Extensive research refutes the claim that increasing the minimum wage causes increased unemployment and business closures. (See list below.)
The buying power of the minimum wage reached its peak in 1968 at $10.74, adjusting for inflation in 2013 dollars. The unemployment rate went from 3.8% in 1967 to 3.6% in 1968 to 3.5% in 1969. The next time the unemployment rate came close to those levels was after the minimum wage raises of 1996 and 1997. Business Week observed in 2001, “Many economists have backed away from the argument that minimum wage [laws] lead to fewer jobs.”
Numerous states raised their minimum wages higher than the federal level during the 1997-2007 period the federal minimum wage remained stuck at $5.15. Research by the Fiscal Policy Institute and others showed that states that raised their minimum wages above the federal level experienced better employment and small business trends than states that did not.
A series of rigorous studies by the Institute for Research on Labor and Employment at the University of California, Berkeley, significantly advances the research on minimum wage employment effects. Minimum Wage Effects Across State Borders compared all neighboring counties in the U.S. located on different sides of a state border with different minimum wage levels between 1990 and 2006 and found no adverse employment effects from higher minimum wages.
The Institute for Research on Labor and Employment’s Spacial Heterogeneity and Minimum Wages: Employment Estimates for Teens Using Cross-State Commuting Zones found “no discernable disemployment effect, even when minimum wage increases lead to relatively large wage changes.” Do Minimum Wages Really Reduce Teen Employment? analyzed the 1990-2009 period (an earlier version analyzed 1990-2007). Carefully controlling for more factors than previous minimum wage studies, the researchers found the answer is no.
In a 2013 report, Why Does the Minimum Wage Have No Discernible Effect on Employment?, the Center for Economic and Policy Research spotlights two recent meta-studies analyzing the extensive research conducted since the early 1990s; they conclude that "the minimum wage has little or no discernible effect on the employment prospects of low-wage workers. The most likely reason for this outcome is that the cost shock of the minimum wage is small relative to most firms' overall costs and only modest relative to the wages paid to low-wage workers." The Center report explores varied means of adjustment by employers such as increased worker productivity and diminished wage gap between lower and higher paid employees, noting, "But, probably the most important channel of adjustment is through reductions in labor turnover, which yield significant cost savings to employers."
Selected Research in chronological order
Lawrence F. Katz and Alan B. Krueger, “The Effect of the Minimum Wage on the Fast Food Industry,” Industrial Relations Section, Princeton University, February 1992.
David Card, “Using Regional Variation in Wages to Measure the Effects of the Federal Minimum Wage,” Industrial and Labor Relations Review, October 1992.
David Card and Alan Krueger, Myth and Measurement: The New Economics of the Minimum Wage (Princeton, NJ: Princeton University Press, 1995).
David Card and Alan B. Krueger, “Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania: Reply,” American Economic Review, December 2000 (in this reply, Card and Krueger update earlier findings and refute critics).
Jared Bernstein and John Schmitt, Economic Policy Institute, Making Work Pay: The Impact of the 1996-97 Minimum Wage Increase, 1998.
Jerold Waltman, Allan McBride and Nicole Camhout, “Minimum Wage Increases and the Business Failure Rate,” Journal of Economic Issues, March 1998.
A Report by the National Economic Council, The Minimum Wage: Increasing the Reward for Work, March 2000.
Holly Sklar, Laryssa Mykyta and Susan Wefald, Raise The Floor: Wages and Policies That Work For All Of Us (Boston: South End Press, 2001/2002), Ch. 4 and pp. 102-08.
Marilyn P. Watkins, Economic Opportunity Institute, “Still Working Well: Washington’s Minimum Wage and the Beginnings of Economic Recovery,” January 21, 2004.
Amy Chasanov, Economic Policy Institute, No Longer Getting By: An Increase in the Minimum Wage is Long Overdue, May 2004.
Fiscal Policy Institute, States with Minimum Wages above the Federal Level Have Had Faster Small Business and Retail Job Growth, March 2006 (update of 2004 report).
John Burton and Amy Hanauer, Center for American Progress and Policy Matters Ohio, Good for Business: Small Business Growth and State Minimum Wages, May 2006.
Paul K. Sonn, Citywide Minimum Wage Laws: A New Policy Tool for Local Governments, (originally published by Brennan Center for Justice) National Employment Law Project, May 2006, includes a good summary of impact research.
Liana Fox, Economic Policy Institute, Minimum Wage Trends: Understanding past and contemporary research, November 8, 2006.
Paul Wolfson, Economic Policy Institute, State Minimum Wages: A Policy That Works, November 27, 2006.
Arindrajit Dube, Suresh Naidu and Michael Reich, “The Economic Effects of a Citywide Minimum Wage,” Industrial & Labor Relations Review, July 2007.
Jerold L. Waltman, Minimum Wage Policy in Great Britain and the United States (New York: Algora, 2008), pp. 17-19, 132-136, 151-162, 178-180.
Sylvia Allegretto, Arindrajit Dube and Michael Reich, Do Minimum Wages Really Reduce Teen Employment?, Institute for Research on Labor and Employment, Univ. of CA, Berkeley, June 28, 2008.
Michael F. Thompson, Indiana Business Research Center, “Minimum Wage Impacts on Employment: A Look at Indiana, Illinois and Surrounding Midwestern States,” Indiana Business Review, Fall 2008.
Hristos Doucouliagos and T. D. Stanley, "Publication Selection Bias in Minimum-Wage Research? A Meta-Regression Analysis," British Journal of Industrial Relations, vol. 47, no. 2, 2009.
Sylvia Allegretto, Arindrajit Dube and Michael Reich, Spacial Heterogeneity and Minimum Wages: Employment Estimates for Teens Using Cross-State Commuting Zones, Institute for Research on Labor and Employment, Univ. of CA, Berkeley, June 25, 2009.
Arindrajit Dube, T. William Lester and Michael Reich, Minimum Wage Effects Across State Borders: Estimates Using Contiguous Counties, Institute for Research on Labor and Employment, Univ. of CA, Berkeley, August 2008.
Published by The Review of Economics and Statistics, November 2010.
John Schmitt and David Rosnick, The Wage and Employment Impact of Minimum‐Wage Laws in Three Cities, Center for Economic and Policy Research, March 2011.
Sylvia Allegretto, Arindrajit Dube and Michael Reich, Do Minimum Wages Really Reduce Teen Employment? Accounting for Heterogeneity and Selectivity in State Panel Data, Institute for Research on Labor and Employment, Univ. of CA, Berkeley, June 21, 2010.
Published by Industrial Relations, April 2011.
Anne Thompson, What Is Causing Record-High Teen Unemployment? Range of Economic Factors Drives High Teen Unemployment, But Minimum Wage Not One of Them, National Employment Law Project, October 2011.
John Schmidt, Why Does the Minimum Wage Have No Discernible Effect on Employment?, Center for Economic and Policy Research, Febuary 2013.
More research and links to be added.