Displacement, Asymmetric Information, and Heterogeneous Human Capital
Upjohn Institute Working Paper 07-136
Luojia Hu
Christopher Taber
Department of Economics and Institute for Policy Research
Northwestern University
June 22, 2007
JEL Classification Codes: J6, J7
Abstract
In a seminal paper, Gibbons and Katz (1991) develop and empirically test an asymmetric
information model of the labor market. The model predicts that wage losses following displacement
should be larger for layoffs than for plant closings, which was borne out by data from the Displaced
Workers Survey (DWS). In this paper, we take advantage of many more years of DWS data to examine
how the difference in wage losses across plant closings and layoffs varies with race and gender. We find
that the differences between white males and the other groups are striking and complex. The “lemons
effect” of layoffs holds for white males, as in the Gibbons-Katz model, but not for the other three
demographic groups (white females, black females, and black males). These three all experience a greater
decline in earnings at plant closings than at layoffs. This results from two reinforcing effects. First, plant
closings have substantially more negative effects on minorities than on whites. Second, layoffs seem to
have more negative consequences for white men than the other groups. These findings suggest that the
Gibbons-Katz asymmetric information model is not sufficient to explain all of the data. We augment the
model with heterogeneous human capital and show that this model can explain the findings. We also
provide some additional evidence suggestive that both asymmetric information and heterogeneous human
capital are important. In support of both explanations, we demonstrate that the racial and gender effects
are surprisingly robust to region, industry, and occupation controls. To look at the asymmetric
information, we make use of the Civil Rights Act of 1991, which induced employers to lay off
“protected” workers in mass layoffs rather than fire them for cause. As a result, relative to whites, a layoff
would be a more negative signal for blacks after 1991 than before. If information is important, this would
in turn imply that blacks experience a relatively larger loss in earnings at layoffs after 1991 than prior;
and that’s what we find in the data. In addition, as further evidence for heterogeneous human capital, we
document for the first time in the literature that the two types of layoffs reported in the DWS data, namely
layoffs due to “slack work” and “position abolished,” have very different features when compared to plant
closings. Finally, we simulate our model and show that it can match the data.
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