Tuesday, September 27, 2005
Tweet[IWS] NBER: Trends in U.S. Wage Inequality: Re-Assessing the Revisionists [September 2005]
IWS Documented News Service
_______________________________
Institute for Workplace Studies Professor Samuel B. Bacharach
School of Industrial & Labor Relations Director, Institute for Workplace Studies
Cornell University
16 East 34th Street, 4th floor Stuart Basefsky
New York, NY 10016 Director, IWS News Bureau
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Trends in U.S. Wage Inequality: Re-Assessing the Revisionists [12 September 2005]
http://papers.nber.org/papers/w11627.pdf
[full-text, 60 pages]
Davi<d H. Autor, Lawrence F. Katz, Melissa S. Kearney
NBER Working Paper No. 11627
Issued in September 2005
---- Abstract -----
http://papers.nber.org/papers/w11627
A large literature documents a substantial rise in U.S. wage inequality and educational wage differentials over the past several decades and finds that these trends can be primarily accounted for by shifts in the supply of and demand for skills reinforced by the erosion of labor market institutions affecting the wages of low- and middle-wage workers. Drawing on an additional decade of data, a number of recent contributions reject this consensus to conclude that (1) the rise in wage inequality was an episodic event of the first-half of the 1980s rather than a secular phenomenon, (2) this rise was largely caused by a falling minimum wage rather than by supply and demand factors; and (3) rising residual wage inequality since the mid-1980s is explained by confounding effects of labor force composition rather than true increases in inequality within detailed demographic groups. We reexamine these claims using detailed data from the Current Population Survey and find only limited support. Although the growth of overall inequality in the U.S. slowed in the 1990s, upper tail inequality rose almost as rapidly during the 1990s as during the 1980s. A decomposition applied to the CPS data reveals large and persistent rise in within-group earnings inequality over the past several decades, controlling for changes in labor force composition. While changes in the minimum wage can potentially account for much of the movement in lower tail earnings inequality, strong time series correlations of the evolution of the real minimum wage and upper tail wage inequality raise questions concerning the causal interpretation of such relationships. We also find that changes in the college/high school wage premium appear to be well captured by standard models emphasizing rapid secular growth in the relative demand for skills and fluctuations in the rate of growth of the relative supply of college workers though these models do not accurately predict the slowdown in the growth of the college/high-school gap during the 1990s. We conclude that these patterns are not adequately explained by either a unicausal skill-biased technical change explanation or a revisionist hypothesis focused primarily on minimum wages and mechanical labor force compositional effects. We speculate that these puzzles can be partially reconciled by a modified version of the skill-biased technical change hypothesis that generates a polarization of skill demands.
_____________________________
This information is provided to subscribers, friends, faculty, students and alumni of the School of Industrial & Labor Relations (ILR). It is a service of the Institute for Workplace Studies (IWS) in New York City. Stuart Basefsky is responsible for the selection of the contents which is intended to keep researchers, companies, workers, and governments aware of the latest information related to ILR disciplines as it becomes available for the purposes of research, understanding and debate. The content does not reflect the opinions or positions of Cornell University, the School of Industrial & Labor Relations, or that of Mr. Basefsky and should not be construed as such. The service is unique in that it provides the original source documentation, via links, behind the news and research of the day. Use of the information provided is unrestricted. However, it is requested that users acknowledge that the information was found via the IWS Documented News Service.
Stuart Basefsky *
Director, IWS News Bureau *
Institute for Workplace Studies *
Cornell/ILR School *
16 E. 34th Street, 4th Floor *
New York, NY 10016 *
*
Telephone: (607) 255-2703 *
Fax: (607) 255-9641 *
E-mail: smb6@cornell.edu *
****************************************
_______________________________
Institute for Workplace Studies
School of Industrial & Labor Relations
Cornell University
16 East 34th Street, 4th floor
New York, NY 10016
________________________________________________________________________
Trends in U.S. Wage Inequality: Re-Assessing the Revisionists [12 September 2005]
http://papers.nber.org/papers/w11627.pdf
[full-text, 60 pages]
Davi<d H. Autor, Lawrence F. Katz, Melissa S. Kearney
NBER Working Paper No. 11627
Issued in September 2005
---- Abstract -----
http://papers.nber.org/papers/w11627
A large literature documents a substantial rise in U.S. wage inequality and educational wage differentials over the past several decades and finds that these trends can be primarily accounted for by shifts in the supply of and demand for skills reinforced by the erosion of labor market institutions affecting the wages of low- and middle-wage workers. Drawing on an additional decade of data, a number of recent contributions reject this consensus to conclude that (1) the rise in wage inequality was an episodic event of the first-half of the 1980s rather than a secular phenomenon, (2) this rise was largely caused by a falling minimum wage rather than by supply and demand factors; and (3) rising residual wage inequality since the mid-1980s is explained by confounding effects of labor force composition rather than true increases in inequality within detailed demographic groups. We reexamine these claims using detailed data from the Current Population Survey and find only limited support. Although the growth of overall inequality in the U.S. slowed in the 1990s, upper tail inequality rose almost as rapidly during the 1990s as during the 1980s. A decomposition applied to the CPS data reveals large and persistent rise in within-group earnings inequality over the past several decades, controlling for changes in labor force composition. While changes in the minimum wage can potentially account for much of the movement in lower tail earnings inequality, strong time series correlations of the evolution of the real minimum wage and upper tail wage inequality raise questions concerning the causal interpretation of such relationships. We also find that changes in the college/high school wage premium appear to be well captured by standard models emphasizing rapid secular growth in the relative demand for skills and fluctuations in the rate of growth of the relative supply of college workers though these models do not accurately predict the slowdown in the growth of the college/high-school gap during the 1990s. We conclude that these patterns are not adequately explained by either a unicausal skill-biased technical change explanation or a revisionist hypothesis focused primarily on minimum wages and mechanical labor force compositional effects. We speculate that these puzzles can be partially reconciled by a modified version of the skill-biased technical change hypothesis that generates a polarization of skill demands.
_____________________________
This information is provided to subscribers, friends, faculty, students and alumni of the School of Industrial & Labor Relations (ILR). It is a service of the Institute for Workplace Studies (IWS) in New York City. Stuart Basefsky is responsible for the selection of the contents which is intended to keep researchers, companies, workers, and governments aware of the latest information related to ILR disciplines as it becomes available for the purposes of research, understanding and debate. The content does not reflect the opinions or positions of Cornell University, the School of Industrial & Labor Relations, or that of Mr. Basefsky and should not be construed as such. The service is unique in that it provides the original source documentation, via links, behind the news and research of the day. Use of the information provided is unrestricted. However, it is requested that users acknowledge that the information was found via the IWS Documented News Service.
Stuart Basefsky
Director, IWS News Bureau
Institute for Workplace Studies
Cornell/ILR School
16 E. 34th Street, 4th Floor
New York, NY 10016
Telephone: (607) 255-2703
Fax: (607) 255-9641
E-mail: smb6@cornell.edu
****************************************
# posted by SBasefsky : 1:53 PM
