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,

Costco’s average hourly rate was approximately $31 an hour at the close of the fiscal year ended Sept. 1, according to the company’s latest annual 10-k filing with the Securit