Britton Lynn Kannady 1 sought employment as a police officer in the Cities of Krebs and MeAlester after he left his job as an officer for the City of Kiowa. Both Krebs and MeAlester refused to hire Mr. Kannady because of the statutory age limits governing the Oklahoma Police Pension and Retirement System (OPPRS). Mr. Kannady sued Krebs and MeAlester, alleging violations of the Age Discrimination in Employment Act (ADEA). The district court entered summary judgment against Mr. Kannady on his ADEA claim. Mr. Kannady appeals from the district court’s adverse judgment on his claim against Krebs, 2 arguing that the district court erred in applying the summary judgment standards and in concluding that the OPPRS was not a subterfuge to evade the purposes of the ADEA. Exercising jurisdiction under 28 U.S.C. § 1291, we AFFIRM.
I. BACKGROUND
The OPPRS is the state pension and retirement system for Oklahoma police officers.
See
Okla. Stat. tit. 11, § 50-102.1;
*1165
Steelman v. Okla. Police Pension & Ret. Sys.,
It is undisputed that at all material times Mr. Kannady was older than forty-five. In June of 2004, Mr. Kannady left his position as a police officer with the City of Kiowa. Because Kiowa did not participate in the OPPRS, Mr. Kannady had never been a member of the OPPRS. Mr. Kannady soon thereafter sought employment with other law enforcement agencies, *1166 including those in McAlester and Krebs. McAlester has been a participating municipality in the OPPRS since 1981, and Krebs had been an active, participating municipality since at least October 2004. 5 Both cities refused to hire Mr. Kannady as a police officer, claiming that they could not hire him because he was over the age of forty-five and had never been a participating member in the OPPRS. During his job search, Mr. Kannady secretly recorded two conversations he had with Dennis Cook, the Police Chief of Krebs, in which Chief Cook told Mr. Kannady that Mr. Kannady was too old to be hired as a police officer.
After exhausting his administrative remedies with the Equal Employment Opportunity Commission (EEOC), Mr. Kannady filed suit in federal court, asserting violations of the ADEA against Krebs and McAlester and making various state-law claims against Krebs, McAlester, and Kiowa. Following discovery, Mr. Kannady filed a motion for partial summary judgment against Krebs and McAlester on the ADEA claims, and the cities filed cross-motions for summary judgment. The parties disputed the applicability of the law enforcement exception to the ADEA contained in 29 U.S.C. § 623(j). While the ADEA “broadly prohibits arbitrary discrimination in the workplace based on age,”
Lorillard v. Pons,
(j) Employment as firefighter or law enforcement officer
It shall not be unlawful for an employer which is a State [or] a political subdivision of a State ... to fail or refuse to hire or to discharge any individual because of such individual’s age if such action is taken—
(1) with respect to the employment of an individual as a firefighter or as a law enforcement officer, ... and the individual has attained—
(A) the age of hiring or retirement, respectively, in effect under applicable State or local law on March 3, 1983; [and]
(2) pursuant to a bona fide hiring or retirement plan that is not a subterfuge to evade the purposes of this chapter.
29 U.S.C. § 623(j).
In sum, as relevant here, § 623(j) provides that it shall not be unlawful for a local government to refuse to hire a person for a law enforcement position on the basis of age, if that person is over the maximum age of hire that the local government had in effect for that position as of March 3, 1983, and the refusal to hire was pursuant to a bona fide hiring or retirement plan that is not a subterfuge to evade the ADEA’s purposes.
See Kopec,
*1167
The date referenced in § 623©(1)(A)— March 3, 1983 — is the day after the Supreme Court issued
EEOC v. Wyoming,
In his motion for summary judgment, Mr. Kannady argued that Krebs’s refusal to hire him on the basis of age was not protected by the law enforcement exception. First, he claimed that Krebs denied him employment because of his age before October 2004, which is when Krebs began actively participating in the OPPRS; thus, “Krebs’ discriminatory policy was independent of and pre-dated its membership in the OPPRS.” Aplt.App. at 52. In other words, Mr. Kannady contended that Krebs could not assert that it was acting under the maximum-age prescriptions of the OPPRS when it denied him employment prior to October 2004, because it was not a member of the OPPRS at that time. Consequently, reasoned Mr. Kannady, Krebs could not find protection under § 623©(1) because it would not have been acting with reference to an “age of hiring” requirement that was “in effect under applicable State or local law on March 3, 1983.” 29 U.S.C. § 623©(1)(A). As evidence of when he was denied employment, Mr. Kannady cited transcripts of the recorded conversations between himself and Chief Cook and described the conversations as occurring in July 2004. 6 Second, argued Mr. Kannady, even if Krebs satisfied the requirements of § 623©(1), Krebs could not rely on the law enforcement exception because the OPPRS was a subterfuge to evade the purposes of the ADEA. See id. § 623©(2).
In Krebs’s cross-motion for summary judgment, Krebs claimed that it could not be liable for violating the ADEA because both requirements of the law enforcement exception had been satisfied: (a) the law establishing the OPPRS was enacted before March 3, 1983, and (b) the OPPRS was a bona fide retirement plan. Krebs made no claim about when it refused to hire Mr. Kannady.
In response to Krebs’s cross-motion for summary judgment, Mr. Kannady reiterated his claims. He again asserted that Krebs denied him employment before it became a participating municipality in the OPPRS and that the OPPRS was a subterfuge to evade the purposes of the ADEA. Finally, in Krebs’s reply brief, Krebs argued that it did not need to demonstrate the point in time when it refused to employ Mr. Kannady in order to secure the protection of the law enforcement exception. Because the law establishing the OPPRS was in existence before March 3, 1983, and the law applies to all full-time officers hired in Oklahoma by participants in the *1168 OPPRS, Krebs argued that “it is irrelevant as to when a particular municipality begins to apply the restrictions in the already existing state statute,” when that statute’s subject matter directly relates to the hiring of law enforcement officers by municipalities. Aplt.App. at 397 (emphasis added).
The district court granted Krebs’s cross-motion for summary judgment, concluding that Krebs was protected under the law enforcement exception. First, the court held that Krebs clearly based its refusal to hire Mr. Kannady on the law governing the OPPRS. The court reasoned that Krebs was subject to the OPPRS since its pre-1983 enactment, even though it was not an active participant in the OPPRS until October 2004; therefore, Krebs could properly claim to have been acting pursuant to the OPPRS and its hiring-age restriction when it refused to hire Mr. Kannady. See, e.g., id. at 704 (“[T]he law requiring participation in the OPPRS clearly applied to the City of Krebs (and to every other municipality in the State of Oklahoma) even though it was not actually participating.”).
Second, the district court determined that — contrary to Mr. Kannady’s assertions — the statements made by Mr. Kannady and Chief Cook during their recorded conversations clearly demonstrated that the conversations occurred after October 2004. “Absent any controverting evidence, e.g., an affidavit from [Mr. Kannady] as to when the conversations occurred, it is therefore undisputed that [Mr. Kannady] was not refused employment based on his age prior to the City of Krebs’ participation in the OPPRS.” Id. at 706. This conclusion presented an additional reason why Krebs’s actions fell within the protective ambit of § 623(j)(l): even if active participation in the OPPRS was required on these facts to claim the protection of § 623(j)(l), according to the district court, the evidence established that Krebs was an active participant of the OPPRS at the time it refused to hire Mr. Kannady. 7 Finally, the court held that the requirements of § 623(j)(2) were met because the OPPRS was not a subterfuge to evade the purposes of the ADEA.
After granting summary judgment on Mr. Kannady’s ADEA claims, the district court declined to exercise supplemental jurisdiction over Mr. Kannady’s state-law claims against Kiowa. Mr. Kannady timely appealed the judgment as to Krebs.
II. DISCUSSION
A. Standard of Review
“We review de novo a grant of summary judgment, applying the same standard used by the district court.”
Jenkins v. Wood,
B. The District Court’s Application of Summary Judgment Standards
On appeal, Mr. Kannady argues that the district court erred in holding that Krebs acted pursuant to the OPPRS and, consequently, with reference to an “age of hiring ... in effect under applicable State or local law on March 3, 1983.” 29 U.S.C. § 623(j)(l)(A). First, Mr. Kannady argues that the district court erred in holding that, regardless of the precise date when Krebs refused to hire Mr. Kannady, Krebs acted under “applicable” law because it based Krebs’s decision on the OPPRS. According to Mr. Kannady, if Krebs had refused to hire Mr. Kannady before October 2004, it could not have been acting under “applicable” law, since the precepts of the OPPRS only apply to “participating municipalities,” and Krebs was not a participating municipality before October 2004. Next, Mr. Kannady attacks the district court’s conclusion that Krebs’s refusal to hire Mr. Kannady actually occurred after October 2004 and there was no genuine factual dispute about this material matter. In support of this argument he first claims that Krebs failed to carry its initial burden of demonstrating the absence of a genuine issue of material fact because it “offered no undisputed proof or facts concerning when the discriminatory conduct took place.” Aplt. Opening Br. at 15. And second, Mr. Kannady argues that the district court erred in determining that it was undisputed that the recorded conversations between Mr. Kannady and Chief Cook occurred after October 2004.
Our resolution of Mr. Kannady’s contentions regarding the district court’s application of summary judgment standards ultimately turns upon the district court’s conclusion that all material facts indicated that Krebs refused to hire Mr. Kannady only after October 2004 (i.e., only after it affirmatively began participating in the OPPRS). If this conclusion is affirmed, there is no dispute that § 623(j)(l) is satisfied, because Krebs would clearly have acted pursuant to a plan in effect under covered state law. As Mr. Kannady highlights, Krebs did not argue in its motion for summary judgment that Krebs was entitled to summary judgment because it was undisputed that Krebs refused to hire Mr. Kannady only after October 2004. On the contrary, Krebs argued that the date it refused to hire Mr. Kannady was “irrelevant.” Aplt.App. at 397. Because Krebs made no attempt to demonstrate that the alleged discrimination did not occur until after October 2004, Mr. Kannady believes that Krebs failed to carry its initial burden of demonstrating that there was no evidence in the record to support judgment for Mr. Kannady.
See Trainor,
However, we conclude that even assuming arguendo that Krebs — as the moving party — failed to carry its initial burden under the analytic framework for summary judgment, the district court did not err in determining that Krebs could avail itself of § 623(j)(l)’s protection, based upon the record evidence concerning the date when Krebs denied employment to Mr. Kannady. Under our working assumption — i.e.,.that Krebs failed to carry its initial burden — we view the district court’s determination as effectively being a sua sponte resolution of the matter at issue. And, in limited circumstances, including those present here, the law permits district courts at the summary judgment phase to perform precisely that sua sponte function. Accordingly, so long as our de novo review confirms that the district court was correct in its sua sponte resolution of the issue — that is, when it held that there was no genuine factual dispute that Krebs denied Mr. Kannady employment after October 2004 — then we discern no error in the district court’s ultimate conclusion (absent a subterfuge under § 623(j)(2)) that summary judgment was properly entered in favor of Krebs.
A district court may grant summary judgment on a ground not formally raised in a summary judgment motion, “ ‘so long as the losing party was on notice that she had to come forward with all of her evidence.’ ”
Howell Petroleum Corp. v. Leben Oil Corp.,
In this case, Mr. Kannady cannot demonstrate prejudice because he clearly knew that the date of the alleged discrimination would be an issue, and he had a full opportunity to present evidence to support his position. After all, it was Mr. Kannady — not Krebs — who raised this issue in
his
motion for summary judgment. When a district court’s sua sponte determination is based on issues identical to those raised by a moving party, the risk of prejudice is significantly lowered because “the judge already is engaged in determining whether a genuine issue of material fact exists and the parties have been given an opportunity to present evidence designed either to support or refute the request for the entry of judgment.” 10A Charles Alan Wright, Arthur R. Miller, Mary Kay Kane,
Federal Practice and Procedure
§ 2720 (3d ed.1998);
see Bridgeway Corp.,
Additionally, not only did Mr. Kannady raise this issue in his motion for summary judgment, he asserted in unequivocal terms that Krebs refused to hire him before October 2004, and he identified evidence in the record to support his claim. Consequently, the district court could reasonably view the record as including all of the evidence that Mr. Kannady deemed appropriate to support his claim and thus move to decide for purposes of summary judgment the timing question relating to Krebs’s refusal to hire Mr. Kannady.
See Bridgeway Corp.,
We next review de novo whether the district court’s conclusion is correct that the evidence unequivocally established that the refusal to hire Mr. Kannady occurred after October 2004. Mr. Kannady argues that the district court improperly weighed evidence and made inferences from the facts when it concluded that the recorded conversations between himself and Chief Cook occurred after Krebs be *1172 gan participating in the OPPRS in October 2004. We disagree.
We conclude that the district court did not err in concluding that the recorded conversations occurred after October 2004 and there was no genuine factual dispute about this, because the conversations are self-dating. During one conversation, Mr. Kannady and Chief Cook make statements that demonstrate that the conversation took place on December 30, 2004. Mr. Kannady asks: “What’s tomorrow night— is tonight New Year — tomorrow night’s New Year’s Eve.” Aplt.App. at 116. Chief Cook responds: “Yeah.” Id. During the other conversation, Mr. Kannady indicates that this conversation occurred in February 2005. In discussing his plans to take a firearms training course, Mr. Kannady says: “I’m going to go next month, I think, end of next month or first of April. I’m not sure when — when it is now, but I’m set up to go.” Id. at 105. Because Mr. Kannady did not start looking for a job with Krebs until July 2004 at the earliest, these statements clearly demonstrate that the recorded conversations occurred after October 2004.
Although Mr. Kannady asserted in his motion for summary judgment that the recorded conversations occurred before October 2004, the district court was under no obligation to accept a claim that was “blatantly contradicted by the record, so that no reasonable jury could believe it.”
Scott v. Harris,
C. The OPPRS as a Subterfuge
Under the ADEA’s law enforcement exception, a state can refuse to hire an individual as a firefighter or law enforcement officer if this refusal is “pursuant to a bona fide hiring or retirement plan that is not a subterfuge to evade the purposes” of the ADEA. 29 U.S.C. § 623(j)(2). Mr. Kannady does not contend that the OPPRS is not a bona fide hiring or retirement plan. Instead, he argues that the district court erred in determining that the OPPRS is not a subterfuge to evade the purposes of the ADEA. Mr. Kannady contends that the OPPRS is a subterfuge because the Oklahoma legislature enacted the OPPRS not out of public safety concerns, but for the “invidious financial purpose” of enhancing the state’s pension fund. Aplt. Opening Br. at 5. We conclude that Mr. Kannady cannot demonstrate subterfuge because he has failed to identify a non-hiring substantive provision of the ADEA that the OPPRS is a scheme to evade.
Like our sister circuits, we construe the word “subterfuge” in accordance with its ordinary meaning to be “a scheme, plan, stratagem, or artifice of evasion.”
Minch v. City of Chicago,
*1174
Instead, a plaintiff proves subterfuge by showing “ ‘that the employer is using the [law enforcement] exemption as a way to evade
another
substantive provision of the act.’ ”
Feldman,
In this regard, Mr. Kannady’s main argument — that the OPPRS was created for an “invidious financial purpose,” and not because of public safety concerns — is unavailing. Aplt. Opening Br. at 5. In particular, Mr. Kannady argues that “the OP[P]RS is hiding behind the veil of the law enforcement exemption to discriminate against law enforcement candidates over the age of forty-five (45) ... merely for financial reasons, since older officers do not pay as much into the pension plan created through the OPPRS.”
Id.
Even if Mr. Kannady could prove that the Oklahoma legislature adopted the OPPRS for reasons unrelated to public safety, he could not establish subterfuge unless these motivations “reveal a kind of discriminatory conduct that the ADEA by its very terms forbids.”
Minch,
Ultimately, Mr. Kannady cannot demonstrate subterfuge because he has failed to identify a non-hiring substantive provision of the ADEA that the OPPRS is a scheme to evade. See id. (rejecting the plaintiffs claims of subterfuge where the plaintiff “never points to any specific provision of the ADEA that is violated by [the New York statute]”). Although Mr. Kannady has at various times throughout the appeal hinted at possible provisions or regulations that might satisfy his burden, for the reasons noted below, we decline to consider the merits of any of these arguments.
First, Mr. Kannady argues that the OPPRS violates EEOC regulations; because he did not raise this argument before the district court, however, he has waived it on appeal.
See Stewart v. U.S. Dep’t of Interior,
Second, at oral argument, Mr. Kannady suggested that the OPPRS was being used as a subterfuge to evade a provision of the ADEA that pertains to benefit plans and retirement. Although Mr. Kannady made a similar argument at the district court regarding 29 U.S.C. § 623(f)(2), he did not make this argument in his opening brief on appeal and, in fact, specifically indicated in his reply brief that we “need not be burdened with this argument because it was essentially abandoned” in the district court. Aplt. Reply Br. at 13. Therefore, Mr. Kannady has waived this argument and we will not consider it on appeal.
See Anderson v. U.S. Dep’t of Labor,
Finally, Mr. Kannady argues in his reply brief that he identified a substantive provision of the ADEA that the OPPRS was a scheme to evade by citing 29 U.S.C. § 623(a)(1) in his opening brief, which provides that an employer may not “fail or refuse to hire or to discharge any individual or otherwise discriminate against any individual with respect to his compensation, terms, conditions, or privileges of employment, because of such individual’s age.” While Mr. Kannady did cite § 623(a)(1) in his opening brief, he failed to provide any analysis or reasoning whatsoever for the assertion he now makes. Indeed, even in his reply brief, Mr. Kannady did little more than assert in conclusory fashion that the OPPRS is a subterfuge to evade § 623(a)(1). Because Mr. Kannady has failed to adequately present his § 623(a)(1) argument in his opening brief, we decline to address it.
See Bronson v. Swensen,
In order to carry his burden of proving subterfuge, Mr. Kannady needed to prove that Krebs was using the OPPRS to evade a non-hiring substantive provision of the ADEA. Since Mr. Kannady cannot identify this ADEA provision, he has failed to demonstrate that the OPPRS is a subterfuge to evade the purposes of the ADEA. 11
*1176 III. CONCLUSION
For the foregoing reasons, we AFFIRM the district court’s order granting summary judgment in favor of Krebs.
Notes
. Following Mr. Kannady's death in January 2007, this court granted a motion to substitute the personal representative of Mr. Kannady’s estate, Chris Kannady, as appellant pursuant to Fed. R.App. P. 43(a)(1).
. Kiowa’s participation in this appeal is limited to the filing of a brief in which it asserts that it has no stake in this appeal because Mr. Kannady only appeals the district court's decision with regard to Krebs.
. At the time of its enactment, the legislation creating the OPPRS provided for a maximum hiring age of thirty-five.
See
Oklahoma Municipal Code § 50-112,
. Indeed, the district court noted that Krebs's decision to hire a third officer provided the impetus for its decision to begin affirmatively participating in the OPPRS in October 2004. Aplt.App. at 704 ("It is certainly true that the City of Krebs did not begin participating in the OPPRS until it was required to do so, i.e., when it hired a third full-time police officer in October, 2004.”).
. Although the parties dispute the exact date at which Krebs became a participating member in the OPPRS, they do agree that Krebs was a participating member at least as of October 2004. We do not need to determine the exact date Krebs began actively participating in the OPPRS to resolve this appeal. We are content to accept the parties’ agreed-upon approximate date of at least October 2004 as the operative one.
. This factual assertion is at least partly at odds with the averments of Mr. Kannady's complaint, in which he claimed that the conversations occurred between December 2004 and March 2005. See Aplt.App. at 68 ("From December 2004 through March 2005, Defendant Krebs through its agent Dennis Cook, Police Chief of Krebs, represented to Plaintiff on numerous occasions that Plaintiff was too old for any position as a police officer, whether part time or full time.”).
. There is no dispute among the parties that a conclusion that Krebs refused to hire Mr. Kannady after October 2004 would put Krebs within the protective scope of 29 U.S.C. § 6230(1) (i.e., any age discrimination by Krebs in refusing to hire Mr. Kannady would not violate that ADEA section). See Aplt. Reply Br. at 7 ("[I]f Krebs’ refusal to hire Mr. Kannady, on the basis of his age, occurred after October 1, 2004, then Krebs is protected by the law enforcement exception to the ADEA, provided the OPPRS complies with the remaining provisions of the ADEA.... ”).
. In fact, the district court could have potentially entered summary judgment for Krebs even if Krebs had filed no cross-motion at all.
See Doña Ana Mut. Domestic Water Consumers Ass’n v. City of Las Cruces,
. On appeal, Mr. Kannady attempts to cast doubt on the dates of the recorded conversations by pointing to evidence that was attached by Krebs to a motion in limine and by Kiowa to its motion for summary judgment on the state-law claims. Additionally, he insinuates that there was evidence in the record that could "support an inference" that Krebs refused to hire him before October 2004 on other occasions, not just in the recorded conversations. Aplt. Opening Br. at 12.
As previously discussed, Mr. Kannady argued in his motion for summary judgment in unequivocal terms that he was denied employment before October 2004, and he identified evidence in the record to support his claim. Thus, Mr. Kannady clearly had a full opportunity to put forth his best case in his motion for summary judgment, and it was reasonable for the district court to assume that he had done so. These arguments he now makes on appeal were not before the district court, and we are not inclined to consider them here.
See Coach Leatherware Co.,
Nevertheless, even if Mr. Kannady had submitted this evidence at the summary judgment stage, we are confident that the outcome would have been the same. The recorded conversations are self-dating, and thus, any dispute about the date of the tapes cannot be "genuine.” Furthermore, the numerous inferences Mr. Kannady asks us to draw from the evidence are simply too attenuated for us to conclude that there is a genuine issue of material fact about when he was denied employment.
See Anderson v. Coors Brewing Co.,
. Since we affirm the district court’s conclusion that Krebs refused to hire Mr. Kannady only after October 2004, we need not address the district court's additional rationale for why Krebs satisfied the requirements of § 623(j)(l) (i.e., that Krebs was subject to the OPPRS since its pre-1983 enactment, even though it was not an active participant in the OPPRS until October 2004 and, therefore, Krebs could properly claim to have been acting pursuant to the OPPRS and its hiring-age restriction when it declined to hire Mr. Kannady, even if that decision occurred before October 2004).
. Mr. Kannady also challenges the district court's holding that the OPPRS could not be a subterfuge because the OPPRS was enacted prior to the ADEA's application to state and local governments. Because Mr. Kannady has failed to identify a non-hiring substantive provision of the ADEA that the OPPRS is a scheme to evade, we conclude that he cannot prove that the OPPRS is a subterfuge. Therefore, we need not address the district court’s alternative rationale for why the OPPRS is not a subterfuge.
Furthermore, Mr. Kannady challenges the district court’s determination that he lacks standing to argue in support of his subterfuge argument that certain provisions of the OPPRS operate in a manner that violates the ADEA, in part because they provide greater protection for younger workers. In particular, Mr. Kannady points to two exceptions of the OPPRS that permit participating municipalities to employ an officer whose age exceeds the OPPRS maximum-age ceiling if they (1) employ two or fewer officers, or (2) are filling the position of police chief.
See, e.g.,
Aplt. Opening Br. at 19. The district court reasoned that Mr. Kannady "lacks standing” to advance contentions related to these two exceptions because "neither of these exceptions to participation in the OPPRS apply to him.” Aplt.App. at 704 n.4. However, contrary to the district court’s reasoning, we do not view the standing doctrine as implicated here. We assess the propriety of standing "as
*1176
of the time the action is brought”
Utah Ass’n of Counties v. Bush,
