Washington State

Office of the Attorney General

Attorney General

Bob Ferguson


Lawsuit over 2017 strike threatens to undermine federal labor law

SEATTLE — Attorney General Bob Ferguson today announced he’s leading a coalition of 16 attorneys general in an amicus brief to the United States Supreme Court defending workers’ rights.

Glacier Northwest Inc v. International Brotherhood of Teamsters Local Union No. 174 potentially threatens workers’ right to strike and the effectiveness of the National Labor Relations Act. Washington and its multistate partners filed the “friend-of-the-court” brief late last week.

“The right to strike is critical to workers’ ability to advocate for themselves, and rightly protected under federal law,” Ferguson said. “My office will stand up for workers’ rights.”

Glacier Northwest, which also does business as CalPortland, provides construction services and building materials, including concrete. In 2017, Glacier and Teamsters Local 174 were in a labor dispute. Their collective bargaining agreement had expired, and in the course of negotiating a new one, the local called a strike.

When the strike was called, some Glacier drivers were in the process of delivering mixed concrete, but left the job to participate in the strike. The mixed concrete became unusable, and Glacier later filed a lawsuit against the union. Glacier argued this was an intentional destruction of property not protected by the union’s right to strike.

The Washington State Supreme Court disagreed, finding that, while “employees must take reasonable precautions to protect an employer’s plant, property, and products … economic harm may be inflicted through a strike as a legitimate bargaining tactic.” The court noted prior NLRB decisions upholding strikes that resulted in loss of perishable products.

The state Supreme Court found that the strike was arguably protected under the National Labor Relations Act, and therefore the National Labor Relations Board (NLRB) should determine whether the actions taken were reasonable.

Glacier subsequently appealed to the U.S. Supreme Court, which accepted the petition in October.

The states argue that numerous court and NLRB rulings protect strikes exerting economic pressure in the form of product loss, even when a strike is timed to create maximum risk to perishable products.

Glacier’s arguments would undermine the National Labor Relations Act, which protects the rights of workers and employers alike.

The Act protects employees’ “concerted activities” and explicitly recognizes the right to strike. The right to strike is essential to a core purpose of the Act to restore “equality of bargaining power between employers and employees.”

A concerted withdrawal of labor is virtually the only way employees can exert economic pressure on employers in attempting to bargain collectively. If strikes could not threaten economic loss to employers, they would be useless as bargaining tools, and employees would return to the pre-Act days of lacking any legally sanctioned bargaining power.

The Attorneys General joining Washington’s amicus brief are: Colorado, Connecticut, Illinois, Maine, Massachusetts, Michigan, Minnesota, Nevada, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Wisconsin and the District of Columbia.

The U.S. Supreme Court will hear arguments in the case in January 2023.


Washington’s Attorney General serves the people and the state of Washington. As the state’s largest law firm, the Attorney General’s Office provides legal representation to every state agency, board, and commission in Washington. Additionally, the Office serves the people directly by enforcing consumer protection, civil rights, and environmental protection laws. The Office also prosecutes elder abuse, Medicaid fraud, and handles sexually violent predator cases in 38 of Washington’s 39 counties. Visit www.atg.wa.gov to learn more.


Media Contact:

Brionna Aho, Communications Director, (360) 753-2727; Brionna.aho@atg.wa.gov

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