Klein's research focuses on international macroeconomics, which covers topics like international trade, exchange rates, unemployment, government budget policies, monetary policies, and international economic relations among countries. He has also worked on the link between labor markets and international factors like exchange rates and exporting. Klein served as Chief Economist in the Office of International Affairs in the U.S. Treasury from June 2010 through December 2011. He has also been a visiting scholar at the Board of Governors of the Federal Reserve, the Federal Reserve Banks of Boston, New York, Dallas and San Francisco, the Bank of England, and the International Monetary Fund. He currently is a Research Associate of the National Bureau of the National Bureau of Economic Research and the Founder, Executive Editor, and Research Director of the website Econofact.
Analyzes the role of international factors, especially exchange rate movements, on manufacturing jobs in the United States.
Researches the role the exchange rate plays in trade, monetary policy, and macroeconomic outcomes.
Proposes a way to consider differences across types of policies that attempt to limit international trade assets.
Shows that German exporting industries pay higher wages than firms that do not export, a result that has also been found in other countries.
Shows the link between monetary policy, exchange rate policy, and policies towards international trade in assets.