See, for example, this: http://www.epi.org/publication/the-high-road-seattle-labor-market-and-the-effects-of-the-minimum-wage-increase-data-limitations-and-meth

See, for example, this: http://www.epi.org/publication/the-high-road-seattle-labor-market-and-the-effects-of-the-minimum-wage-increase-data-limitations-and-methodological-problems-bias-new-analysis-of-seattles-minimum-wage-incr/ http://www.epi.org/publication/the-high-road-seattle-labor-m...