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NJ and PA Once Again: What Happened to Employment When the PA-NJ Minimum Wage Differential Disappeared?

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  • Saul D. Hoffman

    (Department of Economics,University of Delaware)

  • Diane Trace

    (Department of Economics, University of Delaware)

Abstract

Card and Krueger's analysis of the impact of the 1992 increase in the NJ state minimum wage is very well known and still controversial. Interestingly, the original NJ-PA natural experiment was followed by another one involving the same two states, an experiment that has not yet been noted or examined. In 1996 and 1997, the federal minimum wage was increased in two steps, from $4.25 to $5.15, thereby increasing the minimum wage by $0.90 in PA but by just $0.10 in NJ. We use CPS data from 1995 and 1998 to examine the impacts on employment, using difference-in-difference and difference-in-difference-in-difference estimators that exploit within- state and between-state comparisons. We find consistent evidence that employment of “at-risk” groups was negatively impacted in PA relative to other groups in PA and to comparable groups in NJ.

Suggested Citation

  • Saul D. Hoffman & Diane Trace, 2007. "NJ and PA Once Again: What Happened to Employment When the PA-NJ Minimum Wage Differential Disappeared?," Working Papers 07-08, University of Delaware, Department of Economics.
    • Handle: RePEc:dlw:wpaper:07-08.
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    File URL: http://graduate.lerner.udel.edu/sites/default/files/ECON/PDFs/RePEc/dlw/WorkingPapers/2007/UDWP2007-08.pdf
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    References listed on IDEAS

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    1. David Card, 1992. "Using Regional Variation in Wages to Measure the Effects of the Federal Minimum Wage," ILR Review, Cornell University, ILR School, vol. 46(1), pages 22-37, October.
    2. Alan B. Krueger & David Card, 2000. "Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania: Reply," American Economic Review, American Economic Association, vol. 90(5), pages 1397-1420, December.
    3. William Wascher & David Neumark, 2000. "Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania: Comment," American Economic Review, American Economic Association, vol. 90(5), pages 1362-1396, December.
    4. Deere, Donald & Murphy, Kevin M & Welch, Finis, 1995. "Employment and the 1990-1991 Minimum-Wage Hike," American Economic Review, American Economic Association, vol. 85(2), pages 232-237, May.
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    Cited by:

    1. Saul D. Hoffman & Chenglong Ke, 2010. "Employment Effects of the 2009 Minimum Wage Increase: Evidence from State Comparisons of At-Risk Workers," Working Papers 10-07, University of Delaware, Department of Economics.
    2. Saul D. Hoffman & Chenglong Ke, 2011. "Employment Effects of the 2009 Minimum Wage Increase: Evidence from State Comparisons of At-Risk Workers (Revised Version)," Working Papers 11-16, University of Delaware, Department of Economics.

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    More about this item

    Keywords

    Minimum Wage; Card-Krueger;

    JEL classification:

    • J01 - Labor and Demographic Economics - - General - - - Labor Economics: General
    • J08 - Labor and Demographic Economics - - General - - - Labor Economics Policies
    • J78 - Labor and Demographic Economics - - Labor Discrimination - - - Public Policy (including comparable worth)

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