The Cargill beef processing plant in Fort Morgan, Colo., advertises openings in early January. Some 150 Muslim workers were fired in late 2015 after a dispute over prayer breaks at the plant. Luke Runyon/KUNC and Harvest Public Media hide caption

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The vast majority of reported cases of norovirus — the leading cause of foodborne disease outbreaks and illnesses across the country — have been linked to infected food industry workers. iStockphoto hide caption

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Bakers pose for a photo at the Greyston Bakery in Yonkers, N.Y. For more than 30 years, the industrial facility has been hiring local residents, including people other businesses might consider unhirable. Courtesy of Greyston hide caption

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Farm workera at Lipman Produce load tomatoes on a truck on Jan. 16, 2014 in Naples, Fla. Wal-Mart Stores Inc. joined an initiative that will require its Florida tomato suppliers to increase farm worker pay and protect workers from forced labor and sexual assault, among other things. Wilfredo Lee/AP hide caption

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Demonstrators from the Fast Food Forward rally protest Thursday outside a Wendy's restaurant in New York City. Mary Altaffer/AP hide caption

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Supporters of American Crystal Sugar Co. workers, who have been locked out of the company's sugar beet processing plants since 2011, rally in the North Dakota Capitol. Dale Wetzel/AP hide caption

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