An unfair list (strike list or do not work order) is a list compiled by trade unions of employers who have engaged in unfair or strike-worthy labor practices, including:^{[citation needed]}

• Refusing to engage in collective bargaining negotiations with a trade union
• Refusing to sign applicable collective bargaining agreements (including MBAs)
• Failing to participate in grievance and arbitration procedures
• Failing to abide by the final award of an arbitrator
• Violating labor laws

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Typically, for purposes of solidarity, union members are prohibited by union bylaws from engaging in a contract for the rendering of services to entities that are on the unfair list.^[1][2]