The Curse of Econ 101
When it comes to basic policy questions such as the minimum wage, introductory economics can be more misleading than it is helpful.
The argument against increasing the minimum wage often relies on what I call “economism”—the misleading application of basic lessons from Economics 101 to real-world problems, creating the illusion of consensus and reducing a complex topic to a simple, open-and-shut case.
The real impact of the minimum wage, however, is much less clear than these talking points might indicate.
Looking at historical experience, there is no obvious relationship between the minimum wage and unemployment: adjusted for inflation,
the federal minimum was highest from 1967 through 1969, when the unemployment rate was below 4 percent—a historically low level. When economists try to tackle this question, they come up with all sorts of results. In 1994, David Card and Alan Krueger
evaluated an increase in New Jersey’s minimum wage by comparing fast-food restaurants on both sides of the New Jersey-Pennsylvania border. They concluded, “Contrary to the central prediction of the textbook model ... we find no evidence that the rise in New Jersey’s minimum wage reduced employment at fast-food restaurants in the state.”
Card and Krueger’s findings have been vigorously contested across dozens of empirical studies. Today, people on both sides of the debate can cite papers supporting their position, and reviews of the academic research disagree on what conclusions to draw. David Neumark and William Wascher, economists who have long argued against the minimum wage,
reviewed more than one hundred empirical papers in 2006. Although the studies had a wide range of results, they concluded that the “preponderance of the evidence” indicated that a higher minimum wage does increase unemployment. On the other hand, two
recent meta-studies (which pool together the results of multiple analyses) have found that increasing the minimum wage does not have a significant impact on employment. In the past several years,
a new round of sophisticated analyses comparing changes in employment levels between neighboring counties also found “strong earnings effects and no employment effects of minimum wage increases.” (That is, the number of jobs stays the same and workers make more money.) Not surprisingly, Neumark and Wascher have contested this approach. The profession as a whole is divided on the topic: When the University of Chicago Booth School of Business
asked a panel of prominent economists in 2013 whether increasing the minimum wage to $9 would “make it noticeably harder for low-skilled workers to find employment,” the responses were split down the middle.
The idea that a higher minimum wage might not increase unemployment runs directly counter to the lessons of Economics 101. According to the textbook, if labor becomes more expensive, companies buy less of it. But there are several reasons why the real world does not behave so predictably. Although the standard model predicts that employers will replace workers with machines if wages increase, additional labor-saving technologies are not available to every company at a reasonable cost. Small employers in particular have limited flexibility; at their scale, they may not be able to maintain their operations with fewer workers. (Imagine a local copy shop: No matter how fast the copy machine is, there still needs to be one person to deal with customers.) Therefore, some companies can’t lay off employees if the minimum wage is increased. At the other extreme, very large employers may have enough market power that the usual supply-and-demand model doesn’t apply to them. They can reduce the wage level by hiring fewer workers (only those willing to work for low pay), just as a monopolist can boost prices by cutting production (think of an oil cartel, for example). A minimum wage forces them to pay more, which eliminates the incentive to minimize their workforce.
A higher minimum wage motivates more people to enter the labor force, raising both employment and output. Finally, higher pay increases workers’ buying power. Because poor people spend a relatively large proportion of their income, a higher minimum wage can boost overall economic activity and stimulate economic growth, creating more jobs.
All of these factors vastly complicate the two-dimensional diagram taught in Economics 101 and help explain why a higher minimum wage does not necessarily throw people out of work. The supply-and-demand diagram is a good conceptual starting point for thinking about the minimum wage. But on its own, it has limited predictive value in the much more complex real world.
https://www.theatlantic.com/business/archive/2017/01/economism-and-the-minimum-wage/513155/