Germany's Moonlighter Economy ; Tough Times Mean Working Second Jobs

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He begins his day early, in slacks and a nice shirt. He ends his day late, in overalls and work boots.

At 5 a.m., Andreas Koschorrek gets ready for his morning job as a client manager for a cleaning service. After a four-hour shift, he makes a one-hour drive to nearby Potsdam, where he pulls on overalls and washes windows. The pay from both jobs totals a little over 1,200 euros (almost $1,500) a month, just enough to pay his rent and child support for his two daughters.

"It's hectic," the trained maintenance worker says of the two- job life he began a few months ago. "Every month, the money has to go to something," he says, adding that people have to work …