Labor

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FILE - In this Feb. 28, 2013 file photo, Illinois Department of Natural Resources Director Marc Miller is seen at the state Capitol in Springfield, Ill. The DNR has hired just four of the 53 new employees it says it needs to oversee the state’s much praised compromise on regulating hydraulic fracturing. The agency has come under increasing criticism from “fracking” supporters who had hoped that high-volume oil and gas drilling could begin this summer. Miller says the agency is working on filling the jobs and still will meet a Nov. 15 legal deadline to have the rules in place. He says 23 jobs are posted, and the agency should have 15 people on board by the end of July. (AP Photo/Seth Perlman, File)

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Workers clean the stairs at Arena Corinthians in Sao Paulo. Brazil faces a shortage of up to 8.5 million workers in 2020 if it hopes to maintain current growth rates, according to a report from the Boston Consulting Group. The United States is forecast to have a surplus of up to 22 million workers in 2020. (Associated Press)

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President Barack Obama stands next to a painting of "Uncle Sam," during a visit with workers at 1776, a hub for tech startups, Thursday, July 3, 2014, in Washington. The president said job growth in June shows the recovery is taking hold, but the economy could still do better, he also urged Congress to work with him to help create more jobs. (AP Photo/Jacquelyn Martin)

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In this May 19, 2005, file photo, construction workers work on part of the Johns Hopkins Hospital in Baltimore. (AP Photo/Chris Gardner, File) ** FILE **

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Mathew Brady is renown for taking photos of Union generals and soldiers, like this one of Col. Elmer Ellsworth. His exhibit will be on display through May 31. (National Portrait Gallery/Smithsonian Institution)