Unionized Safeway workers in Colorado, including those in the Boulder Valley, could soon go on strike, and labor leaders have hinted that King Soopers workers could also be heading back to the

The union representing Safeway store employees in Colorado has given the required 72-hour notice that the strike is set to begin one minute before midnight on Sunday.

Safeway workers across Colorado may go on a strike beginning on Sunday, the local grocery workers union announced. The United Food & Commercial Workers Local 7 announced Wednesday night that