The burden of proof determines who must prove what and to what standard of certainty. In civil cases, the plaintiff bears the burden of proving each element of their claim by a preponderance of the evidence — meaning more likely than not, or "tipping the scales" even slightly. In criminal cases, the prosecution must prove every element of the offense beyond a reasonable doubt — the highest standard in American law. Certain civil matters, such as fraud, termination of parental rights, and clear and convincing evidence claims, require an intermediate standard. The allocation of the burden can be outcome-determinative: if the party with the burden fails to meet it, they lose on that issue regardless of what the opposing party presents.
Judge: "In a criminal case, the government has the burden of proving the defendant guilty beyond a reasonable doubt. This does not mean beyond all possible doubt or to an absolute certainty. It means that after considering all the evidence, you must be firmly convinced of the defendant's guilt."
Attorney: "Your Honor, I move for judgment as a matter of law. The plaintiff has rested and has failed to present any evidence on the element of causation. They have not met their burden of production." Judge: "Motion granted on the negligence claim."
Judge: "For the fraud claim, the plaintiff must prove each element by clear and convincing evidence — a higher standard than preponderance of the evidence. The evidence must be highly and substantially more probable to be true than not."
Students often conflate the burden of production with the burden of persuasion. The burden of production determines whether a party has introduced enough evidence to survive a directed verdict; the burden of persuasion determines who wins if the evidence is in equipoise. Additionally, "beyond a reasonable doubt" does not mean "beyond all doubt" — it requires moral certainty, not absolute certainty.
In re Winship, 397 U.S. 358 (1970)
Held that the Due Process Clause requires proof beyond a reasonable doubt for every element of a criminal offense, constitutionalizing this standard for criminal cases.
Addington v. Texas, 441 U.S. 418 (1979)
Established that civil commitment proceedings require clear and convincing evidence, defining the intermediate standard between preponderance and beyond reasonable doubt.
McDonnell Douglas Corp. v. Green, 411 U.S. 792 (1973)
Created the burden-shifting framework for employment discrimination cases, where the burden of production shifts between plaintiff and defendant at different stages of litigation.
What is the burden of proof in a court case?
The burden of proof is the obligation on a party to establish the facts necessary to support their case. It encompasses both the burden of production (presenting enough evidence to create a jury question) and the burden of persuasion (convincing the factfinder to the required degree of certainty). The party asserting a claim or charge typically bears this burden.
What are the three standards of the burden of proof?
The three main standards are: preponderance of the evidence (more likely than not, used in most civil cases), clear and convincing evidence (substantially more likely than not, used in fraud and certain civil rights cases), and beyond a reasonable doubt (the highest standard, used for criminal prosecutions). Each requires a different degree of certainty from the factfinder.
Does the burden of proof ever shift?
Yes, the burden of proof can shift in certain circumstances. In employment discrimination cases under the McDonnell Douglas framework, the burden shifts between plaintiff and defendant. When a defendant raises an affirmative defense such as self-defense or insanity, the burden of proving that defense typically shifts to the defendant.
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