Dozens of companies in retail, banking, health care and technology await the U.S. Supreme Court’s answer to whether workplace arbitration agreements that ban class actions violate federal labor law.

The National Labor Relations Board on Tuesday distributed a list of pending cases in courts across the country that were sued over alleged labor violations rooted in arbitration agreements. The companies include household names such as AT&T Mobility Service, Uber Technologies Inc., Kmart Corp., UnitedHealth Group Inc. and Neiman Marcus. In all, the labor board identified some 75 disputes whose outcomes rest on how the Supreme Court resolves the dispute.