The odds of nearly 80% of studies finding negative employment effects (from minimum wage laws) if the true effect is zero is less than one in a million

From Cafe Hayek.

"Writing in the Wall Street Journal, David Neumark – one of the leading researchers on minimum wages – predicts that “raising the minimum wage will definitely cost jobs.” A slice:

To provide an accurate reading of the research, Peter Shirley and I surveyed the authors of nearly all U.S. studies estimating the effects of minimum wages on employment published in the past 30 years. We asked them to report to us their best estimate of the employment effect, measured as the “elasticity,” or the percent change in employment for each 1% change in the minimum wage. Most authors responded, and in the few cases in which they did not, we pulled this estimate from their study.

The results are stark. Across all studies, 79% report that minimum wages reduced employment. In 46% of studies the negative effect was statistically significant. In contrast, only 21% of studies found small positive effects of minimum wages on employment, and in only a minuscule percentage (4%) was the evidence statistically significant. A simplistic but useful calculation shows that the odds of nearly 80% of studies finding negative employment effects if the true effect is zero is less than one in a million."