To comply with the ruling and obtain a license, Ms. Granatelli would have to spend about $250,000 over four years at an accredited school. Over the years, states across the country have added licensing requirements for a bewildering variety of jobs, requiring months or years of expensive education, along with assessing costly fees. Today, nearly 30% of the American work force needs a license to work, up from about 10% in the 1970s, according to Professor Kleiner, who has studied the issue.
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