I don't know if these workers are union but this is a big deal.

The U.S. Supreme Court dashed business hopes for new limits on class-action lawsuits, upholding a $5.8 million wage award to workers at a Tyson Foods Inc. pork-processing plant in Iowa.
A jury found that Tyson had underpaid workers at its Storm Lake, Iowa, plant for time spent putting on protective gear and walking to and from work stations.
The Obama administration backed the workers in the case.
Tyson Loses as High Court Upholds $5.8 Million Worker Award - Bloomberg Business