Chapter 40 The analysis of labor markets using matched employer employee data Matched employer employee data contain information collected from households and individuals as well as information collected from businesses or establishments. Both administrative and sample survey sources are considered. Both longitudinal and cross sectional applications are discussed. We review studies from 17 different countries using 38 different systems for creating the linked data. We provide a detailed discussion of the methods used to create the linked datasets the statistical and economic models used to analyze these data and a comprehensive set of results from the different countries. We consider compensation structure wage and employment mobility and the relation between firm outcomes and worker characteristics in detail. Matched employer employee data provide the empirical basis for further refinements of the theory of workplace organization compensation design mobility and production; however the arrival of these data has been relatively recent.