Labor Market Polarization Over the Business Cycle
---- Acknowledgements ----
Forthcoming in the 2014 NBER Macroeconomics Annual. Matthew Curtis and Ryan Ruxlow provided outstanding research assistance. For helpful comments we thank, without implicating, the editors (Jonathan Parker and Michael Woodford), the discussants (Richard Rogerson and Fatih Guvenen), Daron Acemoglu, David Autor, Ryan Michaels, Claire Reicher, Paul Willen, and seminar participants at a number of institutions. Thanks are also due to Autor, David Dorn, and Melanie Wasserman for sharing their occupational classification codes. Any remaining errors are our responsibility. The views expressed in this paper are not necessarily those of the Federal Reserve Bank of Boston, the Federal Reserve System, or the National Bureau of Economic Research.