Part of the gains in the U.S. job market last month came in health care, the Bureau of Labor Statistics says. Here, a nurse screens a patient in Emporia, Va. Paul J. Richards/AFP/Getty Images hide caption

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Paul J. Richards/AFP/Getty Images

Both the national unemployment rate, at 4.4 percent, and the number of unemployed people, at 7.1 million, saw only incremental changes in April. Bureau of Labor Statistics via St. Louis Fed/NPR hide caption

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Bureau of Labor Statistics via St. Louis Fed/NPR

Job seekers look over forms while attending the first Los Angeles International Airport Job Fair for Veterans in Los Angeles on Sept. 14. Frederic J. Brown/AFP/Getty Images hide caption

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Frederic J. Brown/AFP/Getty Images

Job seekers wait to speak with representatives during a Choice Career Fair this summer in Los Angeles. Patrick T. Fallon/Bloomberg via Getty Images hide caption

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Patrick T. Fallon/Bloomberg via Getty Images

A Job News USA employee directs job seekers to a career fair at Papa John's Cardinal Stadium in Louisville, Ky., on May 18. New figures from the Bureau of Labor Statistics show that the number of workers who would like to work full-time but can find only part-time work increased by nearly half a million last month. Luke Sharrett/Bloomberg via Getty Images hide caption

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Luke Sharrett/Bloomberg via Getty Images

A customer pays for goods while shopping at the Atlanta Farmers Market in Atlanta. Average hourly earnings fell by 3 cents last month, according to the latest Bureau of Labor Statistics report. David Goldman/AP hide caption

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David Goldman/AP