Bryan Fields, a Costco employee in Baltimore and member of Teamsters Local 570, told ABC News that the strike deadline comes after months of stalled conversations, extensions and failed negotiations with the company.

Unionized Costco stores in the U.S. voted to authorize a strike. Here's everything to know about possible Costco strike locations and Arizona impact.

About 18,000 Costco workers will go on strike beginning Feb. 1 if their union doesn’t reach a deal with the warehouse retailer, the union announced Sunday. The Teamsters represent Costco workers in 56 warehouses across five states,