3,800 workers walked off the job at JBS USA's Greeley, Colorado plant Monday, the first strike at a U.S. beef slaughterhouse in four decades.

3,800 workers walked off the job at JBS USA's Greeley, Colorado plant Monday, the first strike at a U.S. beef slaughterhouse in four decades.

Workers at a JBS plant in Greeley, Colo., went on strike this morning demanding higher wages and safer working conditions.