Wage Dispersion: Why Are Similar Workers Paid Differently?

Paperback | January 14, 2005

byDale T. Mortensen

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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.

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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 p...

Dale Mortensen is Ida C. Cook Professor of Economics, a former Chairman of the Economics Department, and Director of the Mathematical Methods in the Social Sciences Program at Northwestern University. He is a founding editor of the Review of Economic Dynamics and a Fellow of the Econometrics Society and the American Academy of Arts and...

other books by Dale T. Mortensen

Job Matching, Wage Dispersion, and Unemployment
Job Matching, Wage Dispersion, and Unemployment

Paperback|Jul 16 2016

$45.58 online$47.50list price
Format:PaperbackDimensions:160 pages, 9 × 6 × 0.5 inPublished:January 14, 2005Publisher:The MIT PressLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0262633191

ISBN - 13:9780262633192

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Mortensen's book is a superb treatment of a very old question: Why are similar workers not paid the same? Readers are introduced to the empirical evidence on wage dispersion, and then shown how the tools of modern search theory can be used to fashion a compelling answer. I predict that this short book will be adopted at all major Ph.D. programs in Economics.