3.1 Joinder of Claims, Parties, Interpleader & Class Actions

Joinder of Claims, Parties, Interpleader & Class Actions

Joinder rules in the Federal Rules of Civil Procedure (FRCP) govern how many claims and parties can be combined into a single federal civil lawsuit. On the Multistate Bar Examination (MBE) and Multistate Essay Examination (MEE), joinder questions test a two-step analytical framework: (1) Does the Federal Rule of Civil Procedure authorize the joinder? (2) Does the federal court possess subject matter jurisdiction (Federal Question, Diversity of Citizenship, or Supplemental Jurisdiction under 28 U.S.C. § 1367) over the joined claim or party?

A joinder rule provides procedural permission, but it never confers subject matter jurisdiction on its own.

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1. Joinder of Claims: FRCP Rule 18 & Rule 13

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|                        FEDERAL CLAIM JOINDER SPECTRUM                       |
|                                                                             |
|   [RULE 18(a): CLAIM JOINDER]                                               |
|   - Any claim against existing opposing party                               |
|   - Unrelated claims PERMITTED (no same transaction/occurrence requirement) |
|   - Each claim must have SMJ (Diversity, FQ, or § 1367)                     |
|                                                                             |
|   [RULE 13(a): COMPULSORY COUNTERCLAIM]                                     |
|   - Arises from SAME transaction or occurrence (T/O)                        |
|   - MUST be asserted in answer or permanently WAIVED/BARRED                 |
|   - Automatically falls within § 1367(a) Supplemental Jurisdiction          |
|                                                                             |
|   [RULE 13(b): PERMISSIVE COUNTERCLAIM]                                     |
|   - Arises from UNRELATED transaction or occurrence                         |
|   - May be asserted now or sued upon later in a separate action             |
|   - Requires INDEPENDENT subject matter jurisdiction (cannot use § 1367)    |
|                                                                             |
|   [RULE 13(g): CROSSCLAIM]                                                  |
|   - Asserted against a CO-PARTY (e.g., D1 vs D2 or P1 vs P2)                |
|   - Must arise from SAME transaction or occurrence as main claim            |
|   - Always PERMISSIVE initially; falls within § 1367(a) Supplemental Juris. |
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FRCP Rule 18(a): Unlimited Claim Joinder

A party asserting an original claim, counterclaim, crossclaim, or third-party claim may join as many claims as it has against an opposing party, even if the claims are completely unrelated legally and factually.

• No Transactional Nexus Required: Unlike party joinder, claim joinder under Rule 18 does not require the claims to arise out of the same transaction or occurrence.
• Jurisdictional Hook: Each joined claim must independently satisfy federal subject matter jurisdiction. A plaintiff may aggregate all claims against a single defendant to meet the $75,000.01 amount-in-controversy requirement for diversity jurisdiction under 28 U.S.C. § 1332(a).

FRCP Rule 13: Counterclaims and Crossclaims

[!IMPORTANT] The Compulsory Counterclaim Bar: If a defendant fails to plead a compulsory counterclaim in their answer, they cannot file a separate lawsuit on that claim later in federal or state court. The doctrine of res judicata (claim preclusion) and Rule 13(a) operate together to bar the unasserted claim. Exceptions apply only if the claim required joining an indispensable third party over whom the court lacked personal jurisdiction, or if the action was in rem/quasi in rem.

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2. Joinder of Parties: Permissive (Rule 20) vs. Required (Rule 19)

FRCP Rule 20: Permissive Party Joinder

Plaintiffs may join together in one action, or join multiple defendants, if the claims satisfy a two-prong conjunctive test:

1. Same Transaction or Occurrence: The claims arise out of the same transaction, occurrence, or series of transactions or occurrences; AND
2. Common Question: At least one common question of law or fact will arise in the action.

Jurisdictional Limit in Diversity Cases: In diversity actions, permissive joinder of plaintiffs cannot violate complete diversity. Under 28 U.S.C. § 1367(b), supplemental jurisdiction is excluded over claims by plaintiffs joined under Rule 20 if joining them would destroy complete diversity.

FRCP Rule 19: Required Joinder of Parties (Necessary & Indispensable)

When an absentee is not joined in a pending action, the court applies a structured three-step analytical framework:

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|                      RULE 19 THREE-STEP JOINDER ANALYSIS                    |
|                                                                             |
|   [STEP 1: IS ABSENTEE "REQUIRED / NECESSARY" UNDER RULE 19(a)?]            |
|   - Without absentee, court CANNOT accord COMPLETE RELIEF among parties, OR |
|   - Absentee's interest may be PRACTICALLY IMPAIRED / IMPEDED, OR           |
|   - Existing parties face substantial risk of MULTIPLE / INCONSISTENT       |
|     obligations.                                                            |
|                                    |                                        |
|                                    v                                        |
|   [STEP 2: IS JOINDER "FEASIBLE"?]                                          |
|   - Is absentee subject to PERSONAL JURISDICTION?                           |
|   - Does joinder PRESERVE SUBJECT MATTER JURISDICTION (no diversity destroy)?|
|   - If YES: Court ORDERS absentee joined.                                   |
|   - If NO: Proceed to Step 3.                                               |
|                                    |                                        |
|                                    v                                        |
|   [STEP 3: SHOULD CASE PROCEED OR BE DISMISSED UNDER RULE 19(b)?]          |
|   Balance Four Equity Factors (Is Absentee "Indispensable"?):               |
|   1. Extent of prejudice to absentee and existing parties                   |
|   2. Extent to which prejudice can be lessened by protective provisions     |
|   3. Adequacy of judgment rendered in person's absence                      |
|   4. Whether plaintiff has an adequate remedy if action is dismissed        |
|   - If dismissal required ---> Case dismissed for failure to join (Rule 12(b)(7))|
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[!WARNING] Joint Tortfeasors Are NOT Required Parties: On the MBE, a classic distractor asserts that joint tortfeasors with joint and several liability are required/necessary parties under Rule 19. Under long-standing Supreme Court precedent (Temple v. Synthes Corp.), joint tortfeasors are merely permissive parties under Rule 20, never required parties under Rule 19. A plaintiff is free to sue one, some, or all joint tortfeasors.

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3. Third-Party Practice / Impleader: FRCP Rule 14

Impleader allows a defending party (acting as a third-party plaintiff) to bring in a non-party (third-party defendant, TPD) who is or may be liable to the defending party for all or part of the claim against it.

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|                         RULE 14 IMPLEADER STRUCTURE                         |
|                                                                             |
|       [PLAINTIFF (P)]  <========== Sues Main Claim ==========>  [DEFENDANT (D)]|
|                                                                      |      |
|                                                                 Impleads    |
|                                                               (Rule 14)     |
|                                                               (Indemnity/   |
|                                                               Contribution) |
|                                                                      |      |
|                                                                      v      |
|                                                         [THIRD-PARTY DEF.   |
|                                                              (TPD)]         |
|                                                                             |
|   - D claims: "If I am liable to P, TPD is derivatively liable to ME."      |
|   - TPD's citizenship does NOT destroy diversity between P and D.           |
|   - D has 14 days after serving original answer to implead without leave.    |
|   - P cannot assert direct claim against TPD unless independent SMJ exists. |
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Core Rules of Rule 14 Impleader:

1. Derivative Liability Only: Impleader is strictly limited to claims based on indemnity (contractual or common law) or contribution (among joint tortfeasors). A defendant cannot implead a third party by arguing "It was not me, it was entirely the third party who is directly liable to plaintiff." That is a defense, not an impleader.
2. Timing: A defendant may file a third-party complaint as of right within 14 days after serving its original answer. Beyond 14 days, court permission (leave of court) is required upon motion.
3. Subject Matter Jurisdiction & 28 U.S.C. § 1367(b):
   • D vs. TPD: The third-party claim falls squarely within § 1367(a) supplemental jurisdiction because it shares a common nucleus of operative fact with the main claim. The citizenship of the TPD does not affect the diversity between P and D.
   • P vs. TPD (Direct Claim): If the plaintiff asserts a direct claim against the newly joined TPD, § 1367(b) bars supplemental jurisdiction in diversity-only cases if P and TPD are co-citizens. P's claim against TPD must independently satisfy federal subject matter jurisdiction.

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4. Intervention: FRCP Rule 24

Intervention permits a non-party absentee to voluntarily join a pending federal lawsuit.

| Dimension | Intervention of Right (Rule 24(a)) | Permissive Intervention (Rule 24(b)) | | :--- | :--- | :--- | :--- | | Standard / Grounds | 1. Timely application;<br>2. Non-party claims an interest relating to the property or transaction;<br>3. Disposition may practically impair or impede ability to protect interest;<br>4. Existing parties do not adequately represent that interest. | 1. Timely application;<br>2. Conditional statutory right OR applicant's claim/defense shares a common question of law or fact with main action. | | Court Discretion | Mandatory; court must grant if all four elements are satisfied. | Discretionary; court balances delay, prejudice, and judicial economy. | | Jurisdictional Restriction | In diversity cases, an intervening plaintiff or defendant cannot destroy complete diversity under § 1367(b). | Must possess an independent jurisdictional basis (no supplemental jurisdiction under § 1367(b)). |

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5. Interpleader: Rule 22 vs. Statutory Interpleader (§ 1335)

Interpleader is an equitable device allowing a stakeholder holding property or funds (the "stake") subject to competing, inconsistent claims to force all claimants into a single proceeding to resolve their rights.

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6. Class Actions: FRCP Rule 23 & CAFA

In a class action, one or more named representative parties sue or are sued on behalf of an entire class of similarly situated individuals.

+-----------------------------------------------------------------------------+
|                       CLASS ACTION CERTIFICATION BLUEPRINT                  |
|                                                                             |
|   [STEP 1: SATISFY ALL FOUR RULE 23(a) PREREQUISITES]                       |
|   1. NUMEROSITY    ---> Joinder of all members is impracticable (40+ members)|
|   2. COMMONALITY   ---> Common questions of law or fact across class        |
|   3. TYPICALITY    ---> Rep's claims/defenses typical of class members      |
|   4. ADEQUACY      ---> Rep and class counsel fairly and adequately protect |
|                         class interests (no conflicts of interest)          |
|                                    |                                        |
|                                    v                                        |
|   [STEP 2: QUALIFY UNDER AT LEAST ONE RULE 23(b) CATEGORY]                  |
|   - Rule 23(b)(1): Incompatible standards / Impairment of absentee interests|
|   - Rule 23(b)(2): Injunctive or Declaratory relief (Civil rights; NO $)    |
|   - Rule 23(b)(3): DAMAGES CLASS                                            |
|     * PREDOMINANCE: Common questions predominate over individual issues     |
|     * SUPERIORITY: Class action is superior to other adjudication methods   |
|     * MANDATORY NOTICE & OPT-OUT: Best notice practicable; right to opt out |
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Types of Class Actions Under Rule 23(b):

1. Rule 23(b)(1) Anti-Prejudice Class: Risk of inconsistent adjudications establishing incompatible standards of conduct for the opposing party, or individual adjudications substantially impairing other members' ability to protect their interests (e.g., limited fund).
2. Rule 23(b)(2) Injunctive / Declaratory Class: The opposing party acted or refused to act on grounds generally applicable to the class, making final injunctive or corresponding declaratory relief appropriate for the whole class (e.g., desegregation, institutional employment discrimination). Individual monetary damages cannot predominate.
3. Rule 23(b)(3) Damages Class: Requires two distinct findings:
   • Predominance: Common questions of law or fact predominate over questions affecting only individual members.
   • Superiority: Class action is superior to other available methods for fairly and efficiently adjudicating the controversy.
   • Mandatory Individual Notice & Opt-Out (Rule 23(c)(2)(B)): The court must direct to class members the best notice practicable under the circumstances, including individual notice to all members who can be identified through reasonable effort. Notice must inform members of their right to opt out and be excluded from the binding judgment.

Class Action Fairness Act of 2005 (CAFA: 28 U.S.C. § 1332(d))

CAFA greatly expands federal subject matter jurisdiction over large interstate class actions:

• Minimal Diversity: Any member of a class of plaintiffs is a citizen of a state different from any defendant.
• Aggregate Amount in Controversy: All class members' claims are aggregated and must exceed $5,000,000 (exclusive of interest and costs).
• Class Size: Total number of proposed class members must be 100 or more.
• Removal: Any defendant may remove a CAFA class action to federal court without the consent of co-defendants, and the 1-year limitation on diversity removal does not apply.