The authors are the recipients (with Peter Diamond) of the Nobel memorial Prize in Economics 2010 Brings together key papers from top labour economists The authors´ research on labor market search and job matching has significantly directed and shaped the empirical literature Includes new introductory and concluding material from the authors and editors The authors received the IZA Prize in Labor Economics in 2005 for their pioneering research on the analysis of markets with search and matching frictions.