Opinion for the Court filed by Circuit Judge TATEL.
Following trial, a jury rejected appellant’s claim that the Library of Congress violated Title VII of the Civil Rights Act of 1964 when it selected someone else for an open position. Now seeking a new trial, appellant argues that the district court erred by instructing the jury that he had to prove that unlawful discrimination was the “sole reason” for his non selection. Although we agree that “sole reason” is not the correct standard, the jury instructions themselves corrected any error by defining “sole reason” as “but-for” causation. Recognizing, however, that our recent Title VII employment discrimination cases have caused some confusion, we take this opportunity to clarify the requirements the statute places upon plaintiffs and the courts.
I.
Appellant Jorge Ponce, a Cuban American male, applied for a position as Director of the Library of Congress’s Office of Workplace Diversity but was passed over in favor of Deborah Hayes, an African American female. Although Hayes received the highest interview scores out of the sixteen finalists for the position, she lacked some credentials that Ponce pos *843 sessed, such as a master’s degree in Library Science and experience working as a librarian. After exhausting his administrative remedies, Ponce filed suit in the United States District Court for the District of Columbia, alleging that the Library had discriminated against him on the bases of race, sex, and national origin in violation of Title VII of the Civil Rights Act of 1964, 42 U.S.C. §§ 2000e et seq.
Before empaneling the jury, the district court shared its proposed jury instructions with the parties. In relevant part, the instructions read:
Mr. Ponce bears the ultimate burden proving intentional discrimination in violation of Title VII. The Library is not required to prove that it did not intentionally discriminate. In order to carry this burden of proof, Mr. Ponce must prove that illegal discrimination on the basis of race and/or national origin and/or sex was the sole reason for his non selection. That is he must prove that but for his race and or but for his national origin and or but for his sex, he would have been hired by the Library.
Trial Tr. at 34 (Sept. 30, 2010). Explaining the instruction, the district court observed that “the but for language of course comes right out of recent Supreme Court decisions,” and that “the solely language comes out of’ this court’s decision in
Ginger v. District of Columbia,
Ponce objected to the instructions, urging the court to strike the “sole reason” language. Ponce also asked the court to use the “because of’ causation language codified in Title VII instead of “but for.” See 42 U.S.C. § 2000e-2(a) (“It shall be an unlawful employment practice for an employer ... to discriminate against any individual ... because of such individual’s race, color, religion, sex, or national origin[.]” (emphasis added)). Ponce’s lawyer then engaged in the following exchange with the district court:
MR. KATOR: [W]e have been saying all along that it was because of. So I think that the answer would be let’s just use the phrase [“jbecause of[”] because that’s what’s in the statute. If we do that, then we avoid it.
THE COURT: The Supreme Court has recently told us that because of means but for. So I’m going to stick in, let me stick with but for sure.
MR. KATOR: There’s nothing wrong with that certainly, Your Honor. But again, just because if we don’t know we can’t go wrong with the statutory definition, that much we know. Congress has said because of.
THE COURT: I think I’m going to go with the way I’ve modified it.
Trial Tr. at 5-6 (Sept. 27, 2010). Following trial, the jury returned with a verdict in favor of the Library.
On appeal, Ponce contends that the wording of the jury instructions constitutes reversible error. He also argues that the district court erred by refusing to admit into evidence an administrative recommendation that the Library find that Ponce “was the subject of unlawful discrimination.” Ponce v. Billington, Personnel Appeals Board Report 32, No. 08-1028, ECF No. 43-4.
II.
We begin our analysis of the jury instruction issue with a little black-letter law. Title VII provides that “[a]ll personnel actions affecting employees or applicants for employment” in the federal gov
*844
ernment “shall be made free from any discrimination based on race, color, religion, sex, or national origin.” 42 U.S.C. § 2000e-16(a). It is well-established that this provision “legislated for federal employees essentially the same guarantees against ... discrimination that previously it had afforded private employees.”
Barnes v. Costle,
Title VII provides two separate ways for plaintiffs to establish liability. First, 42 U.S.C. § 2000e-2(a)(l) bars discrimination
“because of ...
[an] individual’s race, color, religion, sex, or national origin.” (emphasis added). A plaintiff can establish liability under this section by proving that a protected characteristic was a but-for cause of the adverse employment action.
See McKinney v. Dole,
In addition to the but-for standard, 42 U.S.C. § 2000e-2(m) provides that “an unlawful employment practice is established when ... race, color, religion, sex, or national origin was
a motivating factor
for any employment practice.” (emphasis added). Authorizing what is known as a “mixed-motive” case, this provision allows a plaintiff unable to establish that a protected characteristic was the but-for cause of an adverse employment action to prevail by showing that unlawful discrimination was “a factor motivating the adverse action.”
Ginger,
Even though we have described but-for and mixed-motive cases as “alternative ways of establishing liability,”
id.
at 453, a plaintiff may proceed under both theories simultaneously. In
Price Waterhouse v. Hopkins,
[njothing in this opinion should be taken to suggest that a case must be correctly labeled as either a “pretext” case or a “mixed-motives” case from the beginning in the District Court; indeed, we expect that plaintiffs often will allege, in the alternative, that their cases are both. Discovery will often be necessary before the plaintiff can know whether both legitimate and illegitimate considerations played a part in the decision against her.
Id.
at 247 n. 12,
Although a plaintiff need not plead a precise theory of causation in the complaint, at some point he must place the employer and court on notice as to the theory or theories under which he intends to proceed. In
Ginger,
for example, we held that a group of plaintiffs was required to argue that race was a “motivating factor” if it wished the court to consider a mixed-motive theory when ruling on a summary judgment motion.
The key issue in this case is whether the district court, attempting to instruct the jury on the but-for theory of liability, abused its discretion when it explained that “Ponce must prove that illegal discrimination ... was the
sole reason
for his non selection.” Trial Tr. at 34 (Sept. 30, 2010) (emphasis added).
Czekalski v. LaHood,
It is true that our own Title VII cases have said that a plaintiff may prevail in a
motivating-factor
(mixed-motive) case without showing that unlawful discrimination was “the sole or but-for motive for the employment action.”
See Fogg,
This brings us to the jury instruction in this case. Had the district court stopped at the end of the second sentence — Ponce “must prove that illegal discrimination ... was the sole reason for his non selection” — we might well have reversed. But caught between our language in Ginger and the Supreme Court’s repudiation of a “sole cause” standard, the district court sought to harmonize binding case law by defining “sole reason” as “but for” cause. Specifically, immediately following the “sole reason” language, the district court added the following definition: “[t]hat is he must prove that but for his race and or but for his national origin and or but for his sex, he would have been hired by the Library.” Trial Tr. at 34 (Sept. 30, 2010). Given this clear definition of “sole reason,” the instructions fairly and adequately conveyed the law to the jury. We therefore see nothing in the jury instructions that constitutes an abuse of discretion.
Nor did the district court err by failing to give a mixed-motive instruction. Ponce argued his case only under a but-for theory of liability. In his colloquy with the *847 district court, Ponce’s lawyer expressly confirmed that “we have been saying all along that it was because of,” and further stated “[tjhere’s nothing wrong with that certainly,” when the district court noted that “because of means but for.” Trial Tr. at 5 (Sept. 27, 2010). Moreover, although Ponce contended at oral argument before this court that he had submitted a proposed mixed-motive instruction to the district court, his filings belie that assertion. Responding to the district court’s request that the parties submit “proposed alternative language” to its jury instructions, Ponce submitted a red line version of the district court’s instructions with the “sole reason” language crossed out. Had the district court accepted this suggestion, the jury would have received a clear but-for instruction. Nowhere in the record do we find any indication that Ponce proposed a mixed-motive instruction.
III.
We can easily dispose of Ponce’s other argument: that the district court erred when it excluded a portion of a report by the Personnel Appeals Board of the Government Accountability Office (PAB). After Ponce filed an administrative complaint alleging discrimination, the Library delegated investigation of that complaint to PAB. See Ponce v. Billington, Personnel Appeals Board Report 1, No. 08-1028, EOF No. 43^4 (explaining that because Ponce’s “complaint concerned the selection of the Library official responsible for processing discrimination complaints, the Library entered into an Interagency Agreement” with GAO to process and investigate the complaint). PAB ultimately recommended that the Library determine Ponce “was the subject of unlawful discrimination,” id. at 32 — a recommendation the Library rejected.
Prior to trial, Ponce moved to have the entire PAB report admitted as evidence. Although the district court admitted the “Factual Background” section of the report, it excluded the remaining portions— including the recommended finding of discrimination — because the analysis was “extraordinarily weak” and “shouldn’t be before the jury.” Pretrial Tr. at 6.
Ponce urges us to hold that recommendations of administrative bodies, like PAB, are
per se
admissible. But along with at least seven of our sister circuits, we think it best to leave the admissibility of administrative reports in this context to the discretion of the trial court.
See
Jamie Goetz, Comment,
Whose Opinion Really Matters? Admitting EEOC Reasonable Cause Determinations as Evidence of Discrimination,
76 U. Cin. L.Rev. 995,1000 n. 38 (2008) (citing cases). As the Seventh Circuit explained: “A rule of
per se
admissibility ... would clearly undercut the district court’s function as an independent fact-finder.”
Tulloss v. Near N. Montessori Sch., Inc.,
Nor does Ponce point to anything in the record to suggest that the district court abused its discretion in excluding the PAB’s conclusion. Quite to the contrary, the district court determined that the administrative recommendation and its analysis were “extraordinarily weak.” Pretrial Tr. at 6. The district court therefore determined that the recommendation was “inadmissible as unduly prejudicial per Federal Rule of Evidence 403.” Minute Order, Ponce v. Billington, No. 08-1028 (Sept. 24, 2010). This seems right to us.
IV.
For the foregoing reasons, we affirm the jury verdict in favor of the Library.
So ordered.
