I assume they're all comparable in the relevant attribute which is: if you make labor more expensive, employers will tend to consume less labor. Do you have some reason to think they're not comparable in that way? Do we need to find evidence of a general economic principle in EVERY locality for you to accept that it is, in fact, a general economic principle? Or is it sufficient that we have a strong intuitive argument and hundreds of studies showing it in action in various places and times? (And if you think the difference is "monopsony" as per Card/Kruger, how do you answer Boudreaux's questions I linked above?)
In the US, here's a plot of the correspondence between the teenage unemployment rate and recent large minimum wage rate hikes:
Quote: "Each 10% increase in the minimum wage [since 2007] was accompanied by a decrease in employment of 1.2% for Hispanic males, 2.5% for white males and 6.5% for black males. When looking at hours worked, we saw a similar effect: Each 10% increase in the minimum wage reduced hours worked by 1.7% for Hispanic males, 3% for white males and 6.6% for black males.
The data clearly show a disproportionate loss of hours and employment for black young adults. Let's put these lost opportunities into context. Between 2007 and 2010, employment for 16- to 24-year-old black males fell by approximately 34,300 as a result of the recession; over the same time period, approximately 26,400 lost their jobs as a result of increases in the minimum wage across the 50 states and at the federal level." (source: http://mjperry.blogspot.com/2011/07/second-recession-from-mi... )
In the US, here's a plot of the correspondence between the teenage unemployment rate and recent large minimum wage rate hikes:
http://www.coyoteblog.com/wp-content/uploads/2012/01/minwage...
Quote: "Each 10% increase in the minimum wage [since 2007] was accompanied by a decrease in employment of 1.2% for Hispanic males, 2.5% for white males and 6.5% for black males. When looking at hours worked, we saw a similar effect: Each 10% increase in the minimum wage reduced hours worked by 1.7% for Hispanic males, 3% for white males and 6.6% for black males.
The data clearly show a disproportionate loss of hours and employment for black young adults. Let's put these lost opportunities into context. Between 2007 and 2010, employment for 16- to 24-year-old black males fell by approximately 34,300 as a result of the recession; over the same time period, approximately 26,400 lost their jobs as a result of increases in the minimum wage across the 50 states and at the federal level." (source: http://mjperry.blogspot.com/2011/07/second-recession-from-mi... )