This 1970 SCOTUS ruling held that the Due Process Clause of the 14th Amendment requires an evidentiary hearing before a recipient of certain government benefits can be deprived of such benefits. While an individual is not always entitled to a trial in such circumstances, he or she is entitled to an oral hearing before an impartial decision-maker, the right to confront and cross-examine witnesses, and the right to a written opinion setting out the evidence relied upon and the legal basis for the decision.
Goldberg v. Kelly, 397 U.S. 254 (1970) (Google Scholar, Oyez Project).