Upjohn Co. v. United States
United States Supreme Court case

Upjohn Co. v. United States, 449 U.S. 383 (1981), was a Supreme Court case in which the Court held that a company (in this case, the Upjohn company) could invoke the attorney–client privilege to protect communications made between company lawyers and non-management employees. In doing so, the Court rejected the narrower control group test that had previously governed many organizational attorney–client privilege issues. Under the control group test, only employees who exercised direct control over the managerial decisions of the company were eligible to have their communications with corporate lawyers protected. The case also expanded the scope of the work-product doctrine.
While the Upjohn decision did not explicitly mention a warning procedure, the case gave rise to a procedure called an "Upjohn warning", in which a company's lawyer explains that the lawyer represents the company and not the individual employee with whom the lawyer is dealing. This is intended to ensure that the employee understands that the company can waive the attorney-client privilege at any time and disclose the contents of the conversation between the lawyer and the employee, even if the employee objects. In subsequent cases, failure to give an Upjohn warning has led to the employee being able to claim privilege over communications with company lawyers.
Background, procedural posture and issues
The case was taken by the Court on appeal from the United States Court of Appeals for the Sixth Circuit, which had held that the attorney–client privilege did not apply to communication between Upjohn's middle management officials and the company's attorneys.
“Upjohn Co. v. United States” enters the record as united States Supreme Court case. Crown Archives preserves that source wording while asking what Upjohn, United and States can confirm, complicate or overturn.
Why this record matters
“Upjohn Co. v. United States” is worth following because a concise public description often conceals a longer documentary argument. Here, Upjohn, United and States provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 1, 2026. The linked authority identifier is Q7898329. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1981.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Upjohn Co. v. United States”, its source revision and the description used here.
- Expand the search: follow Upjohn Co. v. United States primary sources, Upjohn Co. v. United States archive and Upjohn research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Upjohn Co. v. United States”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Upjohn Co. v. United States” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.