companies and market power concentration

Senator Elizabeth Warren proposes the break-up of big tech companies. A report for the UK government presents another approach for regulating the digital economy. And IMF research serves as a reminder that concentration of market power extends beyond digital. This blog reviews the debate.

By: Konstantinos Efstathiou and Bruegel Topic: Digital economy and innovation Date: April 29, 2019
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Working Paper

What drives national implementation of EU policy recommendations?

The authors use a newly-compiled dataset to investigate whether and why European Union countries implement the economic policy recommendations they receive from the EU.

By: Konstantinos Efstathiou, Guntram B. Wolff and Bruegel Topic: Macroeconomic policy Date: April 25, 2019
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Blog Post

The Alstom-Siemens merger and the need for European champions

What’s at stake: The European Commission blocked the merger between Alstom and Siemens, triggering the ire of the French and German governments. A Franco-German proposal to revamp merger control in the EU has given rise to a lively debate on the need for European champions.

By: Konstantinos Efstathiou and Bruegel Topic: Digital economy and innovation Date: March 11, 2019
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Blog Post

What to look out for in the latest European Semester package

Implementation of the European Commission’s country-specific policy recommendations (CSRs) is at a low rate overall. Whether this trend has continued, particularly among those countries judged to have excessive macroeconomic imbalances, will be evident in the soon-to-be-released reports of the Commission.

By: Konstantinos Efstathiou, Guntram B. Wolff and Bruegel Topic: Macroeconomic policy Date: February 26, 2019
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