Sweating behind a lawnmower and bagging groceries taught Nashville, Tenn., business leaders that hard work is needed to get ahead, they say. "That first job taught me that you can earn a paycheck for your work, but the paycheck becomes less important than the sense of satisfaction you get when you're fully engaged," said Allison Burgess Duke, an assistant professor of management and a human resources specialist at Lipscomb University.

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