Local 20, Teamsters, Chauffeurs & Helpers Union v. Morton, Doing Business as Lester Morton Trucking Co.

Decided May 25, 1964. Potter Stewart delivered the opinion of the Court.

Docket 485 · 377 U.S. 252 (1964) · Cited 326 times

We don’t yet publish a summary of this opinion — read the official text below for the Court’s holding and reasoning.

How the Justices voted

Decided 9–0.

“Concurring” means agreeing with the outcome; any split shown is the Court’s judgment, not each Justice’s reasoning. Source: the Supreme Court Database (Spaeth et al.), Washington University.

Precedents cited

Supreme Court decisions this opinion relies on, ordered by how often it cites each. Cases in our collection link through; others are named.

• Hurn v. Oursler · 289 U.S. 238 (1933)
• United Construction Workers v. Laburnum Construction Corp. · 347 U.S. 656 (1954)
• International Union, United Automobile, Aircraft & Agricultural Implement Workers v. Russell · 356 U.S. 634 (1958)
• Local 761, International Union of Electrical, Radio & MacHine Workers v. National Labor Relations Board · 366 U.S. 667 (1961)
• San Diego Building Trades Council v. Garmon · 359 U.S. 236 (1959)
• Local 174, Teamsters, Chauffeurs, Warehousemen & Helpers v. Lucas Flour Co. · 369 U.S. 95 (1962)
• Garner v. Teamsters, Chauffeurs & Helpers Local Union No. 776 · 346 U.S. 485 (1953)
• National Labor Relations Board v. Denver Building & Construction Trades Council · 341 U.S. 675 (1951)
• Sola Electric Co. v. Jefferson Electric Co. · 317 U.S. 173 (1942)
• Local 1976, United Brotherhood of Carpenters & Joiners v. National Labor Relations Board · 357 U.S. 93 (1958)
• Lauf v. E. G. Shinner & Co. · 303 U.S. 323 (1938)
• Colorado Anti-Discrimination Commission v. Continental Air Lines, Inc. · 372 U.S. 714 (1963)
• International Union of United Automobile v. O'Brien · 339 U.S. 454 (1950)
• International Longshoremen's & Warehousemen's Union v. Juneau Spruce Corp. · 342 U.S. 237 (1952)
• Gallagher v. Crown Kosher Super Market of Massachusetts, Inc. · 366 U.S. 617 (1961)

Cited by

Later Supreme Court opinions in our collection that cite this case.

• New York Telephone Co. v. New York State Department of Labor · 440 U.S. 519 (1979)
• Belknap, Inc. v. Hale · 463 U.S. 491 (1983)
• Lodge 76, International Ass'n of MacHinists & Aerospace Workers v. Wisconsin Employment Relations Commission · 427 U.S. 132 (1976)
• International Brotherhood of Electrical Workers v. Foust · 442 U.S. 42 (1979)
• United Mine Workers of America v. Gibbs · 383 U.S. 715 (1966)
• Connell Construction Co. v. Plumbers & Steamfitters Local Union No. 100 · 421 U.S. 616 (1975)
• Summit Valley Industries, Inc. v. Local 112, United Brotherhood of Carpenters · 456 U.S. 717 (1982)
• Metropolitan Life Insurance v. Massachusetts · 471 U.S. 724 (1985)
• Amalgamated Ass'n of Street, Electric Railway & Motor Coach Employees of America v. Lockridge · 403 U.S. 274 (1971)
• Hanna Mining Co. v. District 2, Marine Engineers Beneficial Ass'n · 382 U.S. 181 (1965)
• Local Union No. 189, Amalgamated Meat Cutters & Butcher Workmen v. Jewel Tea Co. · 381 U.S. 676 (1965)
• Golden State Transit Corp. v. City of Los Angeles · 475 U.S. 608 (1986)
• Caterpillar Inc. v. Williams · 482 U.S. 386 (1987)
• Federated Department Stores, Inc. v. Moitie · 452 U.S. 394 (1981)
• Allis-Chalmers Corp. v. Lueck · 471 U.S. 202 (1985)
• Farmer v. United Brotherhood of Carpenters & Joiners of America, Local 25 · 430 U.S. 290 (1977)
• Sears, Roebuck & Co. v. San Diego County District Council of Carpenters · 436 U.S. 180 (1978)
• Wisconsin Department of Industry, Labor & Human Relations v. Gould Inc. · 475 U.S. 282 (1986)
• Local 926, International Union of Operating Engineers v. Jones · 460 U.S. 669 (1983)
• Beasley v. Food Fair of North Carolina, Inc. · 416 U.S. 653 (1974)

Official text

Read the official opinion (U.S. Reports, govinfo.gov)

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Source: the U.S. Reports via govinfo.gov; authoring Justice and vote lineup from the Supreme Court Database (Washington University). Citation count from the Free Law Project’s CourtListener bulk data. Data last verified 2026-07-03. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).