Safeway workers in several Colorado cities entered the third day of labor strikes Tuesday against Safeway and Albertsons over alleged unfair labor practices, with picketing in Grand Junction prompting a temporary store closure.

Currently, unfair labor practice strikes are limited to Safeway/Albertsons locations in just four cities: stores in Estes Park, Fountain and Pueblo, and a distribution center in Denver.

Another grocery worker strike is in the works after UFCW Local 7 workers at Safeway and Albertsons Companies voted overwhelmingly in favor of the action — some stores voting unanimously in favor

On Monday, workers at more Safeway stores went on strike, demanding better pay, benefits, and staffing levels.