H. K. Porter Co., Inc., Disston Division-Danville Works v. National Labor Relations Board et al.

Decided March 2, 1970. Hugo Lafayette Black delivered the opinion of the Court.

Docket 230 · 397 U.S. 99 (1970) · Cited 349 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 4–2.

“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.

• National Labor Relations Board v. Jones & Laughlin Steel Corp. · 301 U.S. 1 (1937)
• National Labor Relations Board v. Insurance Agents' International Union · 361 U.S. 477 (1960)
• National Labor Relations Board v. American National Insurance · 343 U.S. 395 (1952)

Cited by

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

• National Labor Relations Board v. Burns International Security Services, Inc. · 406 U.S. 272 (1972)
• Lodge 76, International Ass'n of MacHinists & Aerospace Workers v. Wisconsin Employment Relations Commission · 427 U.S. 132 (1976)
• Golden State Transit Corp. v. City of Los Angeles · 475 U.S. 608 (1986)
• Textron Lycoming Reciprocating Engine Division v. United Automobile, Aerospace & Agricultural Implement Workers · 523 U.S. 653 (1998)
• National Labor Relations Board v. Bildisco & Bildisco · 465 U.S. 513 (1984)
• Air Line Pilots Ass'n v. O'Neill · 499 U.S. 65 (1991)
• United States v. Ramsey · 431 U.S. 606 (1977)
• National Labor Relations Board v. J. Weingarten, Inc. · 420 U.S. 251 (1975)
• Howard Johnson Co. v. Detroit Local Joint Executive Board · 417 U.S. 249 (1974)
• United Steelworkers of America, AFL-CIO-CLC v. Rawson · 495 U.S. 362 (1990)
• Ford Motor Co. (Chicago Stamping Plant) v. National Labor Relations Board · 441 U.S. 488 (1979)
• Building & Construction Trades Council of the Metropolitan District v. Associated Builders & Contractors of Massachusetts/Rhode Island, Inc. · 507 U.S. 218 (1993)
• Bowen v. United States Postal Service · 459 U.S. 212 (1983)
• New York Telephone Co. v. New York State Department of Labor · 440 U.S. 519 (1979)
• Carbon Fuel Co. v. United Mine Workers · 444 U.S. 212 (1979)
• United Mine Workers of America Health & Retirement Funds v. Robinson · 455 U.S. 562 (1982)
• National Labor Relations Board v. Magnavox Co. of Tennessee · 415 U.S. 322 (1974)
• California Brewers Assn. v. Bryant · 444 U.S. 598 (1980)

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).