10:54 AM EDT, 06/27/2025 (MT Newswires) -- Costco Wholesale ( COST ) faces multiple official complaints filed by Teamsters Local 174 with the Washington State Department of Labor and Industries for allegedly breaching the collective bargaining agreement by refusing to pay guaranteed wages, the union said Friday.

A group of 150 drivers ratified their first contract in April 2025, with wage increases retroactive to Sept. 1, 2024, but the company has yet to pay the increased wages, Teamsters added.

Costco did not immediately respond to MT Newswires' request for comment.

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