OPINION
We must decide, inter alia, whether a rejected offer of judgment for the full amount of a putative class representative’s individual claim moots a class action complaint where the offer precedes the filing of a motion for class certification. We hold that it does not.
I
In April 2009, Gareth Pitts filed a class action complaint in Nevada state court against his employer, Terrible Herbst, Inc. (“Terrible”). The complaint alleged that Terrible failed to pay Pitts and other similarly-situated employees overtime and minimum wages and listed three causes of action: (1) a collective action under 29 U.S.C. § 216(b) for violations of the Fair Labor Standards Act (“FLSA”) (Count 1); (2) a class action for violations of Nevada labor laws (Count 2); and (3) a class action for breach of contract (Count 3). Terrible *1085 removed the case to federal court in May 2009.
In July 2009, the district court entered a scheduling order that called for all discovery to be concluded by January 2010. That same day, Pitts served Terrible with a request for production of documents, including “a list of the names and addresses of all of [its] employees who work or have worked in [its] retail locations ... on an hourly ... basis” and “[a]ll other records ... that show ... the hours worked by, [and] the wages paid to” these employees. After Terrible refused to comply with his discovery request, Pitts filed a motion to compel discovery. This motion, filed in October 2009, argued that “production of time records for all members of the putative class is highly relevant to whether class certification should be granted.”
In December 2009, a magistrate judge held a hearing on Pitts’s motion to compel and indicated that he would rule on it after the end of the year. In January 2010, without a ruling and facing an impending discovery deadline, Pitts filed a motion to extend the discovery schedule, in which he again argued that “a properly developed record can[not] be presented to the Court on the class certification issue without all or some of [the requested] discovery.” In February 2010, the magistrate judge granted the motion and extended discovery until April 2010. The motion to compel remained unresolved.
In the meantime, Terrible made Pitts an offer of judgement pursuant to Federal Rule of Civil Procedure 68. Under the terms of this offer, which was dated October 26, 2009, Terrible agreed “to allow judgment to be taken against it in the total amount of $900.00, plus costs and a reasonable attorney’s fee.” Although Pitts claimed only $88.00 in damages for himself, he refused Terrible’s offer.
Because Terrible’s offer fully compensated Pitts for his individual monetary claim, Terrible filed a motion to dismiss the action for lack of subject matter jurisdiction. Specifically, Terrible argued that its offer of judgment rendered the entire case moot. Following the Fifth Circuit’s decision in
Sandoz v. Cingular Wireless LLC,
In the same order that dismissed Counts 1 and 2 of the complaint for lack of subject matter jurisdiction (as we explain below, Count 3 had already been dismissed) the district court also dismissed Count 2 on alternative grounds. Specifically, the court concluded that a Federal Rule of Civil Procedure 23 class action alleging violations of state labor laws is incompatible with a collective action under the FLSA and held that when both actions are brought together, only the FLSA action may proceed. In its ruling, the district court acknowledged that Pitts sought to abandon his FLSA claims and pursue only his Rule 23 class action, but refused to allow him to do so. The court explained *1086 that Pitts failed to amend his complaint to reflect that he was waiving his FLSA claims and accused Pitts of forum shopping: “[S]o long as there is no FLSA claim, the jurisdictional anchor to this removed action is lost. It is then in the discretion of the Court under [28 U.S.C.] § 1367 whether it is appropriate to retain the ancillary jurisdiction it properly has over Plaintiffs state law claims, despite the fact that the federal claims are no longer in the suit.”
In prior orders, the district court also dismissed Count 3 of Pitts’s complaint for two separate reasons. First, the district court concluded that Count 3 lacked definiteness because it failed to specify the hourly wage provided for by Pitts’s alleged employment contract. However, because Pitts agreed to amend his complaint to specify the contractual hourly rate, the district court granted Pitts 15 days to amend. But Pitts never had a chance to do so because before the expiration of the 15 days, the district court dismissed Count 3 again, this time with prejudice. Specifically, the court construed the breach of contract claim as a claim for violation of Nevada Revised Statutes § 608.100 and dismissed it because only the Nevada Labor Commissioner may enforce this statute.
II
Pitts has timely appealed all dis-positive rulings of the district court. This appeal raises five issues: (1) whether a rejected Rule 68 offer of judgment made before the filing of a motion for class certification moots a putative class representative’s class action complaint; (2) whether Pitts was untimely in seeking class certification; (3) whether FLSA collective actions are incompatible with related Rule 23 state law class actions; (4) whether Nev. Rev.Stat. § 608.100 abrogates Nevada’s common law breach of contract action; and (5) whether Pitts pled his breach of contract claim with sufficient specificity. We address each issue in turn. 1
A
We first address whether a Rule 68 offer of judgment for the full amount of a putative class representative’s individual monetary claim moots that representative’s class action complaint. We agree with the district court that the class action is not moot.
1
Article III of the Constitution limits the jurisdiction of the federal courts to “Cases” or “Controversies.”
See
U.S. Const, art. Ill, § 2, cl. 1. The doctrine of mootness, which is embedded in Article Ill’s case or controversy requirement, requires that an actual, ongoing controversy exist at all stages of federal court proceedings.
See Burke v. Barnes,
Although the Supreme Court has described mootness as a constitutional impediment to the exercise of Article III jurisdiction, the Court has applied the doctrine flexibly, particularly where the issues remain alive, even if “the plaintiffs personal stake in the outcome has become moot.” Matthew I. Hall,
The Partially Prudential Doctrine of Mootness,
77 Geo. Wash. L.Rev. 562, 622 (2009). The distinction between issues that have become moot and parties whose interest in the issue may have become moot is especially visible in the context of class actions. For example, in
Sosna v. Iowa,
The Court explained that had the appellant sued only on her own behalf, “both the fact that she now satisfies the one-year residency requirement and the fact that she has obtained a divorce elsewhere would make this case moot and require dismissal.”
Id.
at 399,
The Court in
Sosna
anticipated the possibility that a case might become moot with respect to the named plaintiffs before the district court could rule on class certification. In such a case, “whether the certification can be said to ‘relate back’ to the filing of the complaint may depend upon the circumstances of the particular case and especially the reality of the claim that otherwise the issue would evade review.”
Id.
at 402 n. 11,
The Court addressed the mootness of actions that might otherwise evade review in
Gerstein v. Pugh,
The Court extended
Sosna
in
Deposit Guaranty National Bank v. Roper,
At the outset, the Court noted it was “important” that, as here, “[a]t no time did the named plaintiffs accept the tender in settlement of the case; instead, judgment was entered in their favor by the court without their consent and the case was dismissed over their continued objections.”
Id.
at 332,
*1089
In
Gemghty,
the Court extended
Roper
even to cases where the named plaintiff lacks any economic interest in the class certification decision. There, a federal prisoner brought a class action challenging the constitutionality of certain parole release guidelines and sought to certify “a class of all federal prisoners who are or will become eligible for release on parole.”
The Court observed that “[a] plaintiff who brings a class action presents two separate issues for judicial resolution. One is the claim on the merits; the other is the claim that he is entitled to represent a class.”
Id.
at 402,
Finally, in
County of Riverside v. McLaughlin,
2
Though Sosna, Gerstein, Roper, Geraghty, and McLaughlin do not address the precise issue before us — whether a putative class action becomes moot when the named plaintiff receives an offer of settlement that fully satisfies his individual claim before he files a motion for class certification' — they provide several principles that guide our decision.
First, if the district court has certified a class, mooting the putative class representative’s claim will not moot the class action. That is so because upon certification the class “acquire[s] a legal status separate from the interest asserted by [the class representative],”
Sosna,
Second, if the district court has denied class certification, mooting the putative class representative’s claim will not necessarily moot the class action. The putative class representative retains an interest in obtaining a final decision on class certification that allows him to litigate the denial of class certification on appeal.
See Geraghty,
Third, even if the district court has not yet addressed the class certification issue, mooting the putative class representative’s claims will not necessarily moot the class action. “[S]ome claims are so inherently transitory that the trial court will not have even enough time to rule on a motion for class certification before the proposed representative’s individual interest expires.”
McLaughlin,
3
Applying these principles to our case, we conclude that Terrible’s unaccepted offer
*1091
of judgment did not moot Pitts’s case because his claim is transitory in nature and may otherwise evade review. Accordingly, if the district court were to certify a class, certification would relate back to the filing of the complaint. We recognize that the canonical relation-back case — such as
Ger-stein
or
McLaughlin
— involves an “inherently transitory” claim and, correspondingly, “a constantly changing putative class.”
Wade v. Kirkland,
Invoking the relation back doctrine in this context furthers the purposes of Rule 23. Where the class claims are so economically insignificant that no single plaintiff can afford to maintain the lawsuit on his own, Rule 23 affords the plaintiffs a “realistic day in court” by allowing them to pool their claims.
Phillips Petroleum Co. v. Shutts,
Accordingly, we hold that an unaccepted Rule 68 offer of judgment — for the full amount of the named plaintiffs individual claim and made before the
*1092
named plaintiff files a motion for class certification — does not moot a class action.
3
If the named plaintiff can still file a timely motion for class certification, the named plaintiff may continue to represent the class until the district court decides the class certification issue. Then, if the district court certifies the class, certification relates back to the filing of the complaint. Once the class has been certified, the ease may continue despite full satisfaction of the named plaintiffs individual claim because an offer of judgment to the named plaintiff fails to satisfy the demands of the class.
See Sosna,
B
We next address whether the district court abused its discretion in finding that Pitts could no longer file a timely motion for class certification. “A district court abuses its discretion when it makes an error of law, when it rests its decision on clearly erroneous findings of fact, or when we are left with ‘a definite and firm conviction that the district court committed a clear error of judgment.’ ”
United States v. Hinkson,
We acknowledge that Pitts did not file a motion for class certification by January 2010, the initial discovery deadline. But at the time of the district court’s ruling, Pitts had already asked for and received an extension of this deadline until Apinl 2010. Pitts had a good reason for doing so: by January 2010, the court had not yet ruled on his motion to compel the production of certain documents that, in his view, were crucial to the class certification decision. 4 Pitts repeatedly and timely informed the court — in his motion to compel, at the hearing held for this motion, and in his motion to extend the initial discovery deadline — that he was awaiting the court’s ruling prior to filing a motion *1093 for class certification. 5 The court, however, never ruled on the motion to compel. Had the court ruled on Pitts’s motion— which was filed well before the initial discovery deadline — or had the court simply informed Pitts that he was nevertheless expected to file a motion for class certification by January 2010, Pitts could then have filed his motion for class certification in a “timely” manner. But the court did not do so.
Without a clear statement from the district court setting a deadline for the filing of a motion for class certification, Pitts could not predict that he was expected to file his motion by the end of the initial discovery deadline. Unlike the local rules of some district courts, the local rules of the District of Nevada do not impose a particular deadline for filing a motion for class certification. Nor did the scheduling order entered by the district court refer to any deadline for filing such a motion. In fact, the scheduling order contemplated that a class certification motion could be filed even after the initial discovery deadline; it states that “[djispositive motions shall be filed no later [than] 60 days after the end of discovery unless a motion for class action certification is made ... during such time.” The only other guideline Pitts had for determining when he was expected to seek class certification was Rule 23 itself, which states that the district couH must decide the class certification issue “[a]t an early practicable time.” Fed.R.Civ.P. 23(c)(1)(A). Under these circumstances — where the court had extended the initial discovery deadline at the time of its ruling, where a motion to compel the production of documents allegedly crucial to the class certification decision had been filed well in advance of the initial discovery deadline and was still pending, where neither the local rules nor the court’s own scheduling order imposed a deadline for seeking class certification, and where the scheduling order actually suggested that a motion for class certification could be filed even after the end of discovery — the district court abused its discretion in finding that Pitts could no longer file a timely motion to certify a class.
C
Aside from dismissing Pitts’s entire action for lack of subject matter jurisdiction, the district court alternatively dismissed Count 2 of the complaint because, in its view, a Rule 23 class action could not coexist with a related collective action under the FLSA. Although the question has divided district courts in our circuit,
compare Misra v. Decision One Mortg. Co., LLC,
The district court faulted Pitts for failing to amend his complaint to reflect his waiver of the federal claims and for trying to oust the court of jurisdiction. Neither reason justifies the district court’s refusal to allow Pitts to relinquish his FLSA claims. First, a litigant may abandon a claim by communicating his desire to do so to the district court. Pitts did so in a written response to a motion to dismiss; he did not need to further amend his complaint. Second, a plaintiff may voluntarily abandon a claim even though his decision may affect the jurisdiction of a federal court; after all, the claim he abandons— once dismissed with prejudice — is the price he pays.
See Carnegie-Mellon Univ. v. Cohill,
D
We next turn to the district court’s reasons for dismissing Count 3 of the complaint.
Although Count 3 alleged a common law cause of action for breach of contract, the district court recast Count 3 as a statutory claim alleging a violation of Nev.Rev.Stat. § 608.100. Then, because Nevada courts have held that § 608.100 does not provide a private cause of action, the district court dismissed Count 3. A district court may not substitute a claim that is easy to dismiss for a claim actually asserted in the complaint and then dismiss the original claim unless the substitute claim somehow preempts the original claim. Because § 608.100 does not abrogate Nevada’s common law breach of contract action, we reverse the district court.
Nevada courts will not construe a statute as eliminating a common law cause of action unless the statute unambiguously requires that result.
See Hardy Cos., Inc. v. SNMARK, LLC,
Nevertheless, Terrible argues that
Sands Regent v. Valgardson,
E
Lastly, we address the district court’s dismissal of Count 3 of the complaint for lack of definiteness.
Before the district court dismissed Count 3 on the merits, it dismissed Count 3 because Pitts failed to specify in his complaint the hourly wage he was entitled to under his alleged employment contract with Terrible. However, after Pitts offered to amend his complaint to make this specific allegation, the court gave Pitts 15 days to amend. But the court then denied Pitts an opportunity to amend by dismissing Count 3 with prejudice before the expiration of the 15 days. Now that we have reversed the district court’s latter dismissal, we presume that Pitts will amend his complaint. Accordingly, we need not address the district court’s pleading specificity holding.
*1096 III
We hold that where a defendant makes an unaccepted Rule 68 offer of judgment that fully satisfies a named plaintiffs individual claim before the named plaintiff files a motion for class certification, the offer does not moot the case so long as the named plaintiff may still file a timely motion for class certification. Once filed, a timely motion for class certification relates back to the time of the filing of the complaint. We further hold that the district court abused its discretion in finding that Pitts could no longer file a timely motion of class certification; that it erred in refusing to allow Pitts to abandon his FLSA claims; and that it erred in holding that Nev.Rev.Stat. § 608.100 abrogates Pitts’s breach of contract claims.
REVERSED and REMANDED.
Notes
. We review the district court's determination of the timeliness of a motion for class certification for abuse of discretion.
See Probe v. State Teachers’ Ret. Sys.,
. Concurring, Justices Rehnquist and Stevens offered additional reasons why a settlement offer does not moot a class action complaint. Justice Rehnquist explained that a class action "is moot in the Art. Ill sense only if th[e] Court adopts a rule that an individual seeking to proceed as a class representative is required to accept a tender of only his individual claims.”
Roper,
. In so holding, we join the three other circuits that have considered the pre-certification effect of a Rule 68 offer of judgment on the mootness of a class action.
See Lucero v. Bureau of Collection Recovery, Inc.,
. Terrible argues that Pitts was untimely in seeking class certification because he waited nearly 9 months to depose "the person most knowledgeable at [Terrible] regarding the company's policy and practice for approving employee overtime.” We disagree. At the time Pitts conducted this deposition, his motion to compel was still pending before the district court. We fail to see how Pitts was untimely in seeking class certification because he awaited the resolution of a discovery motion which, if granted, would have allowed him to conduct a more meaningful deposition of a critical witness.
. The only circuit that has addressed this issue has held that Rule 23 class actions and FLSA collective actions may peacefully co
*1094
exist.
See Ervin v. OS Rest. Servs.,
. This is not to say that an employee can seek to enforce statutory provisions by framing them as implied contract terms.
See Baldonado,
