On Sunday, some Safeway employees formed picket lines to fight what they say are unfair labor practices. Strikes happened at stores in Fountain, Pueblo, Estes Park and a distribution center in Denver.

Colorado Safeway employees will began a limited strike at stores in Estes Park, Fountain, and Pueblo Sunday after contract negotiations with Albertsons Companies, Inc. stalled.

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.