In case you don't understand the obvious relationship between the minimum wage and employment, let me learn you some kindergarten-level economic truth:
In July, Illinois raised it's minimum wage to $10 and saw a drop in employment as service-industry and fast-food workers got laid off. In Seattle the wage is already $13 and will soon be $15. They've seen a drastic drop in employment as well.
Whenever the government mandates wage increases, there is a concomitant drop in employment in that sector. Employers have rightly calculated that washing lettuce isn't worth that much, fired their lettuce washers, and assigned that task to somebody else.