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Rule 23.Class Actions

Group IV: Parties · Last amended 2019 · Last verified July 14, 2026

In one sentenceRule 23 sets the requirements for suing or being sued as a class — enough members, common questions, typical claims, and adequate representation — and controls how a class gets certified, notified, settled, and represented by court-appointed counsel through final judgment.

Full Text of Rule 23

Text sizeJump to: (a) (b) (c) (d) (e) (f) (g) (h)

(a) PREREQUISITES. One or more members of a class may sue or be sued as representative parties on behalf of all members only if:
(1) the class is so numerous that joinder of all members is impracticable;
(2) there are questions of law or fact common to the class;
(3) the claims or defenses of the representative parties are typical of the claims or defenses of the class; and
(4) the representative parties will fairly and adequately protect the interests of the class.
(b) TYPES OF CLASS ACTIONS. A class action may be maintained if Rule 23(a) is satisfied and if:
(1) prosecuting separate actions by or against individual class members would create a risk of:
(A) inconsistent or varying adjudications with respect to individual class members that would establish incompatible standards of conduct for the party opposing the class; or
(B) adjudications with respect to individual class members that, as a practical matter, would be dispositive of the interests of the other members not parties to the individual adjudications or would substantially impair or impede their ability to protect their interests;
(2) the party opposing the class has acted or refused to act on grounds that apply generally to the class, so that final injunctive relief or corresponding declaratory relief is appropriate respecting the class as a whole; or
(3) the court finds that the questions of law or fact common to class members predominate over any questions affecting only individual members, and that a class action is superior to other available methods for fairly and efficiently adjudicating the controversy. The matters pertinent to these findings include:
(A) the class members’ interests in individually controlling the prosecution or defense of separate actions;
(B) the extent and nature of any litigation concerning the controversy already begun by or against class members;
(C) the desirability or undesirability of concentrating the litigation of the claims in the particular forum; and
(D) the likely difficulties in managing a class action.
(c) CERTIFICATION ORDER; NOTICE TO CLASS MEMBERS; JUDGMENT; ISSUES CLASSES; SUBCLASSES.
(1) Certification Order.
(A) Time to Issue. At an early practicable time after a person sues or is sued as a class representative, the court must determine by order whether to certify the action as a class action.
(B) Defining the Class; Appointing Class Counsel. An order that certifies a class action must define the class and the class claims, issues, or defenses, and must appoint class counsel under Rule 23(g).
(C) Altering or Amending the Order. An order that grants or denies class certification may be altered or amended before final judgment.
(2) Notice.
(A) For (b)(1) or (b)(2) Classes. For any class certified under Rule 23(b)(1) or (b)(2), the court may direct appropriate notice to the class.
(B) For (b)(3) Classes. For any class certified under Rule 23(b)(3)—or upon ordering notice under Rule 23(e)(1) to a class proposed to be certified for purposes of settlement under Rule 23(b)(3)—the court must direct to class members the best notice that is practicable under the circumstances, including individual notice to all members who can be identified through reasonable effort. The notice may be by one or more of the following: United States mail, electronic means, or other appropriate means. The notice must clearly and concisely state in plain, easily understood language:
(i) the nature of the action;
(ii) the definition of the class certified;
(iii) the class claims, issues, or defenses;
(iv) that a class member may enter an appearance through an attorney if the member so desires;
(v) that the court will exclude from the class any member who requests exclusion by a specified date;
(vi) the time and manner for requesting exclusion; and
(vii) the binding effect of a class judgment on members under Rule 23(c)(3).
(3) Judgment. Whether or not favorable to the class, the judgment in a class action must:
(A) for any class certified under Rule 23(b)(1) or (b)(2), include and describe those whom the court finds to be class members; and
(B) for any class certified under Rule 23(b)(3), include and specify or describe those to whom Rule 23(c)(2) notice was directed, who have not requested exclusion, and whom the court finds to be class members.
(4) Particular Issues. When appropriate, an action may be maintained as a class action with respect to particular issues.
(5) Subclasses. When appropriate, a class may be divided into subclasses that are each treated as a class under this rule.
(d) CONDUCTING THE ACTION.
(1) In General. In conducting an action under this rule, the court may issue orders that:
(A) determine the course of proceedings or prescribe measures to prevent undue repetition or complication in presenting evidence or argument;
(B) require—to protect class members and fairly conduct the action—giving appropriate notice to some or all class members of:
(i) any step in the action;
(ii) the proposed extent of the judgment; or
(iii) the members’ opportunity to signify whether they consider the representation fair and adequate, to intervene and present claims or defenses, or to otherwise come into the action;
(C) impose conditions on the representative parties or on intervenors;
(D) require that the pleadings be amended to eliminate allegations about representation of absent persons and that the action proceed accordingly; or
(E) deal with similar procedural matters.
(2) Combining and Amending Orders. An order under Rule 23(d)(1) may be altered or amended from time to time and may be combined with an order under Rule 16.
(e) SETTLEMENT, VOLUNTARY DISMISSAL, OR COMPROMISE. The claims, issues, or defenses of a certified class—or a class proposed to be certified for purposes of settlement—may be settled, voluntarily dismissed, or compromised only with the court’s approval. The following procedures apply to a proposed settlement, voluntary dismissal, or compromise:
(1) Notice to the Class.
(A) Information That Parties Must Provide to the Court. The parties must provide the court with information sufficient to enable it to determine whether to give notice of the proposal to the class.
(B) Grounds for a Decision to Give Notice. The court must direct notice in a reasonable manner to all class members who would be bound by the proposal if giving notice is justified by the parties’ showing that the court will likely be able to:
(i) approve the proposal under Rule 23(e)(2); and
(ii) certify the class for purposes of judgment on the proposal.
(2) Approval of the Proposal. If the proposal would bind class members, the court may approve it only after a hearing and only on finding that it is fair, reasonable, and adequate after considering whether:
(A) the class representatives and class counsel have adequately represented the class;
(B) the proposal was negotiated at arm’s length;
(C) the relief provided for the class is adequate, taking into account:
(i) the costs, risks, and delay of trial and appeal;
(ii) the effectiveness of any proposed method of distributing relief to the class, including the method of processing class-member claims;
(iii) the terms of any proposed award of attorney’s fees, including timing of payment; and
(iv) any agreement required to be identified under Rule 23(e)(3); and
(D) the proposal treats class members equitably relative to each other.
(3) Identifying Agreements. The parties seeking approval must file a statement identifying any agreement made in connection with the proposal.
(4) New Opportunity to Be Excluded. If the class action was previously certified under Rule 23(b)(3), the court may refuse to approve a settlement unless it affords a new opportunity to request exclusion to individual class members who had an earlier opportunity to request exclusion but did not do so.
(5) Class-Member Objections.
(A) In General. Any class member may object to the proposal if it requires court approval under Rule 23(e). The objection must state whether it applies only to the objector, to a specific subset of the class, or to the entire class, and also state with specificity the grounds for the objection.
(B) Court Approval Required for Payment in Connection with an Objection. Unless approved by the court after a hearing, no payment or other consideration may be provided in connection with:
(i) forgoing or withdrawing an objection, or
(ii) forgoing, dismissing, or abandoning an appeal from a judgment approving the proposal.
(C) Procedure for Approval After an Appeal. If approval under Rule 23(e)(5)(B) has not been obtained before an appeal is docketed in the District of Columbia Court of Appeals, the procedure of Rule 62.1 applies while the appeal remains pending.
(f) APPEALS. An appeal from an order of the Superior Court granting or denying class action certification under this rule may be permitted in accordance with D.C. Code § 11- 721 (d) (2012 Repl.) and the District of Columbia Court of Appeals Rules.
(g) CLASS COUNSEL.
(1) Appointing Class Counsel. Unless a statute provides otherwise, a court that certifies a class must appoint class counsel. In appointing class counsel, the court:
(A) must consider:
(i) the work counsel has done in identifying or investigating potential claims in the action;
(ii) counsel's experience in handling class actions, other complex litigation, and the types of claims asserted in the action;
(iii) counsel's knowledge of the applicable law; and
(iv) the resources that counsel will commit to representing the class;
(B) may consider any other matter pertinent to counsel's ability to fairly and adequately represent the interests of the class;
(C) may order potential class counsel to provide information on any subject pertinent to the appointment and to propose terms for attorney's fees and nontaxable costs;
(D) may include in the appointing order provisions about the award of attorney's fees or nontaxable costs under Rule 23(h); and
(E) may make further orders in connection with the appointment.
(2) Standard for Appointing Class Counsel. When one applicant seeks appointment as class counsel, the court may appoint that applicant only if the applicant is adequate under Rule 23(g)(1) and (4). If more than one adequate applicant seeks appointment, the court must appoint the applicant best able to represent the interests of the class.
(3) Interim Counsel. The court may designate interim counsel to act on behalf of a putative class before determining whether to certify the action as a class action.
(4) Duty of Class Counsel. Class counsel must fairly and adequately represent the interests of the class.
(h) ATTORNEY’S FEES AND NONTAXABLE COSTS. In a certified class action, the court may award reasonable attorney's fees and nontaxable costs that are authorized by law or by the parties' agreement. The following procedures apply:
(1) A claim for an award must be made by motion under Rule 54(d)(2), subject to the provisions of Rule 23(h), at a time the court sets. Notice of the motion must be served on all parties and, for motions by class counsel, directed to class members in a reasonable manner.
(2) A class member, or a party from whom payment is sought, may object to the motion.
(3) The court may hold a hearing and must find the facts and state its legal conclusions under Rule 52(a).
(4) The court may refer issues related to the amount of the award to a special master or a magistrate judge, as provided in Rule 54(d)(2)(D).

Comments

2019 Amendments:

This rule incorporates the 2018 federal amendments to Federal Rule of Civil Procedure 23, but maintains the local distinction in section (f) addressing appeals.

2017 Amendments:

This rule is identical to Federal Rule of Civil Procedure 23, as amended in 2007 and 2009, except that 1) language in subsection (c)(2)(B)(v) clarifies that there is a deadline for requesting exclusion from the class; and 2) in accordance with Ford v. ChartOne, 834 A.2d 875 (D.C. 2003), section (f) has been modified to indicate that the filing of an appeal is governed by D.C. Code § 11-721 (d) (2012 Repl.) and the appellate rules. The provisions allowing the court to shift the cost of notice, which were unique to the Superior Court rule, have been deleted.

If a class action is settled and residual funds remain after all identified members of the class have received their proper distribution, the court may turn to conventional principles of equity to resolve the case. Traditionally, there are four ways by which a court may distribute the residual funds: 1) pro rata distribution to the class members; 2) reversion to the defendant; 3) escheat to the government; and 4) cy pres distribution. See, e.g., Powell v. Georgia-Pacific Corp., 119 F.3d 703, 706 (8th Cir. 1997). It is generally understood that “neither party has a legal right to the unclaimed funds.” Id. See also Diamond Chem. Co. v. Akzo Nobel Chems. B.V., 517 F. Supp. 2d 212, 217 (D.D.C. 2007). When determining which method of distribution is most appropriate, the court’s choice “should be guided by the objectives of the underlying statute and the interests of the silent class members.” Six Mexican Workers v. Ariz. Citrus Growers, 904 F.2d 1301, 1307 (9th Cir. 1990).

In the case of a cy pres distribution of the residual funds, the court should first consider whether the funds can be distributed in a manner that is closely related to the original purpose. See Superior Beverage Co. v. Owens-Illinois, Inc., 827 F. Supp. 477, 477-80 (N.D. Ill. 1993). If no such distribution is possible, the court may use its equitable powers to consider “other public interest purposes by educational, charitable, and other public service organizations,” including “charitable donations . . . to support non-profit provision of pro bono legal services.” Jones v. Nat’l Distillers, 56 F. Supp. 2d 355, 359 (S.D.N.Y. 1999) (citing Superior Beverage Co., 827 F. Supp. at 478-79) (internal quotation marks omitted). The court may solicit applications for cy pres grants by public notice and, if necessary, hold hearings to give the applicants a chance to be heard. Alternatively, the court may allocate some or all of the residual funds to an organization such as the D.C. Bar Foundation or other local bar associations that have already implemented procedures for the distribution of funds to public service organizations.

Comment:

Rule 23 is identical to Federal Rule of Civil Procedure 23 except for certain changes in subsections (c)(1) and (c)(2) which specifically authorize the judge to shift the costs of notice to the defendant, in whole or in part, under limited circumstances. In order to make this determination relating to costs of notice, the judge is further authorized to conduct a hearing, pursuant to Rule 23-I(c)(3), at which all relevant factors, including the likelihood of success on the merits, can be considered. The amendment, while essentially retaining the previous Superior Court procedure, was made necessary by Eisen v. Carlisle & Jacquelin, 417 U.S. 156, 94 S.Ct. 2140, 40 L.Ed.2d 732 (1974) which held that under the language of Fed. R. Civ. P. 23, the costs of notice could not be shifted to the defendant, except perhaps in cases involving a fiduciary, and, the Court could not make a preliminary determination of the merits of a case. The specific changes are the deletion of the phrase, “As soon as practicable ...” in the 1st sentence of subsection (c)(1) and the addition of the last sentence in subsection (c)(2).

Plain-English Summary

Before any class action can proceed, Rule 23(a) requires four things: the class must be so numerous that joining every member individually would be impracticable, there must be questions of law or fact common to the class, the representative parties' claims or defenses must be typical of the class as a whole, and the representative parties must adequately protect the interests of the class. Only once all four are satisfied does Rule 23(b) ask which of three categories the case falls into: cases where separate lawsuits would risk inconsistent rulings that create incompatible standards of conduct for the opposing party, or would as a practical matter dispose of absent members' interests; cases where the opposing party has acted or refused to act on grounds affecting the whole class, making classwide injunctive or declaratory relief appropriate; or cases where common questions predominate over individual ones and a class action is the superior way to resolve the controversy, weighed against factors like members' interest in controlling their own suits, existing related litigation, the desirability of one forum, and how manageable the class action would be.

Rule 23(c) requires the court to decide certification at an early practicable point, defining the class and its claims, issues, or defenses and appointing class counsel; that order can be altered or amended before final judgment. Classes certified under the third category must receive the best notice practicable, including individual notice to identifiable members by mail, electronic means, or other appropriate methods, written in plain language covering the nature of the action, the class definition, the claims or defenses at stake, the right to appear through one's own attorney, the right and deadline to opt out, and the binding effect of the eventual judgment. A case can also be certified as to particular issues only, or divided into subclasses, and the final judgment must identify who is bound by it.

Rule 23(d) lets the court manage the litigation with orders covering the course of proceedings, additional notice to class members about key developments, conditions on the representative parties, or amending the pleadings to drop improper allegations about absent members — and these can be combined with ordinary scheduling orders. Because a class member's rights can be resolved without that member ever appearing individually, Rule 23(e) requires court approval before a certified class's claims can be settled, dismissed, or compromised. The parties must give the court enough information to decide whether notice to the class is warranted, and if a proposed settlement is likely to be approved and the class likely certified, notice must go out. Approval itself requires a hearing and findings that the representatives and class counsel adequately represented the class, that the deal was negotiated at arm's length, that the relief is adequate given the costs and risks of continued litigation, and that the proposal treats members equitably relative to one another; class members may object with specificity, and no one can be paid to withdraw an objection or drop an appeal without the court's sign-off.

Rule 23(f) allows an appeal from a Superior Court order granting or denying certification under the procedure the District of Columbia Code and the Court of Appeals rules set out for that kind of interlocutory review. Rule 23(g) requires the court to appoint class counsel, considering the work already invested in identifying and investigating the claims, relevant experience, knowledge of the applicable law, and the resources counsel will commit, and it may name interim counsel before certification is even decided. Rule 23(h) lets the court award reasonable attorney's fees and costs in a certified class action by motion, with notice to all parties and, for class counsel's own fee request, to the class itself, followed by findings of fact and conclusions of law and, if needed, referral of the amount to a master or magistrate judge.

Frequently Asked Questions

What four things does a class have to show before it can be certified?

Rule 23(a) requires numerosity — enough members that joining them individually would be impracticable — commonality of law or fact, typicality between the representative parties' claims and the class's, and adequate representation of the class's interests by those representative parties.

What are the three types of class actions available under Rule 23(b)?

A class can proceed where separate suits would risk inconsistent rulings or would practically dispose of absent members' interests, where the opposing party's uniform conduct makes classwide injunctive or declaratory relief appropriate, or where common questions predominate over individual ones and a class action is the superior method of resolving the dispute.

What does the class notice have to tell members in a class certified under the predominance category?

Rule 23(c)(2)(B) requires the notice, sent by mail, electronic means, or other appropriate methods, to state in plain language the nature of the action, the class definition, the claims or defenses involved, the right to appear through one's own attorney, the right and deadline to request exclusion, and the binding effect of a class judgment.

Can a class action settle without every member individually agreeing?

Yes, but only with court approval. Rule 23(e) requires a hearing and findings that the settlement is adequate and treats class members equitably, and, for classes previously certified for damages, may require a renewed opportunity for members to opt out.

How does an appeal from a class certification decision work in DC Superior Court?

Rule 23(f) allows an appeal from an order granting or denying certification, following the procedure set out in the District of Columbia Code's provision on that kind of interlocutory appeal and the District of Columbia Court of Appeals Rules.

Source & verification. Rule text and official Comments are reproduced verbatim from the District of Columbia Superior Court Rules of Civil Procedure, adopted by the Superior Court of the District of Columbia. Last verified July 14, 2026. · Official source
Also known as: dc class action requirementsclass certification rule 23 dcclass action settlement approval dc superior courtclass counsel appointment dcappeal class certification order dc