Union antitrust: Supreme Court decisions

Every U.S. Supreme Court decision from the 1946 through 2025 Terms that the Supreme Court Database classifies under the issue “Union antitrust,” part of the Unions area.

Legal provisions most often involved

All 21 decisions, newest first

• National Labor Relations Board v. International Longshoremen's Assn.
  473 U.S. 61Decided June 27, 19856–3William J. Brennan Jr.
• Shepard v. National Labor Relations Board
  459 U.S. 344Decided January 18, 19838–1William H. Rehnquist
• Woelke & Romero Framing, Inc. v. National Labor Relations Board
  456 U.S. 645Decided May 24, 19829–0Thurgood Marshall
• International Longshoremen's Association v. Allied International, Inc.
  456 U.S. 212Decided April 20, 19829–0Lewis F. Powell Jr.
• Kaiser Steel Corp. v. Mullins
  455 U.S. 72Decided January 13, 19826–3Byron R. White
• H. A. Artists & Associates, Inc. v. Actors' Equity Assn.
  451 U.S. 704Decided May 26, 19816–3Potter Stewart
• National Labor Relations Board v. International Longshoremen's Assn.
  447 U.S. 490Decided June 20, 19805–4Thurgood Marshall
• Federal Maritime Commission v. Pacific Maritime Assn.
  435 U.S. 40Decided March 1, 19785–3Byron R. White
• National Labor Relations Board v. Enterprise Association of Steam
  429 U.S. 507Decided February 22, 19776–3Byron R. White
• Connell Construction Co., Inc. v. Plumbers & Steamfitters Local Union No. 100
  421 U.S. 616Decided June 2, 19755–4Lewis F. Powell Jr.
• Ramsey v. United Mine Workers of America
  401 U.S. 302Decided February 24, 19715–4Byron R. White
• American Federation of Musicians of the United States and Canada v. Carroll
  391 U.S. 99Decided May 20, 19685–2William J. Brennan Jr.
• National Woodwork Manufacturers Association v. National Labor Relations Board
  386 U.S. 612Decided April 17, 19675–4William J. Brennan Jr.
• Houston Insulation Contractors Association v. National Labor Relations Board
  386 U.S. 664Decided April 17, 19675–4William J. Brennan Jr.
• United Mine Workers of America v. Pennington
  381 U.S. 657Decided June 7, 19659–0Byron R. White
• Local Union No. 189 v. Jewel Tea Co., Inc.
  381 U.S. 676Decided June 7, 19656–3Byron R. White
• Associated Food Retailers of Greater Chicago, Inc. v. Jewel Tea Co., Inc.
  381 U.S. 761Decided June 7, 19656–3Per curiam
• Los Angeles Meat & Provision Drivers Union v. United States
  371 U.S. 94Decided November 19, 19628–1Potter Stewart
• United States v. Employing Plasterers Association of Chicago
  347 U.S. 186Decided March 8, 19547–2Hugo L. Black
• United States v. Employing Lathers Association of Chicago and Vicinity
  347 U.S. 198Decided March 8, 19547–2Hugo L. Black
• United Brotherhood of Carpenters and Joiners of America v. United States
  330 U.S. 395Decided March 10, 19475–3Stanley F. Reed

Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error