Tensions are breaking out between employers and workers across the U.S. as some companies push to keep producing during the coronavirus pandemic and some employees push back over health concerns and other issues.

In recent days, plant workers have walked off the job at companies ranging from poultry producer Perdue Farms Inc. to soda maker Refresco B.V. At Tyson Foods Inc., workers petitioned for more paid sick leave. Some want more protective equipment. Others have complained to regulators about unsafe conditions.

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