Last year, the United States Court of Appeals for the 11th Circuit ruled that there were no racial overtones when a white manager at a Tyson chicken plant in Gadsden, Ala., called adult black men working there “boy.”

“The usages were conversational” and “nonracial in context,” the majority wrote in a 2-to-1 decision that overturned a jury verdict of about $1.4 million in an employment discrimination case brought by a black Tyson employee, John Hithon...

On Dec. 16, more than a year after the initial decision, the appeals court reversed course.