5 Changes in Workplace Segregation in the United States between 1990 and 2000 Evidence from Matched Employer-Employee Data. Introduction In recent work, we have constructed and described the 1990 Decennial Employer-Employee Dataset (DEED) based on matching records in the 1990 Decennial Census of Population to a Census Bureau list of most business establishments in the United States | 5 Changes in Workplace Segregation in the United States between 1990 and 2000 Evidence from Matched Employer-Employee Data Judith Hellerstein David Neumark and Melissa McInerney Introduction In recent work we have constructed and described the 1990 Decennial Employer-Employee Dataset DEED based on matching records in the 1990 Decennial Census of Population to a Census Bureau list of most business establishments in the United States. We have used the 1990 DEED to estimate earnings and productivity differentials in manufacturing by demographic and skill group Hellerstein and Neumark 2007 to study the influence of language skills on workplace segregation and wages Hellerstein and Neumark 2003 to document the extent of workplace segregation by race and ethnicity and to assess the contribution of residential segregation as well as skill to this segregation Hellerstein and Neumark forthcoming . We just recently completed the construction of the 2000 Beta-DEED Judith Hellerstein is an associate professor of economics at the University of Maryland and a research associate of the National Bureau of Economic Research. David Neumark is a professor of economics at the University of California Irvine a research fellow of the Institute for the Study of Labor and a research associate of the National Bureau of Economic Research. Melissa McInerney is a statisician at the . Bureau of the Census Center for Economic Studies and a PhD candidate at the University of Maryland Department of Economics. This research was funded by National Institute of Child Health Human Development NICHD grant R01HD042806. We also thank the Alfred P. Sloan Foundation for its generous support. We are grateful to Ron Jarmin Julia Lane and an anonymous reviewer for helpful comments. The analysis and results presented in this paper are attributable to the authors and do not necessarily reflect concurrence by the Center for Economics Studies the . Bureau of the Census or the Sloan Foundation. This .