(KFI) Walmart employees began walking off the job this week in advance of Black Friday, when three-union backed groups expect thousands of protests nationwide.

In October, a strike at a Walmart in Los Angeles spread to stores in 12 other cities, with local and national leaders holding protests at more than 200 stores for better pay, fairer schedules and more affordable health care. Since that time, workers have since walked off the job in Dallas and Richmond, Calif., and other upcoming strikes and protests are expected at stores in Chicago, Miami, Milwaukee and Washington, D.C.

Read more: KFI