From the Wall Street Journal:  
Earlier this year, economist David Neumark of the University of California, Irvine, wrote on these pages that the 70-cent-an-hour increase in the minimum wage would cost some 300,000 jobs. Sure enough, the mandated increase to $7.25 took effect in July, and right on cue the August and September jobless numbers confirm the rapid disappearance of jobs for teenagers.  
 
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