About 18,000 Teamsters are set to strike 56 Costco stores across six states early Saturday unless an 11th-hour agreement ...

Members of the Teamsters union have authorized a strike against Costco on Feb. 1 unless they reach a deal with the warehouse retailer before the current contract expires on Jan. 31.

Costco reports net sales of $27.52 billion for the retail month of December, an increase of 9.9%. Net sales for the first 18 weeks come in at $94.04 billion, an increase of 8%. Get the Real Story ...