FILE PHOTO: Protest signs are pictured in SeaTac, Washington just before a march from SeaTac to Seattle aimed at the fast ...

Column: New study says the minimum wage hike in Seattle is bad for low-wage workers

Editor’s note: An economic working paper on the effects of a substantial minimum wage hike, such as the recent one in Seattle, commissioned by the city itself, is causing quite a stir in economic circles, both pro and con. The study finds that the minimum wage boost, now up to $13 an hour for large employers in Seattle, has cost jobs for the city’s lowest-wage workers. Though I’ve been warned against reading too much into an academic working paper that hasn’t even been peer reviewed yet, this one is getting enough publicity to warrant attention here at Making Sen$e. We’ve covered the topic extensively, particularly in Seattle, from a 1996 interview with Princeton professor and Obama economic adviser Alan Krueger to the series from Seattle in 2013 when a minimum wage hike first appeared on the ballot there.

Of course, at some level, a higher “minimum wage” will inevitably mean fewer low-skill jobs. Imagine a $100 minimum wage, for example. Employers would replace workers with machinery anywhere and everywhere or simply go out of business. Longtime wage hike advocate Alan Krueger himself has wondered in print if a minimum wage of more than $12 might not be too high. So the real question is: Just how high can the minimum wage be raised before it becomes counterproductive?

We’re presenting two views of the controversial new study here on our Making Sen$e page. The first is from economist Jonathan Meer, associate professor of economics at Texas A&M University, who has done earlier work claiming the minimum wage hurts low-wage workers. A version of his comments ran in the conservative National Review. You can read venture capitalist and minimum wage advocate Nick Hanauer’s defense of Seattle’s minimum wage hike here.

— Paul Solman, economics correspondent

Policymakers looking for ways to help low-income households have turned to minimum-wage increases in recent years. But a provocative new paper by the Seattle Minimum Wage Study Team at the University of Washington suggests that this may be a deeply counterproductive policy. This study was immediately met with skepticism from pro-minimum-wage activists and several major media outlets, but it is important to understand why this paper is different and worthy of attention.

The authors of the study are an official team commissioned several years ago by the city of Seattle to study the impacts of raising the minimum wage, in a move that I applauded at the time as an honest and transparent attempt at self-examination. The team includes researchers from a broad spectrum of political backgrounds, and its paper is one of the first studies of a very large, city-level minimum-wage increase. The researchers had unprecedented access to detailed administrative data. They compare wage levels, job counts and hours worked between the city of Seattle and a “synthetic control,” composed of other parts of the state whose economies had been tracking Seattle’s reasonably well prior to the policy change. To simplify somewhat, the idea is that the two would have evolved similarly if the policy had never been introduced and that differences following the minimum-wage increases can be attributed to that policy.

The importance of having a control group is seen in the occasional assertion that because Washington state’s economy – and Seattle’s economy in particular – has been doing very well over the past few years, high minimum wages cannot be having an effect. But there are myriad factors that impact growth. The tricky question facing economists is to determine what the economy would have done in the absence of the policy. Simple comparisons of the same location over time are uninformative.

The group’s first study last year (of the policy’s first phase, increasing the minimum to $11 an hour) was a mixed bag, with fairly imprecise estimates. But the new findings, adding another year of data and including a second increase to $13 an hour, are unequivocal: The policy has caused serious damage to low-wage workers in Seattle. The number of hours worked by low-wage workers fell by a staggering 3.5 million per quarter. This is reflected both in thousands of job losses (or, more precisely, in jobs that would have been created but never were) and in reductions in hours worked by those who retained their jobs. These effects were so dramatic that total payroll accruing to low-wage workers fell by about $120 million per year, with workers actually losing $125 per month on average.

These estimates suggest that businesses respond to minimum-wage hikes much more strongly than previous research implied, which may have been expected given how much higher (and how localized) this minimum wage is relative to previously studied wage hikes. The impact also took some time to be reflected in the labor market, as predicted by several recent papers examining minimum-wage increases in other contexts.

This paper makes numerous valuable contributions to the economics literature and should give serious pause to minimum-wage advocates and policymakers. Of course, that’s not what’s happening. The mayor of Seattle went as far as to commission another study, by a team at Berkeley whose findings on the minimum wage are so consistently one-sided that you can set your watch by them. Unsurprisingly, this study finds no effect of the policy, and its release was deliberately timed for several days before the University of Washington paper came out in order to muddy the waters. It appears that many journalists have obligingly played along, focusing on the caveats already included by the University of Washington team and unquestioningly reporting others’ criticisms, including those from the union-funded Economic Policy Institute, which attacks the University of Washington team’s paper on very shaky grounds.

READ MORE: Column: Why a $15 minimum wage should scare us

READ MORE: Column: Why a $15 minimum wage shouldn’t scare us

Hand in hand with this is the assertion in many articles that the economics literature has converged on a consensus that the minimum wage does not affect employment. This is completely and utterly false. There are many papers, in top economics journals by respected researchers, showing negative impacts of the minimum wage on employment — including my own work with Jeremy West of the University of California at Santa Cruz, which showed that higher minimum wages slow job growth. This is an ongoing academic debate and is far from a settled issue.

Many of the criticisms of the University of Washington study suggest a highly selective read of the minimum-wage literature, but they are worth addressing in detail. The first is that the results are somehow “too big” and inconsistent with prior research. Minimum-wage advocates would argue that any negative finding is “too big” and reflects errors in the research — an unscientific argument that borders on the tautological. But there are good reasons why the impacts are so large. This is by far the highest minimum wage that has ever been examined, and the wage increase occurred only in a single city. A bigger increase causes a bigger employment effect.

The other papers that found no changes in employment were limited to the restaurant industry and to analyzing raw employment levels, pooling workers of all pay and skill levels. When the University of Washington researchers limited their study to restaurant workers and used the same estimation techniques, they found similar results. Thus, those other papers’ findings were likely driven by their data limitations: the lack of data on hours worked, the focus on a single industry and an inability to separate out at employment effects by wage level.

The University of Washington study’s primary limitation is that it excluded many employers with multiple establishments, because such employers might have some locations in Seattle and some elsewhere in the state. This is the sort of tricky decision that economists have to make all the time. However, the University of Washington researchers conducted extensive surveys showing that multi-site employers in Seattle were more likely to report job reductions than the single-site establishments. To believe that the exclusion of multi-employer establishments negates the results, one would have to believe that multi-site employers somehow massively expanded their operations in response to the higher minimum wage, enough to make up for reductions and slowdowns elsewhere — and yet reported in a survey, en masse, that they had cut staffing.

The study also found an increase in work at jobs that pay more than $19 an hour, and some critics have pointed to this as evidence that something about the research design is off. This argument falls apart under scrutiny. First, “labor-labor substitution” is an obvious way for employers to adapt: For example, a store hires fewer low-wage clerks and the assistant manager puts in more hours to make up for it. Second, and more importantly, the University of Washington team’s results hold under a wide range of definitions of low wages, including those higher than $19 an hour. This is strongly suggestive that the increase in the prevalence of these high-wage jobs is unrelated to the minimum-wage policy and simply reflects Seattle’s tech boom. And in future work, the University of Washington team will investigate which industries are affected most, which will shed more light on this question.

Mayor Ed Murray (C) addresses the crowd during a rally at City Hall after a Seattle City Council meeting in which the council voted on raising the minimum wage to $15 per hour in Seattle, Washington June 2, 2014. The Seattle city council voted unanimously on Monday to approve a sharp increase in the city's minimum wage to $15 an hour over the next seven years, marking the first time a major U.S. city has committed to such a high base level of pay. REUTERS/David Ryder (UNITED STATES - Tags: BUSINESS EMPLOYMENT) - RTR3RWZL

Mayor Ed Murray addresses the crowd during a rally at City Hall after a Seattle City Council voted to raise the minimum wage to $15 per hour in Seattle, Washington on June 2, 2014. The authors of the study are an official team commissioned by the city of Seattle to study the impacts of raising the minimum wage. Photo by David Ryder/Reuters

The Economic Policy Institute and others then claim that the results are overstated because Seattle has been booming. This is exactly backward: If Seattle is growing faster than expected, then the counterfactual comparison group is not keeping up as well at it should be, understating the extent of the job losses. It also seems strange to claim that low-wage work will do worse in good economic times, when the recent evidence of the Great Recession shows the opposite. More to the point, recent research shows that the negative impacts of the minimum wage are higher during economic downturns, not boom times. There is no cherry picking here.

These job losses will only get worse as the minimum wage climbs and the effects fully phase in. The University of Washington team is working on linking the workers in its data set to demographic data from other sources to examine the characteristics of the losers from this policy. Most likely, the losses are borne most heavily by low-income and minority households, high-school dropouts, those with criminal records and others who are already most vulnerable — that is, those whom an employer is least likely to hire at $15 an hour.

I have conducted economics research on the minimum wage, though most of my work is on non-controversial topics like charitable giving, and I’ve been surprised how politicized the topic is even among academics. I don’t envy the backlash this team is facing for presenting results that are seen as heresy.

Of course, one paper, even a careful, well-documented one with superior data that’s written by a respected and apolitical group, does not fully establish the result. But critics who refuse to even consider that this policy may be hurting those it’s intended to help should take a step back and focus on the real question: How can policy best help low-income households? As a transfer program, this experiment has failed miserably. It destroyed $3 worth of employment opportunities for every dollar that actually went to a low-wage worker. A genuine concern for the poor and working class is not well served by shouting slogans and ignoring real evidence.

If your immediate reaction to this study was to dismiss it, it is time to admit that your views cannot be swayed by science. They might as well be religion.