Exxon Shipping Co. v. Baker
The Supreme Court ruled that the $2.5 billion punitive damages award against Exxon for the 1989 Exxon Valdez oil spill was too high under maritime law, and it capped punitive damages at an amount equal to compensatory damages -- about $507.5 million.
The Court also ruled that a federal pollution law, the Clean Water Act, does not block private punitive damages claims for oil spills, but the justices split evenly on whether Exxon itself could be held liable for the drunken captain's recklessness, leaving that question unresolved.
“a penalty should be reasonably predictable in its severity, so that even Justice Holmes’s “bad man” can look ahead with some ability to know what the stakes are in choosing one course of action or another.”
Explains why the Court sought a predictable, quantified standard for punitive damages.
How it got here: A federal jury awarded $5 billion in punitive damages; the Ninth Circuit repeatedly reduced it to $2.5 billion; Exxon and the plaintiffs both sought Supreme Court review.
The Case in Depth
What happened
In 1989, the tanker Exxon Valdez, piloted by a captain with a history of alcohol abuse, ran aground in Prince William Sound, Alaska, spilling millions of gallons of crude oil. Exxon paid over $1 billion in cleanup and settlements with governments, but commercial fishermen, Native Alaskans, and others who depended on the sound for their livelihoods sued Exxon for their own economic losses, including punitive damages meant to punish the company.
The question before the Court
After the Exxon Valdez oil spill, was the $2.5 billion punitive damages verdict against Exxon too large under maritime law?
The Court's answer
Partly -- the punitive damages award was too high, but not because federal pollution law barred punitive damages altogether. The Court held that the Clean Water Act does not preempt punitive damages for economic harm caused by oil spills, so Exxon could still face punitive liability. But reviewing the award under maritime common law rather than constitutional due process, the Court concluded that unpredictable, wildly varying punitive verdicts undermine fair notice and consistency.
To fix that, the Court adopted a 1:1 ratio between punitive and compensatory damages as the ceiling for maritime cases like this one, where the wrongdoing was reckless but not malicious or profit-driven. Applying that ratio to the $507.5 million in compensatory damages already calculated, the Court reduced the maximum allowable punitive award from $2.5 billion to $507.5 million and sent the case back for that adjustment.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
People and businesses harmed by the spill will receive a smaller punitive award than the jury or Ninth Circuit ordered, though still substantial compensation. The ruling sets a lasting 1:1 cap on punitive damages in federal maritime cases generally, shaping how future oil spills, shipping accidents, and other maritime disasters get punished in court.
What changes now
The case returns to the Ninth Circuit, which must reduce the punitive damages award to $507.5 million, matching the compensatory damages already calculated. This is a final merits ruling on the punitive-damages-ratio and preemption questions, though the Court was equally divided on whether Exxon can be held liable at all for its captain's recklessness, leaving that narrower legal question open and non-precedential for future cases.
What this does not decide
The Court split 4-4 (Justice Alito did not participate) on whether a shipowner can be held liable for punitive damages based on a ship captain's recklessness without the owner's own participation. Because of the tie, the Ninth Circuit's ruling on that point stands but sets no nationwide precedent for future maritime cases.
Concurrences and dissents
Concurrence — Justice Scalia
Justice Scalia, joined by Justice Thomas, joined the majority opinion in full, including its reliance on the Court's constitutional due process punitive-damages cases. But he noted he still believes those earlier due process decisions limiting state punitive damages awards were wrongly decided in the first place.
Dissent in part — Justice Stevens
“Applying the traditional abuse-of-discretion standard that is well grounded in the common law, I would affirm the judgment of the Court of Appeals.”Stevens's core objection that courts, not a fixed ratio, should review punitive awards.
Justice Stevens joined the Court's rulings on derivative liability and Clean Water Act preemption but dissented from the new 1:1 punitive damages ratio. He argued Congress, not the Court, should make this kind of empirical policy judgment, noted maritime law's limited compensatory damages may justify larger punitive awards, and would have applied traditional abuse-of-discretion review to uphold the $2.5 billion award.
Dissent in part — Justice Ginsburg
Justice Ginsburg joined Parts I-III but dissented from the new ratio rule, agreeing with Justice Stevens that Congress is better equipped to set numerical punitive damages limits. She questioned how the Court would apply its 1:1 ceiling to more blameworthy defendants in future cases and would have affirmed the Ninth Circuit's $2.5 billion award.
Dissent in part — Justice Breyer
Justice Breyer agreed with the majority's general approach but argued this case deserved an exception to the 1:1 ratio because Exxon knowingly let a relapsed alcoholic repeatedly pilot an oil tanker through waters people depended on for their livelihoods. He would have upheld the Ninth Circuit's $2.5 billion award, already a 50% reduction from the jury's verdict.
How the Court got there
The legal reasoning, step by step
- The Court treated its review as an exercise of federal maritime common law -- the body of judge-made rules governing shipping and sea-based disputes -- rather than constitutional due process review, because admiralty courts have long had authority to shape their own damages rules.
- Surveying the purposes of punitive damages (retribution and deterrence, not compensation), the Court found the real problem with such awards is not their frequency but their unpredictability: studies showed wide, unexplained variation in punitive-to-compensatory ratios even among similar cases, undermining fair notice to potential wrongdoers.
- The Court rejected relying on vague verbal 'reasonableness' factors for juries and judges, drawing an analogy to federal criminal sentencing, where open-ended discretion produced inconsistent results until Congress adopted quantified sentencing guidelines.
- It also rejected a fixed-dollar cap on punitive damages, reasoning that there is no 'standard' injury to peg a dollar figure to, and that courts, unlike legislatures, cannot easily revisit a chosen number as circumstances change.
- The Court instead adopted a ratio tying punitive damages to compensatory damages, relying on empirical studies showing that the median ratio of punitive to compensatory awards across many cases, including egregious ones, was below 1:1.
- Because Exxon's conduct, though reckless, was not malicious or aimed at increasing profit, and the harm was substantial rather than minor or hard to detect, the Court set 1:1 -- above the studies' median -- as the maritime-law ceiling and applied it to the $507.5 million in compensatory damages already found by the District Court.
Doctrinal impact
Cases affected by this decision
Distinguishes State Farm Mut. Automobile Ins. Co. v. Campbell (538 U. S. 408)
The Court said this due process case governing state-law punitive damages does not control maritime common law review.
Distinguishes BMW of North America, Inc. v. Gore (517 U. S. 559)
The Court distinguished this due process precedent as involving state-law awards, unlike its maritime common law ruling here.
Reaffirms Silkwood v. Kerr-McGee Corp. (464 U. S. 238)
The Court relied on this case in rejecting Exxon's attempt to split punitive damages from compensatory damages under the same claim.