Minimum Wages and Employment: A Review of Evidence from the New Minimum Wage Research
This source establishes that minimum wage increases almost never have positive increases on employment, as often times, it turns out to be a reason to cut off on employment and man-power.[1]
[1] Minimum Wages and Employment: A Review of Evidence from the New Minimum Wage ResearchArticle
NBER · 6 Nov 2006
Passage from the sourceTwo other important conclusions emerge from our review. First, we see very few - if any - studies that provide convincing evidence of positive employment effects of minimum wages, especially from those studies that focus on the broader groups (rather than a narrow industry) for which the competitive model predicts disemployment effects. Second, the studies that focus on the least-skilled groups provide relatively overwhelming evidence of stronger disemployment effects for these groups.
The study relates directly to the claim. Clicking on the link gives a 150-page study downloadable in PDF format. It gives extensive insight on the subject and method of the study, as well as the results. The relation between this claim and this evidence piece is direct.