Workers at certain Safeway and Albertsons locations will begin striking on Sunday, in protest of what workers say are unfair labor practices, short-staffed stores, and frozen wages.

United Food and Commercial Workers Local 7 announced Saturday that, unlike the February strike by King Soopers workers, the Safeway/Albertsons walkout will begin on a more limited scale.

The bargaining committee for Safeway and Albertsons Company union workers in Colorado decided Wednesday to terminate their current contract extension, allowing a strike as early as Sunday morning.