diff --git a/src/controllers/07-task-controller.ts b/src/controllers/07-task-controller.ts
index 6e22f77..557445f 100644
--- a/src/controllers/07-task-controller.ts
+++ b/src/controllers/07-task-controller.ts
@@ -499,7 +499,30 @@ export class TaskActionController extends Controller {
 
   @Post("complete")
   @Security("keycloak")
-  async completeTaskOrder(@Request() req: RequestWithUser, @Path() taskOrderId: string) {}
+  async completeTaskOrder(
+    @Request() req: RequestWithUser,
+    @Path() taskOrderId: string,
+    @Query() submitUserId?: string,
+  ) {
+    submitUserId = submitUserId ?? req.user.sub;
+
+    const record = await prisma.taskOrder.findFirst({ where: { id: taskOrderId } });
+
+    if (!record) throw notFoundError("Task Order");
+
+    await prisma.$transaction([
+      prisma.task.updateMany({
+        where: {
+          taskOrderId: taskOrderId,
+          taskStatus: TaskStatus.Validate,
+          requestWorkStep: { responsibleUserId: submitUserId },
+        },
+        data: {
+          taskStatus: TaskStatus.Complete,
+        },
+      }),
+    ]);
+  }
 }
 
 @Route("api/v1/task-order/{taskOrderId}")