Desert Palace, Inc. v. Costa
The Supreme Court unanimously ruled that a worker claiming job discrimination does not need direct evidence — like an explicit biased statement — to get a jury instructed that the employer can still be liable even if other, lawful reasons also factored into the decision.
The ruling resolved a split among federal appeals courts over how strict a proof standard Congress meant to set in 1991 when it wrote the current mixed-motive rule into Title VII, and it means circumstantial evidence alone can support that instruction nationwide.
“Circumstantial evidence is not only sufficient, but may also be more certain, satisfying and persuasive than direct evidence.”
Explaining why the Court refused to require direct evidence for a mixed-motive jury instruction.
How it got here: A jury found for Costa; the Ninth Circuit, sitting en banc, reinstated that verdict; the casino asked the Supreme Court to review the jury-instruction standard.
The Case in Depth
What happened
Catharina Costa was the only woman working as a warehouse worker and heavy equipment operator at Caesars Palace in Las Vegas. After a series of disciplinary incidents, including a physical altercation with a male coworker who received lighter punishment, she was fired. She sued under Title VII, presenting evidence that she was singled out, disciplined more harshly than men, and subjected to sex-based slurs.
The question before the Court
Does a worker suing for job discrimination have to produce "direct evidence" of bias to get a jury instructed on the mixed-motive rule under Title VII?
The Court's answer
No — the Court unanimously held that Title VII's mixed-motive provision, as rewritten by Congress in 1991, does not require a plaintiff to produce direct evidence of bias before a jury can be told the employer may still be liable if discrimination was one motivating factor among several. The statute's text only requires the plaintiff to "demonstrate" that a protected trait was a motivating factor, and Congress defined "demonstrates" to mean the ordinary burdens of proof, without singling out a special evidentiary showing.
Because Title VII is silent on the type of proof needed, the Court applied the ordinary civil-litigation rule that direct and circumstantial evidence carry equal weight. It also noted that reading in a direct-evidence requirement for plaintiffs would be inconsistent with using the identical term "demonstrates" elsewhere in the statute to describe the employer's defense, which no one argued required direct evidence.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Workers suing over discrimination often lack a smoking-gun statement from a manager and must instead rely on patterns of unequal treatment. This ruling means such circumstantial proof is enough to let a jury weigh whether bias was one motivating factor, making it easier for employees nationwide to get a favorable jury instruction and harder for employers to insist on a stricter evidentiary bar.
What changes now
This is a final merits decision resolving the legal standard, not sending the case back for further fact-finding — the Ninth Circuit's judgment reinstating the jury verdict for Costa stands. Going forward, federal courts nationwide must instruct juries on the mixed-motive standard whenever a plaintiff presents sufficient direct or circumstantial evidence, without demanding a heightened direct-evidence showing that some circuits had previously required.
What this does not decide
The Court expressly did not decide which opinion in the earlier Price Waterhouse case is legally controlling, nor did it address how the 1991 Act's mixed-motive standard applies outside the mixed-motive context, or what standards apply to any separate 'direct evidence' test — questions it said were unnecessary to reach.
Concurrences and dissents
Concurrence — Justice O'Connor
Justice O'Connor joined the Court's opinion in full but wrote separately to note her own view that, before the 1991 Civil Rights Act, the burden-shifting rule she favored in Price Waterhouse required direct evidence of bias. She emphasized that Congress, in 1991, codified a new evidentiary rule for mixed-motive cases that supersedes that older approach.
How the Court got there
The legal reasoning, step by step
- The Court began with the text of the 1991 amendment to Title VII, 42 U.S.C. § 2000e-2(m), which says a violation is established when a plaintiff 'demonstrates' that a protected trait was 'a motivating factor' in an employment decision, even if other factors also played a role.
- Because the statute's language was unambiguous and said nothing about requiring a special kind of proof, the Court applied the rule that when statutory text is clear, courts stop there rather than looking to legislative history or prior case law.
- The Court noted Congress specifically defined 'demonstrates' elsewhere in the statute to mean meeting the ordinary 'burdens of production and persuasion,' and Congress knew how to write a heightened evidence requirement (as it had done in other statutes) but chose not to do so here.
- The Court also pointed to the normal rule in civil litigation that a plaintiff may prove a case with either direct or circumstantial evidence, and observed that circumstantial evidence has long been treated as equally probative, including in criminal trials requiring proof beyond a reasonable doubt.
- The Court found it illogical to read a hidden direct-evidence requirement into one part of the statute (the plaintiff's burden) while conceding no such requirement applies to a nearly identical phrase governing the employer's affirmative defense elsewhere in the same law.
- The Court concluded that the statute imposes no direct-evidence requirement, so a plaintiff need only present enough direct or circumstantial evidence for a reasonable jury to find a protected trait was a motivating factor by a preponderance of the evidence.
Doctrinal impact
Cases affected by this decision
Distinguishes Price Waterhouse v. Hopkins (490 U.S. 228)
The Court avoided deciding which Price Waterhouse opinion controls, since the 1991 statute's text answers the question instead.