402 U.S. 389 (U.S. Supreme Court 1971)
Richardson v. Perales is a cornerstone of administrative law that clarifies both the evidentiary standards and the procedural due process baseline in informal agency adjudications, especially Social Security disability hearings.
Do written medical reports of physicians who examined a Social Security disability claimant, admitted without the physicians' live testimony or actual cross-examination, constitute substantial evidence sufficient to support a denial of benefits, and does reliance on such reports violate due process or the APA when the claimant was afforded an opportunity to subpoena and cross-examine the reporting physicians?
In Social Security disability hearings, which are informal and nonadversarial, relevant documentary evidence—including written medical reports—may be received and can constitute substantial evidence supporting an agency decision, even if such evidence is hearsay, provided it bears sufficient indicia of reliability. Due process is satisfied where the claimant has been given notice of, and a meaningful opportunity to exercise, the right to subpoena and cross-examine the authors of those reports. The APA permits agencies to admit any oral or documentary evidence that is not irrelevant, immaterial, or unduly repetitious and contemplates cross-examination only insofar as necessary for the full and true disclosure of the facts. See 42 U.S.C. § 405(b), (g); 5 U.S.C. § 556(d); Consolidated Edison Co. v. NLRB (defining substantial evidence).
Yes. The written medical reports of examining physicians constituted substantial evidence supporting the denial of benefits, and their admission and reliance, without live cross-examination, did not violate due process or the APA where the claimant had notice and the opportunity to subpoena and cross-examine the physicians but did not do so. The Supreme Court reversed the court of appeals and reinstated the Secretary's decision.
Perales is a foundational case in administrative law for three reasons. First, it squarely rejects a categorical bar on hearsay as substantial evidence in agency adjudication, confirming that reliable documentary evidence can sustain findings under the substantial evidence standard. Second, it articulates a practical due process baseline in mass, informal adjudications: what is required is notice and a meaningful opportunity to subpoena and cross-examine, not the mandatory production of every adverse witness. Third, it shapes Social Security practice by allowing ALJs to rely on consultative examiner reports and vocational evidence, even over contrary live testimony, so long as the record as a whole contains substantial evidence and the claimant had procedural tools to test adverse evidence. For students, Perales demonstrates how procedural design (nonadversarial hearings, relaxed evidence rules) intersects with constitutional due process and the APA. It is a staple precedent in understanding substantial evidence review, the admissibility and weight of hearsay in administrative proceedings, and the allocation of burdens and procedural rights in high-volume benefit programs.