Costco National Master Agreement approaches. Nationwide, more than 18,000 Teamsters at Costco are demanding a new contract and are prepared to strike if Costco does not meet their requests, the union said in a release.

Hundreds of Costco Teamsters from throughout Southern California held a practice picket today as the January 31 deadline of the Costco National Master Agreement approaches. Nationwide, more than 18,000 Teamsters at Costco are demanding an historic,

The Costco Teamsters represent more than 18,000 workers nationwide.

Teamsters General President Sean M. O'Brien, General Secretary-Treasurer Fred Zuckerman, Teamsters Warehouse Division Director Tom Erickson, and hundreds of Costco Teamsters rallied and engaged in a practice picket in Long Island,