Yup, that's a downward slope...

On the demand curve for unskilled labor in Arizona:

Oh, for the days when Arizona's high school students could roll pizza dough, sweep up sticky floors in theaters or scoop ice cream without worrying about ballot initiatives affecting their earning power.

That's certainly not the case under the state's new minimum-wage law that went into effect last month. Some Valley employers, especially those in the food industry, say payroll budgets have risen so much that they're cutting hours, instituting hiring freezes and laying off employees.

....Mark Messner, owner of Pepi's Pizza in south Phoenix, estimates he has employed more than 2,000 high school students since 1990. But he plans to lay off three teenage workers and decrease hours worked by others. Of his 25-person workforce, roughly 75 percent are in high school.

"I've had to go to some of my kids and say, 'Look, my payroll just increased 13 percent,' " he said. " 'Sorry, I don't have any hours for you.' "

Messner's monthly cost to train an employee has jumped from $440 to $580 as the turnover rate remains high. "We go to great lengths to hang on to our high school workers, but there are a lot of kids who come in and get one check in their pocket and feel like they're living large and out the door they go," he said. "We never get our return on investment when that happens."