diff --git a/src/sdk/builders/tasks/__tests__/newBuilders.test.ts b/src/sdk/builders/tasks/__tests__/newBuilders.test.ts
index 391f7b0a..7ea2b2eb 100644
--- a/src/sdk/builders/tasks/__tests__/newBuilders.test.ts
+++ b/src/sdk/builders/tasks/__tests__/newBuilders.test.ts
@@ -5,6 +5,7 @@ import { humanTask } from "../humanTask";
 import { httpPollTask } from "../httpPoll";
 import { waitForWebhookTask } from "../waitForWebhook";
 import { getDocumentTask } from "../getDocument";
+import { exclusiveJoinTask } from "../exclusiveJoin";
 
 describe("startWorkflowTask", () => {
   it("Should generate a startWorkflow task with minimal args", () => {
@@ -448,3 +449,24 @@ describe("getDocumentTask", () => {
     });
   });
 });
+
+describe("exclusiveJoinTask", () => {
+  it("Should generate an exclusiveJoin task", () => {
+    const result = exclusiveJoinTask("exJoin", ["caseA", "caseB"]);
+    expect(result).toEqual({
+      name: "exJoin",
+      taskReferenceName: "exJoin",
+      type: "EXCLUSIVE_JOIN",
+      joinOn: ["caseA", "caseB"],
+      defaultExclusiveJoinTask: undefined,
+      inputParameters: {},
+      optional: undefined,
+    });
+  });
+
+  it("Should set defaultExclusiveJoinTask and optional", () => {
+    const result = exclusiveJoinTask("exJoin", ["caseA"], ["defaultTask"], true);
+    expect(result.defaultExclusiveJoinTask).toEqual(["defaultTask"]);
+    expect(result.optional).toBe(true);
+  });
+});
diff --git a/src/sdk/builders/tasks/exclusiveJoin.ts b/src/sdk/builders/tasks/exclusiveJoin.ts
new file mode 100644
index 00000000..3060196b
--- /dev/null
+++ b/src/sdk/builders/tasks/exclusiveJoin.ts
@@ -0,0 +1,17 @@
+import type { WorkflowTask } from "../../../open-api";
+import { TaskType } from "../../../open-api";
+
+export const exclusiveJoinTask = (
+  taskReferenceName: string,
+  joinOn: string[],
+  defaultExclusiveJoinTask?: string[],
+  optional?: boolean
+): WorkflowTask => ({
+  name: taskReferenceName,
+  taskReferenceName,
+  type: TaskType.EXCLUSIVE_JOIN,
+  joinOn,
+  defaultExclusiveJoinTask,
+  inputParameters: {},
+  optional,
+});
diff --git a/src/sdk/builders/tasks/index.ts b/src/sdk/builders/tasks/index.ts
index 2b296a95..8ef37ecb 100644
--- a/src/sdk/builders/tasks/index.ts
+++ b/src/sdk/builders/tasks/index.ts
@@ -2,6 +2,7 @@ export * from "./doWhile";
 export * from "./dynamic";
 export * from "./dynamicFork";
 export * from "./event";
+export * from "./exclusiveJoin";
 export * from "./forkJoin";
 export * from "./getDocument";
 export * from "./http";