Experts cautioned that the effects of the minimum wage may vary according to the industries dominant in the cities where they are implemented along with overall economic conditions in the country as a whole.
And critics of the research pointed out what they saw as serious shortcomings. In particular, to avoid confusing establishments that were subject to the minimum with those that were not, the authors did not include large employers with locations both inside and outside of Seattle in their calculations. Skeptics argued that omission could explain the unusual results. […]
Economists have long argued that increasing the minimum wage will force some employers to let workers go. In 1994, however, economists David Card and Alan Krueger published research on minimum wages in Pennsylvania and New Jersey that contradicted this theory […]
Since then, economists have brought better data and more sophisticated statistical methods to bear on the question of the minimum wage, but without resolving the debate. […]
When the authors of the study took the same approach as Card and Krueger, measuring overall employment in the restaurant industry, they found similar results. The minimum wage did not substantially affect how many people were working in the industry or how many hours they were working. […]
[UW study co-author] Vigdor said that restaurateurs in Seattle – along with other employers – responded to the minimum wage by hiring more skilled and experienced workers, who might be able to produce more revenue for their firms in the same amount of time. […] “Basically, what we’re doing is we’re removing the bottom rung of the ladder,” Vigdor said.
There could be another explanation for the results, however: the fact that large employers are not included. […]
“I think they [the UW study authors] underestimate hugely the wage gains, and they overestimate hugely the employment loss,” said Michael Reich, an economist at the University of California, Berkeley who was part of a group that published its own study of the minimum wage in Seattle last week. […]
Their results from the University of California accorded with past research. The minimum wage increased wages for workers in the restaurant industry, without reducing employment overall – in contrast to the findings from the University of Washington. […]
One way of explaining the disagreement could be that small businesses in Seattle have been forced to downsize in response to the increased minimum wage, while larger firms have expanded. […]
There’s another explanation for the growth in high-paid jobs and the decrease in lower-paid ones. The authors of the study argue that that’s occurring because employers are focusing on high-paid workers and leaving low-paid workers out, but it’s possible that something far more positive is happening.
Seattle’s economy is booming, and in a booming economy, more workers are likely to get raises or find jobs that pay better, and it may be that phenomenon – of workers getting raises, promotions or better paying jobs – that explains the shifts in the labor market the researchers see in Seattle. […]
Vigdor agreed that the effects of increasing the minimum wage could differ by time and place.
“The effect of the minimum wage depends on a lot of things. It depends on where you’re starting from. It depends on what kind of economy you’re raising it in,” Vigdor said. "There is no one ‘the effect of the minimum wage.’ "