The role of jurors in criminal vs civil trials differs in three big ways: how sure they have to be before deciding, how much agreement they need among themselves, and whether they set the consequences. A criminal juror must be convinced beyond a reasonable doubt and must agree unanimously with every other juror before voting to convict. A civil juror only needs to find one side’s story more likely than the other’s, can sometimes reach a verdict without full agreement, and personally decides how much money the losing side pays.
How Certain Jurors Must Be
The proof standard is the difference that shapes everything else. In a criminal case, the prosecution must prove every element of the charge beyond a reasonable doubt. The Supreme Court held in 1970 that this standard is constitutionally required under the Due Process Clause, and that no person may be convicted except upon proof beyond a reasonable doubt of every fact necessary to constitute the crime charged.1Legal Information Institute. In the Matter of Samuel Winship, Appellant If a reasonable explanation other than guilt fits the evidence, the juror is supposed to vote to acquit. The defendant never has to prove innocence.
Civil jurors work with a much lower bar. The plaintiff only needs to show that their version of events is more likely true than not, a standard called preponderance of the evidence.2United States District Court for the District of Vermont. Burden of Proof – Preponderance of Evidence The scales just have to tip past the midpoint. A civil juror doesn’t need to be firmly convinced, only persuaded that the plaintiff’s claim is more probable than not.
Some civil disputes use a middle standard called clear and convincing evidence, which requires jurors to find that a claim is highly probable. This applies to fraud cases, disputes over wills, and situations involving restraining orders or the withdrawal of life support. It sits between the everyday civil standard and the criminal one.
Agreement Required for a Verdict
Criminal verdicts for serious offenses must be unanimous in both federal and state courts. The Supreme Court confirmed this in 2020, holding that the Sixth Amendment requires every juror to agree before a defendant can be convicted of a serious crime.3Supreme Court of the United States. Ramos v. Louisiana That ruling eliminated the last state rules allowing non-unanimous criminal verdicts.
When even one juror refuses to convict after extensive deliberation, the result is a hung jury. The judge typically declares a mistrial, and the prosecution can choose to retry the case with a new panel. A retrial after a hung jury does not count as double jeopardy, because no verdict was ever reached.
Civil trials are more flexible. In federal civil cases, the verdict must be unanimous unless both sides agree otherwise.4Legal Information Institute. Federal Rules of Civil Procedure Rule 48 – Number of Jurors, Verdict, Polling Many state courts allow verdicts by supermajority, requiring agreement from, say, five out of six jurors or ten out of twelve. When no one’s liberty is at stake, the system tolerates less than perfect consensus to resolve the dispute.
What Jurors Decide Beyond the Verdict
In most criminal trials, the jury’s job ends once it delivers a guilty or not-guilty verdict. If the defendant is convicted, the judge handles sentencing based on statutory guidelines, the severity of the offense, and the defendant’s history. Jurors typically never hear about potential punishment during deliberations.
Capital cases are the major exception. After a guilty verdict in a death-penalty-eligible case, the trial moves into a separate penalty phase. The same jury hears additional evidence about aggravating factors that favor a death sentence and mitigating factors that weigh against it, then decides whether the defendant should be sentenced to death or life in prison.5Constitution Annotated. Role of Jury and Consideration of Evidence In some states the jury makes a binding decision; in others it issues a recommendation the judge can accept or override.
The Supreme Court has carved out one more role for criminal juries even outside capital cases. Under a 2000 ruling, any fact that increases a defendant’s sentence beyond the normal statutory maximum must be found by a jury and proved beyond a reasonable doubt, not simply decided by a judge under a looser standard.6Legal Information Institute. Apprendi v. New Jersey The exception is prior convictions, which judges can consider on their own.
Civil jurors have a much more direct hand in consequences. After finding a defendant liable, the jury’s next job is to put a dollar figure on the harm. Jurors calculate compensatory damages to cover actual losses like medical bills, lost income, and property repair costs. In cases involving reckless or egregious behavior, they may also award punitive damages designed to punish the defendant and discourage similar conduct.
Punitive awards are not unlimited. The Supreme Court has held that a punitive damages award violates due process when it is grossly excessive relative to the actual harm, and a trial judge can reduce an award that goes too far.7Justia. BMW of North America Inc. v. Gore Civil jurors still have broad discretion; the ceiling only matters at the extremes.
Jury Size and Selection
Federal criminal juries consist of 12 people. The parties can agree in writing to proceed with fewer, and a judge can allow 11 jurors to deliberate if one must be excused after trial begins, but 12 is the default.8Office of the Law Revision Counsel. Federal Rules of Criminal Procedure Rule 23 Federal civil juries can start with as few as 6 members and no more than 12.4Legal Information Institute. Federal Rules of Civil Procedure Rule 48 – Number of Jurors, Verdict, Polling State courts vary further, with some allowing juries as small as six for non-capital criminal cases. On a six-person civil panel, one juror’s perspective shapes a larger share of the outcome than it would on a twelve-person criminal panel.
Selection also plays out differently. Attorneys question prospective jurors and remove those who seem unable to be fair. The key difference is how many removals each side gets without stating a reason, called peremptory challenges. In a federal felony case, the defense receives 10 peremptory challenges and the prosecution gets 6. In capital cases, each side gets 20.9Legal Information Institute. Federal Rules of Criminal Procedure Rule 24 – Trial Jurors Federal civil trials are more balanced: each side gets just 3.10Office of the Law Revision Counsel. 28 USC 1870 – Challenges The criminal defendant’s extra challenges reflect what’s at stake. With prison time on the line, the system gives the defense more power to shape the jury.
One rule applies to both trial types: peremptory challenges cannot be used to exclude jurors based on race. The Supreme Court established that principle in a criminal case, holding that the Equal Protection Clause forbids prosecutors from striking potential jurors solely because of their race.11Justia. Batson v. Kentucky Later rulings extended the same prohibition to civil trials and to defense attorneys.
The Power to Acquit Against the Evidence
Criminal jurors hold a power that civil jurors do not: the ability to acquit a defendant even when the evidence clearly supports a conviction. This is called jury nullification. Because a not-guilty verdict cannot be appealed or overturned, a criminal jury that believes a law is unjust or that applying it would produce an unfair result can simply refuse to convict. The Supreme Court acknowledged this power as far back as 1895, though it has also held that judges have no obligation to tell jurors about it.
Nullification doesn’t meaningfully exist on the civil side. A civil verdict finding a defendant not liable can be challenged on appeal, and a judge can override a jury’s damages award if it conflicts with the evidence. Once a criminal jury says not guilty, the case is over.
What Stays the Same for You as a Juror
The qualifications and protections for jury service don’t depend on which type of trial you end up on. To qualify for federal jury duty, you must be a U.S. citizen at least 18 years old who has lived in the judicial district for at least a year, can communicate in English, and has no disqualifying felony conviction pending or on record.12United States Courts. Juror Qualifications, Exemptions and Excuses You won’t know whether the case is criminal or civil until you’re called into the courtroom.
Federal law prohibits your employer from firing, threatening, or punishing you for showing up. An employer who violates this protection faces liability for your lost wages, a court order to reinstate you, and a civil penalty of up to $5,000 per violation.13Office of the Law Revision Counsel. 28 USC 1875 – Protection of Jurors Employment If you’re reinstated, you get your seniority back and remain eligible for whatever insurance and benefits you had before service began.
Federal jurors receive $50 per day for attendance, with the trial judge able to increase that by up to $10 per day after the first 10 days of a lengthy trial.14Office of the Law Revision Counsel. 28 USC 1871 – Fees Transportation costs, tolls, and sometimes parking are reimbursed. State court pay varies widely and tends to be lower. Federal law does not require private employers to keep paying your regular salary during service, though some states and many employers voluntarily do.