Kim Cordova, president of the United Food and Commercial Workers Local 7, has said staffing is one of the major issues for employees.

After failed union negotiations with King Soopers, around 10,000 grocery store employees across the Denver metro and the Front Range are planning to strike on Thursday morning.

Approximately 10,000 Colorado grocery store workers at 77 stores will begin a two-week strike at 5 a.m. on Thursday.