Multiple Claims
Joinder of claims is the most permissive rule in the pleading toolbox, and that is exactly where it traps people.
9. Multiple Claims
A complaint filed in federal court may include as many claims as a plaintiff has against a defendant, as long as the court has subject matter jurisdiction over each claim. Rule 18.
- Although this rule allows plaintiff s to join multiple claims against a defendant, the rule does not provide an escape from the requirement of subject matter jurisdiction. The court must have subject matter jurisdiction over each claim.
- An individual plaintiff , however, may aggregate their claims against an individual defendant to satisfy the amount-in-controversy requirement for diversity jurisdiction.
- Claims against a single defendant need not relate to the same incident; they can be completely unrelated as long as the court has subject matter jurisdiction over each claim.
- plaintiff s may allege inconsistent claims as alternative bases for relief.
- If a federal court has jurisdiction over one claim by a plaintiff against a defendant, it may exercise jurisdiction over additional claims by the plaintiff against the same defendant that is part of the same case or controversy, even if that claim would not satisfy subject matter jurisdiction standing alone.
- This is known as “supplemental jurisdiction.” 28 USC § 1367.
- Courts often use the phrase “common nucleus of operative fact” to describe claims that are part of the same case or controversy.
- The Nevada FLE does not test understanding of the situations in which federal courts may exercise their discretion to decline supplemental jurisdiction.
- Nor does the Nevada FLE test application of supplemental jurisdiction in the context of multiple plaintiff s or defendants.
- The Nevada FLE does not require test-takers to recall details of federal court subject matter jurisdiction beyond the basics of diversity jurisdiction, federal question jurisdiction, and basic supplemental jurisdiction. For example, the exam does not cover the Class Action Fairness Act.
A single plaintiff may join as many claims as they have against a single defendant, related or not, even contradictory ones, but the court must independently have subject matter jurisdiction over each claim. Join freely; jurisdiction always.
Joinder of claims is the most permissive rule in the pleading toolbox, and that is exactly where it traps people. The rule lets a single plaintiff pile on as many claims as they have against a single defendant. The claims do not have to be related. A plaintiff can sue one defendant for a car crash and, in the very same complaint, for an unpaid loan that has nothing to do with the crash. The plaintiff can even plead claims that contradict each other as alternative theories, asking for one result or, if that fails, another.
None of that is the catch. The catch is jurisdiction. Permission to join claims is not permission to skip subject matter jurisdiction. The court must independently have subject matter jurisdiction over each claim a plaintiff joins. There are two ways a joined claim gets into federal court.
- 1The claim stands on its own, because it raises a federal question or sits in a diversity case where the amounts can be aggregated. An individual plaintiff may aggregate the dollar value of multiple claims against a single defendant to clear the amount-in-controversy threshold.
- 2The claim rides in on supplemental jurisdiction. If the court already has jurisdiction over one claim by the plaintiff against the defendant, it may hear an additional claim by the same plaintiff against the same defendant that arises from the same case or controversy, the same common nucleus of operative fact, even though that added claim could not get into federal court on its own.
On the aggregation point, watch the home context: the amount-in-controversy requirement belongs to diversity jurisdiction only. It is not a hurdle for a federal-question claim, and a distractor that imposes a dollar floor on a federal-question case is borrowing a rule from the wrong place.
Two throwaway facts never defeat joinder: that the claims are unrelated and that the claims contradict each other. Both are expressly allowed. And the amount-in-controversy floor lives in diversity only; a distractor that bolts it onto a federal-question case is borrowing a rule from the wrong place.
The exam does not test the court's discretion to decline supplemental jurisdiction, and it does not test supplemental jurisdiction across multiple plaintiffs or multiple defendants. The tested version is one plaintiff, one defendant, claims sharing a common nucleus.
"Join freely, jurisdiction always."
A plaintiff may stack any number of claims, related or not, even contradictory ones, against one defendant, but the court still needs subject matter jurisdiction over each claim.
Two free passes into federal court: the claim qualifies on its own (federal question, or diversity where one plaintiff may aggregate dollar amounts against one defendant), or it shares a common nucleus of operative fact with a claim already in (supplemental jurisdiction).
Two throwaway facts that never defeat joinder: "the claims are unrelated" and "the claims contradict each other."
Amount-in-controversy is a diversity-only gate, never a federal-question gate.
The tested frame is one plaintiff, one defendant.
A driver sues a contractor in federal court. The driver and the contractor are citizens of different states. In one complaint the driver brings two unrelated claims against the contractor: one for a car collision worth fifty thousand dollars, and one for breach of an unrelated home-repair contract worth forty thousand dollars. The contractor moves to dismiss, arguing the claims are unrelated and that neither one alone exceeds the diversity threshold.
The joinder stands. Now flip the facts: suppose the second claim arose under federal law and the contractor argues it must independently exceed the diversity dollar floor. That argument fails, because amount-in-controversy is a diversity requirement and does not apply to a federal-question claim at all.
An option bolts the diversity amount-in-controversy floor onto a federal-question claim, or stretches supplemental jurisdiction across multiple plaintiffs or defendants.
Amount-in-controversy is a diversity-only requirement; the tested supplemental-jurisdiction frame is one plaintiff against one defendant.A "No, may not be joined" answer resting on the claims being unrelated or contradicting each other.
Unrelated and inconsistent claims may both be joined; the only real limit is subject matter jurisdiction over each.An option that says joining the claims itself supplies or excuses subject matter jurisdiction.
The joinder rule provides no escape from the jurisdiction requirement; each claim needs jurisdiction independently or through the supplemental rule.A distractor whose falsity depends on treating amount-in-controversy as a hurdle for a federal-question claim.
Structural understanding that amount-in-controversy is a diversity-only feature of federal jurisdiction, independent of federal-question cases.the stem hands you a single plaintiff bringing two or more claims against a single defendant in federal court, and then dares you with either (a) the claims look unrelated or even contradictory, or (b) one claim could not get into federal court by itself.
The instant you see stacked claims, run two checks.
joinder is free: unrelated and inconsistent claims may both be joined, so any answer that blocks joinder for being unrelated or contradictory is a distractor.
jurisdiction is mandatory: each claim needs its own subject matter jurisdiction, supplied either by aggregating dollar amounts in a diversity case (one plaintiff, one defendant) or by supplemental jurisdiction when the added claim shares a common nucleus of operative fact with a claim already properly in federal court.
If you see an amount-in-controversy floor attached to a federal-question claim, that is the wrong-context trap; the dollar floor lives in diversity only.
A homeowner and a roofer are citizens of different states. In a single complaint filed in federal court, the homeowner brings two claims against the roofer that arise from entirely separate events: one claim alleges defective work on a roof and seeks sixty thousand dollars, and an unrelated claim alleges that the roofer failed to repay a personal loan and seeks twenty thousand dollars. The roofer moves to dismiss, arguing that the two claims arise from different events and therefore cannot be brought together in one suit.
Is the court likely to allow the homeowner to join both claims?
A consumer files a complaint in federal court against a manufacturer, asserting a single claim that arises under a federal product-safety law. In the same complaint the consumer adds a second claim against the same manufacturer for an injury caused by the same product, a claim that arises only under state law and could not by itself be brought in federal court. The two claims share the same set of facts about how the product was made and how it failed. The manufacturer asks the court to dismiss the state-law claim for lack of subject matter jurisdiction.
Is the court likely to hear the added state-law claim?
A supplier sues a distributor in federal court over a failed shipment. The supplier is unsure whether the parties formed a binding contract, so in one complaint the supplier pleads two claims in the alternative against the distributor: one claim asserts breach of an enforceable contract, and the other asserts that no contract existed and seeks recovery for the value of goods delivered. The two theories cannot both ultimately be true. The court independently has subject matter jurisdiction over each claim. The distributor argues the complaint must be dismissed because the supplier has taken contradictory positions.
Is the court likely to permit the supplier to plead both claims?
A borrower brings a complaint in federal court against a lender. The first claim arises under a federal lending statute and is properly within the court's jurisdiction. The borrower adds a second claim against the same lender for an unrelated property dispute that arises only under state law, involves a different transaction, and shares no facts with the lending claim. The borrower argues the court should hear the property claim because it has already taken jurisdiction over the lending claim.
Is the court likely to exercise supplemental jurisdiction over the unrelated property claim?
A passenger and an airline are citizens of different states. In federal court, the passenger brings two unrelated claims against the airline based on two different trips: one claim seeks fifty thousand dollars and the other seeks forty thousand dollars. Neither claim arises under federal law, and neither claim alone exceeds the diversity dollar threshold. The airline moves to dismiss for lack of subject matter jurisdiction, contending that because no single claim crosses the threshold, the suit cannot proceed.
Is the court likely to have subject matter jurisdiction over the suit?