Crowd of Costco Teamsters holding signs and waving flags.
Costco Teamsters in San Diego joined hundreds of other union members from throughout southern California as they held a practice picket Thursday afternoon. (Photo courtesy of the Teamsters)

Costco Teamsters in San Diego joined hundreds of other union members from throughout southern California at a practice picket Thursday afternoon as the Jan. 31 deadline of the 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.

Practice pickets have already been held in Hayward, California; Sumner, Washington, and Long Island.

The Teamsters said the demands for fair wages and benefits for workers were a result of company profit.

Costco recently reported $254 billion in annual revenue and $7.4 billion in net profits — a 135% increase since 2018.

“Many of us have given decades of our lives to this company, and all we are asking for is a fair share of its massive success,” said John Robledo, a Costco worker in Carson, California, and a member of Local 572.

The final round of negotiations is set to begin on Monday near Costco’s corporate headquarters in Issaquah, Washington.