FOX31's Kasia Kerridge details the Safeway and Albertson's union strike as more stores across Colorado join in.

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 are striking at the same time as contract negotiations between workers and King Soopers are coming to a head. The union is negotiating with King Soopers and parent Kroger after a strike in February. That strike lasted almost two weeks before a deal was reached to pause the labor action for 100 days. That pause expired last month.

Without a labor agreement in place with Union UFCW Local 7, Estes Park Safeway employees will go on strike on Sunday morning, joining just three other Safeway locations,