File photo of striking Walmart workers gathering during a rally to protest unsafe working conditions and poor wages outside a Walmart store in Pico Rivera

 
File photo of striking Walmart workers gathering during a rally to protest unsafe working conditions and poor wages outside a Walmart store in Pico Rivera
Striking Walmart workers gather during a rally to protest unsafe working conditions and poor wages outside a Walmart store in Pico Rivera, California in this October 4, 2012 file photo. REUTERS/Jonathan Alcorn/Files