FOX31's Lisa D'Souza takes a look at the Safeway Denver distribution center as union strikes begin in a few Colorado cities. More stores and cities could be affected soon as more votes are planned.

They made good on that promise on June 15, joining the first cities to go on strike, including Fountain, Estes Park, and a Denver distribution center. Later in the day, workers from the Littleton Safeway also walked off the job,

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.

Employees at a Denver Safeway location walked off the job on Monday, joining their fellow workers on strike. ‘I was crying, I was a mess,’ Moises Sotelo-Casas’s daughter says. ‘He was in chains at his feet’

With the clock winding down toward Saturday night's deadline for new contract negotiations, a Colorado union has announced locations where grocery employees are set to walk off the job on Sunday in protest.

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.