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.' "

An Employment Policies Institute study determined that 30.1 percent of affected workers in Arizona fell between the ages of 16 and 19.

"Workers affected by the minimum-wage increase are less likely to be supporting a family than the typical Arizona worker," it stated. "For example, 30.4 percent of the workers are living with their parent or parents, while only 7.6 percent of all Arizona workers are in this category."

John Weischedel, a senior at the East Valley Institute of Technology in Mesa, knows he is lucky to be making $8 per hour at an auto dealership and learning technical skills. So are most of his friends who make $9 or more per hour while still attending high school.

After the minimum-wage law went into effect, "a couple of my friends got laid off - they worked in fast food," he said. "They're going to wait until they're out of high school to find other jobs."