Dale T. Mortensen and Christopher A. Pissarides are the recipients (with Peter Diamond) of the Nobel memorial Prize in Economics 2010. They have made path-breaking contributions to the analysis of markets with search and matching frictions, which account for much of the success of job search theory and the flows approach in becoming a leading tool for microeconomic and macroeconomic analysis of labor markets. Both scientists have gained groundbreaking insights through individual as well as joint research. Consequently, this volume not only features several papers which helped shape the equilibrium search model, including some early contributions which have initiated the research on what is known today as the search and matching model of the labor market, but it also presents a joint paper by the IZA Prize Laureates, which is a complete statement of the equilibrium search and matching model with endogenous job creation and job destruction. As part of the IZA Prize Series, the book presents a selection of their most important work which has highly enriched research on unemployment as an equilibrium phenomenon, on labor market dynamics, and on cyclical adjustment.

Dale T. Mortensen and Christopher A. Pissarides are the recipients (with Peter Diamond) of the Nobel memorial Prize in Economics 2010. They have made path-breaking contributions to the analysis of markets with search and matching frictions, which account for much of the success of job search theory and the flows approach in becoming a leading tool for microeconomic and macroeconomic analysis of labor markets. Both scientists have gained groundbreaking insights through individual as well as joint research. Consequently, this volume not only features several papers which helped shape the equilibrium search model, including some early contributions which have initiated the research on what is known today as the search and matching model of the labor market, but it also presents a joint paper by the IZA Prize Laureates, which is a complete statement of the equilibrium search and matching model with endogenous job creation and job destruction. As part of the IZA Prize Series, the book presents a selection of their most important work which has highly enriched research on unemployment as an equilibrium phenomenon, on labor market dynamics, and on cyclical adjustment.

Why are workers with identical skills found in both "good" jobs and "bad" jobs? Why are workers who do similar jobs paid differently, contrary to standard competitive theory? Observable differences in workers doing the same job account for only 30 percent of wage variation. In Wage Dispersion, Dale Mortensen examines the reasons for pay differentials in the other 70 percent. He finds that these differentials, or wage dispersion, are largely the result of job search friction (which arises when workers do not know the wages offered by all employers) and cross-firm differences in wage policy and productivity.Mortensen examines previous theoretical explanations for wage dispersion, testing them against data from a Danish matched employer-employee database. He begins by offering a simple one-period model of the problem, then expands this basic model intertemporally to include the role of on-the-job worker search behavior. Following this, he discusses theoretical modifications that offer an explanation for the nature of observed wage dispersion, particularly the shape of cross-firm wage distribution. He then examines the hypothesis that wage policies are determined by profit-maximizing behavior and finds that the Danish data do not support it; he argues that bilateral wage bargaining is the more likely determinant. Finally, he reviews recent work that extends the basic theoretical framework to explain wage dispersion within firms.