Economics 101 is a course which uses entirely artificial formulas, etc., to introduce beginning students to basic concepts. If one were to limit oneself to such a rudimentary "understanding" of economics, one might well conclude that the issue -- whether raising the minimum wage increases unemployment among those earning the minimum wage -- could be resolved with a pencil, a straightedge, and two lines on a piece of graph paper.dgs49 wrote:ECON 101.
Actual economists, however, study the world which actually exists.
As stated in the opening posting, the Council of Economic Advisors found in 1999 that "the weight of the evidence suggests that modest increases in the minimum wage have had very little or no effect on employment." In itself, that is more than enough to overwhelm completely the notional conclusions simplistically derived from a less-than-sophomoric grasp of economic realities.
But just last month, the Council for Economic and Policy Research issued a major report on precisely the issue which confronts us. It concludes that "the minimum wage has little or no discernible effect on the employment prospects of low-wage workers."
That is not the conclusion merely of a single study. On the contrary:
The entire report is well worth reading. Here are four salient excerpts.This report examines the most recent wave of this research – roughly since 2000 – to determine the best current estimates of the impact of increases in the minimum wage on the employment prospects of low-wage workers. The weight of that evidence points to little or no employment response to modest increases in the minimum wage.
First, the status of minimum-wage research in the 1970s:
Second, developments in minimum-wage research in the 1990s:In 1977, the Minimum Wage Study Commission (MWSC) undertook a review of the existing research on the minimum wage in the United States (and Canada), with a particular focus on the likely impact of indexing the minimum wage to inflation and providing a separate, lower, minimum for younger workers. ... Their summary of the theoretical and empirical research through the late 1970s suggested that any "disemployment" effects of the minimum wage were small and almost exclusively limited to teenagers and possibly other younger workers.
For a decade, the MWSC's conclusions remained the dominant view in the economics profession.
Third, two meta-studies done in the late 2000s:By the early 1990s, however, several researchers had begun to take a fresh look at the minimum wage. The principal innovations of what came to be known as "the new minimum wage research" were the use of "natural experiments" and cross-state variation in the "bite" of the minimum wage.
Natural experiments sought to reproduce in the real world some of the features of a laboratory experiment. ...
Without a doubt, the most influential of the studies using a natural experiment was David Card and Alan Krueger's (1994) paper on the impact on fast-food employment of the 1992 increase in the New Jersey state minimum wage. Card and Krueger ... found "no evidence that the rise in New Jersey's minimum wage reduced employment at fast-food restaurants in the state."
The "New Minimum Wage" research also emphasized research methods based on important differences in the "bite" of the federal minimum across the states. Any given increase in the federal minimum, the thinking went, should have more impact in low-wage states, where many workers would be eligible for an increase, than it would in high-wage states, where a smaller share of the workforce would be affected. Card ... concluded: "Comparisons of grouped and individual state data confirm that the rise in the minimum wage raised average teenage wages... On the other hand, there is no evidence that the rise in the minimum wage significantly lowered teenage employment rates..."
Meta-studies are “studies of studies” that use a set of well-defined statistical techniques to pool the results of a large number of separate analyses. Meta-study techniques effectively increase the amount of data available for analysis and can provide a much sharper picture of statistical relationships than is possible in any individual study. ...
Hristos Doucouliagos and T. D. Stanley (2009) conducted a meta-study of 64 minimum-wage studies published between 1972 and 2007 measuring the impact of minimum wages on teenage employment in the United States. ... Doucouliagos and Stanley concluded that their results “...corroborate [Card and Krueger's] overall finding of an insignificant employment effect (both practically and statistically) from minimum-wage raises.”
Fourth, four of "the most important studies conducted over the last decade":Paul Wolfson and Dale Belman have carried out their own meta-analysis of the minimum wage, focusing on studies published only since 2000. They identified 27 minimum wage studies that produced the necessary elasticity estimates and corresponding standard errors, yielding 201 employment estimates in total. They then produced a range of meta-estimates, controlling for many features of the underlying studies, including the type of worker analyzed (teens or fast food workers), whether the study focused on the supply or the demand side of the labor market, who the authors of the study were, and other characteristics. The resulting estimates varied, but revealed no statistically significant negative employment effects of the minimum wage ....
Probably the most important and influential paper written on the minimum wage in the last decade was Dube, Lester, and Reich (2010)'s study ....* * *... Dube, Lester and Reich (2010) essentially replicated Card and Krueger's New Jersey-Pennsylvania experiment thousands of times, by comparing employment differences across contiguous U.S. counties with different levels of the minimum wage. ...
Their methodology effectively generalizes the Card and Krueger New Jersey-Pennsylvania study, but with several advantages. First, the much larger number of cases allowed Dube, Lester, and Reich to look at a much larger distribution of employment outcomes than was possible in the single case of the 1992 increase in the New Jersey minimum wage. Second, since they followed counties over a 16-year period, the researchers were also able to test for the possibility of longer-term effects. Finally, because the relative minimum wage varied across counties over time, the minimum wage in a particular county could, at different points in time, be lower, identical to, and higher than the minimum wage in its pair, providing substantially more experimental variation than in the New Jersey-Pennsylvania (and many similar) studies. Using this large sample of border counties, and these statistical advantages over earlier research, Dube, Lester, and Reich "...find strong earnings effects and no employment effects of minimum wage increases."
Independently of Dube, Lester, and Reich, economists John Addison, McKinley Blackburn, and Chad Cotti used similar county level data for the restaurant-and-bar sector to arrive at similar conclusions. Addison, Blackburn, and Cotti found no net employment effect of the minimum wage in the restaurant-and-bar sector. More importantly, using reasoning similar to Dube, Lester, and Reich, they also concluded that the standard state panel-data techniques that have typically yielded negative employment effects of the minimum wage appear to be biased toward finding that result ....
Sylvia Allegretto, Dube, and Reich (2011) ... included data covering the deep recession that ran from December 2007 through June 2009, allowing them to measure any possible interactions between the minimum wage and strong economic downturns.
... [O]nce they controlled for different regional trends, the estimated employment effects of the minimum wage disappeared, turning slightly positive, but not statistically significantly different from zero.
Allegretto, Dube, and Reich also investigated whether the impact of the minimum wage is greater in economic downturns. They "...do not find evidence that the effects are systematically different in periods of high versus low overall unemployment."
Is there research to the contrary? Of course.Barry Hirsch, Bruce Kaufman, and Tatyana Zelenska (2011) studied the impact of the 2007-2009 increases in the federal minimum wage on a sample of 81 fast-food restaurants in Georgia and Alabama. ...
Hirsch, Kaufman, and Zelenska gathered ... electronic payroll data obtained from the three owners of the 81 establishments. The data covered a three-year period from January 2007 through December 2009, which brackets the July 2007, July 2008, and July 2009 increases in the federal minimum wage. These data allowed the researchers to conduct before-and-after tests of changes in wages and employment at the restaurants. If the minimum wage had a negative effect on employment, they would expect to observe larger increases in wages at the lower-wage restaurants, accompanied by bigger declines in employment. In fact, they found: "...in line with other recent studies, that the measured employment impact is variable across establishments, but overall not statistically distinguishable from zero. The same absence of a significant negative effect is found for employee hours, even when examined over a three-year period."
But that is the value both of reports such as this one and of meta-studies: They tell us what the weight of the evidence is. As of 1999, "the weight of the evidence suggest[ed] that modest increases in the minimum wage have had very little or no effect on employment." And as of 2013, “[t]he weight of th[e] evidence points to little or no employment response to modest increases in the minimum wage.”
On one hand, there is the weight of the evidence. On the other hand, there is a simplistic notion derived from an introductory course in economics. Readers will have to draw their own conclusions.
