diff --git a/src/Bundle/ChillTicketBundle/src/Entity/CallerHistory.php b/src/Bundle/ChillTicketBundle/src/Entity/CallerHistory.php
new file mode 100644
index 000000000..08199919b
--- /dev/null
+++ b/src/Bundle/ChillTicketBundle/src/Entity/CallerHistory.php
@@ -0,0 +1,149 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\TicketBundle\Entity;
+
+use Chill\MainBundle\Doctrine\Model\TrackCreationInterface;
+use Chill\MainBundle\Doctrine\Model\TrackCreationTrait;
+use Chill\PersonBundle\Entity\Person;
+use Chill\ThirdPartyBundle\Entity\ThirdParty;
+use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Serializer\Annotation as Serializer;
+
+/**
+ * Represents the history of a caller associated with a ticket.
+ *
+ * This entity is used to track the changes in a ticket's caller over time.
+ * The caller can be either a Person or a ThirdParty.
+ * Implements the TrackCreationInterface for tracking entity lifecycle creation.
+ */
+#[ORM\Entity]
+#[ORM\Table(name: 'caller_history', schema: 'chill_ticket')]
+#[Serializer\DiscriminatorMap(typeProperty: 'type', mapping: ['ticket_caller_history' => CallerHistory::class])]
+class CallerHistory implements TrackCreationInterface
+{
+    use TrackCreationTrait;
+
+    #[ORM\Id]
+    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::INTEGER, nullable: false)]
+    #[ORM\GeneratedValue(strategy: 'AUTO')]
+    #[Serializer\Groups(['read'])]
+    private ?int $id = null;
+
+    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::DATETIME_IMMUTABLE, nullable: true, options: ['default' => null])]
+    #[Serializer\Groups(['read'])]
+    private ?\DateTimeImmutable $endDate = null;
+
+    #[ORM\ManyToOne(targetEntity: Person::class)]
+    #[ORM\JoinColumn(nullable: true)]
+    #[Serializer\Groups(['read'])]
+    private ?Person $person = null;
+
+    #[ORM\ManyToOne(targetEntity: ThirdParty::class)]
+    #[ORM\JoinColumn(nullable: true)]
+    #[Serializer\Groups(['read'])]
+    private ?ThirdParty $thirdParty = null;
+
+    public function __construct(
+        ThirdParty|Person $caller,
+        #[ORM\ManyToOne(targetEntity: Ticket::class)]
+        #[ORM\JoinColumn(nullable: false)]
+        private Ticket $ticket,
+        #[ORM\Column(type: \Doctrine\DBAL\Types\Types::DATETIME_IMMUTABLE, nullable: false)]
+        #[Serializer\Groups(['read'])]
+        private \DateTimeImmutable $startDate = new \DateTimeImmutable('now'),
+    ) {
+        $this->setCaller($caller);
+        $ticket->addCallerHistory($this);
+    }
+
+    public function getEndDate(): ?\DateTimeImmutable
+    {
+        return $this->endDate;
+    }
+
+    public function getId(): ?int
+    {
+        return $this->id;
+    }
+
+    public function getPerson(): ?Person
+    {
+        return $this->person;
+    }
+
+    public function getThirdParty(): ?ThirdParty
+    {
+        return $this->thirdParty;
+    }
+
+    public function getStartDate(): \DateTimeImmutable
+    {
+        return $this->startDate;
+    }
+
+    public function getTicket(): Ticket
+    {
+        return $this->ticket;
+    }
+
+    public function setEndDate(?\DateTimeImmutable $endDate): void
+    {
+        $this->endDate = $endDate;
+    }
+
+    public function setPerson(?Person $person): self
+    {
+        $this->person = $person;
+
+        // If setting a person, ensure thirdParty is null
+        if (null !== $person) {
+            $this->thirdParty = null;
+        }
+
+        return $this;
+    }
+
+    public function setThirdParty(?ThirdParty $thirdParty): self
+    {
+        $this->thirdParty = $thirdParty;
+
+        // If setting a thirdParty, ensure person is null
+        if (null !== $thirdParty) {
+            $this->person = null;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the caller.
+     *
+     * This is a private method and should be only called while instance creation
+     */
+    private function setCaller(Person|ThirdParty $caller): void
+    {
+        if ($caller instanceof Person) {
+            $this->setPerson($caller);
+
+        } else {
+            $this->setThirdParty($caller);
+        }
+    }
+
+    /**
+     * Get the caller, which can be either a Person or a ThirdParty.
+     */
+    public function getCaller(): Person|ThirdParty
+    {
+        return $this->person ?? $this->thirdParty;
+    }
+}
diff --git a/src/Bundle/ChillTicketBundle/src/Entity/Ticket.php b/src/Bundle/ChillTicketBundle/src/Entity/Ticket.php
index 8ef4f64a9..092aa5a35 100644
--- a/src/Bundle/ChillTicketBundle/src/Entity/Ticket.php
+++ b/src/Bundle/ChillTicketBundle/src/Entity/Ticket.php
@@ -96,6 +96,12 @@ class Ticket implements TrackCreationInterface, TrackUpdateInterface
     #[ORM\OneToMany(targetEntity: EmergencyStatusHistory::class, mappedBy: 'ticket', cascade: ['persist', 'remove'])]
     private Collection $emergencyStatusHistories;
 
+    /**
+     * @var Collection<int, CallerHistory>
+     */
+    #[ORM\OneToMany(targetEntity: CallerHistory::class, mappedBy: 'ticket', cascade: ['persist', 'remove'])]
+    private Collection $callerHistories;
+
     public function __construct()
     {
         $this->addresseeHistory = new ArrayCollection();
@@ -105,6 +111,7 @@ class Ticket implements TrackCreationInterface, TrackUpdateInterface
         $this->inputHistories = new ArrayCollection();
         $this->stateHistories = new ArrayCollection();
         $this->emergencyStatusHistories = new ArrayCollection();
+        $this->callerHistories = new ArrayCollection();
     }
 
     public function getId(): ?int
@@ -294,4 +301,36 @@ class Ticket implements TrackCreationInterface, TrackUpdateInterface
     {
         return $this->emergencyStatusHistories;
     }
+
+    /**
+     * @internal use @see{CallerHistory::__construct} instead
+     */
+    public function addCallerHistory(CallerHistory $callerHistory): void
+    {
+        $this->callerHistories->add($callerHistory);
+    }
+
+    /**
+     * Get the current caller (Person or ThirdParty) associated with this ticket.
+     *
+     * @return Person|ThirdParty|null
+     */
+    public function getCaller()
+    {
+        foreach ($this->callerHistories as $callerHistory) {
+            if (null === $callerHistory->getEndDate()) {
+                return $callerHistory->getCaller();
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * @return ReadableCollection<int, CallerHistory>
+     */
+    public function getCallerHistories(): ReadableCollection
+    {
+        return $this->callerHistories;
+    }
 }
diff --git a/src/Bundle/ChillTicketBundle/src/migrations/Version20250624105842.php b/src/Bundle/ChillTicketBundle/src/migrations/Version20250624105842.php
new file mode 100644
index 000000000..1a49a4f5b
--- /dev/null
+++ b/src/Bundle/ChillTicketBundle/src/migrations/Version20250624105842.php
@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\Migrations\Ticket;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20250624105842 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add CallerHistory entity to associate a ticket with either a Person or a ThirdParty entity';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+            CREATE SEQUENCE chill_ticket.caller_history_id_seq INCREMENT BY 1 MINVALUE 1 START 1
+        SQL);
+        $this->addSql(<<<'SQL'
+            CREATE TABLE chill_ticket.caller_history (id INT NOT NULL, person_id INT DEFAULT NULL, ticket_id INT NOT NULL, endDate TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT NULL, startDate TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL, createdAt TIMESTAMP(0) WITHOUT TIME ZONE DEFAULT NULL, thirdParty_id INT DEFAULT NULL, createdBy_id INT DEFAULT NULL, PRIMARY KEY(id))
+        SQL);
+        $this->addSql(<<<'SQL'
+            CREATE INDEX IDX_AD0DCE24217BBB47 ON chill_ticket.caller_history (person_id)
+        SQL);
+        $this->addSql(<<<'SQL'
+            CREATE INDEX IDX_AD0DCE243EA5CAB0 ON chill_ticket.caller_history (thirdParty_id)
+        SQL);
+        $this->addSql(<<<'SQL'
+            CREATE INDEX IDX_AD0DCE24700047D2 ON chill_ticket.caller_history (ticket_id)
+        SQL);
+        $this->addSql(<<<'SQL'
+            CREATE INDEX IDX_AD0DCE243174800F ON chill_ticket.caller_history (createdBy_id)
+        SQL);
+        $this->addSql(<<<'SQL'
+            COMMENT ON COLUMN chill_ticket.caller_history.endDate IS '(DC2Type:datetime_immutable)'
+        SQL);
+        $this->addSql(<<<'SQL'
+            COMMENT ON COLUMN chill_ticket.caller_history.startDate IS '(DC2Type:datetime_immutable)'
+        SQL);
+        $this->addSql(<<<'SQL'
+            COMMENT ON COLUMN chill_ticket.caller_history.createdAt IS '(DC2Type:datetime_immutable)'
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history ADD CONSTRAINT FK_AD0DCE24217BBB47 FOREIGN KEY (person_id) REFERENCES chill_person_person (id) NOT DEFERRABLE INITIALLY IMMEDIATE
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history ADD CONSTRAINT FK_AD0DCE243EA5CAB0 FOREIGN KEY (thirdParty_id) REFERENCES chill_3party.third_party (id) NOT DEFERRABLE INITIALLY IMMEDIATE
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history ADD CONSTRAINT FK_AD0DCE24700047D2 FOREIGN KEY (ticket_id) REFERENCES chill_ticket.ticket (id) NOT DEFERRABLE INITIALLY IMMEDIATE
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history ADD CONSTRAINT FK_AD0DCE243174800F FOREIGN KEY (createdBy_id) REFERENCES users (id) NOT DEFERRABLE INITIALLY IMMEDIATE
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history ADD CONSTRAINT caller_history_not_overlaps
+            exclude using gist (ticket_id with =, tsrange(startdate, enddate) with &&)
+            deferrable initially deferred
+        SQL);
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+            DROP SEQUENCE chill_ticket.caller_history_id_seq CASCADE
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history DROP CONSTRAINT FK_AD0DCE24217BBB47
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history DROP CONSTRAINT FK_AD0DCE243EA5CAB0
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history DROP CONSTRAINT FK_AD0DCE24700047D2
+        SQL);
+        $this->addSql(<<<'SQL'
+            ALTER TABLE chill_ticket.caller_history DROP CONSTRAINT FK_AD0DCE243174800F
+        SQL);
+        $this->addSql(<<<'SQL'
+            DROP TABLE chill_ticket.caller_history
+        SQL);
+    }
+}
diff --git a/src/Bundle/ChillTicketBundle/tests/Entity/CallerHistoryTest.php b/src/Bundle/ChillTicketBundle/tests/Entity/CallerHistoryTest.php
new file mode 100644
index 000000000..36024fde5
--- /dev/null
+++ b/src/Bundle/ChillTicketBundle/tests/Entity/CallerHistoryTest.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\TicketBundle\Tests\Entity;
+
+use Chill\PersonBundle\Entity\Person;
+use Chill\ThirdPartyBundle\Entity\ThirdParty;
+use Chill\TicketBundle\Entity\CallerHistory;
+use Chill\TicketBundle\Entity\Ticket;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @internal
+ *
+ * @coversNothing
+ */
+class CallerHistoryTest extends TestCase
+{
+    public function testConstructorWithPerson(): void
+    {
+        $ticket = new Ticket();
+
+        $callerHistory = new CallerHistory($person = new Person(), $ticket);
+
+        self::assertSame($ticket, $callerHistory->getTicket());
+        self::assertNull($callerHistory->getEndDate());
+        self::assertSame($person, $callerHistory->getPerson());
+        self::assertNull($callerHistory->getThirdParty());
+        self::assertSame($person, $callerHistory->getCaller());
+    }
+
+    public function testConstructorWithThirdParty(): void
+    {
+        $ticket = new Ticket();
+
+        $callerHistory = new CallerHistory($thirdParty = new ThirdParty(), $ticket);
+
+        self::assertSame($ticket, $callerHistory->getTicket());
+        self::assertNull($callerHistory->getEndDate());
+        self::assertNull($callerHistory->getPerson());
+        self::assertSame($thirdParty, $callerHistory->getThirdParty());
+        self::assertSame($thirdParty, $callerHistory->getCaller());
+    }
+
+    public function testSetEndDate(): void
+    {
+        $ticket = $this->createMock(Ticket::class);
+        $callerHistory = new CallerHistory(new ThirdParty(), $ticket);
+
+        $endDate = new \DateTimeImmutable('2023-01-01');
+        $callerHistory->setEndDate($endDate);
+
+        self::assertSame($endDate, $callerHistory->getEndDate());
+    }
+}
diff --git a/src/Bundle/ChillTicketBundle/tests/Entity/TicketCallerTest.php b/src/Bundle/ChillTicketBundle/tests/Entity/TicketCallerTest.php
new file mode 100644
index 000000000..ad9b8ecaf
--- /dev/null
+++ b/src/Bundle/ChillTicketBundle/tests/Entity/TicketCallerTest.php
@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\TicketBundle\Tests\Entity;
+
+use Chill\PersonBundle\Entity\Person;
+use Chill\ThirdPartyBundle\Entity\ThirdParty;
+use Chill\TicketBundle\Entity\CallerHistory;
+use Chill\TicketBundle\Entity\Ticket;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @internal
+ *
+ * @coversNothing
+ */
+class TicketCallerTest extends TestCase
+{
+    public function testGetCaller(): void
+    {
+        $ticket = new Ticket();
+
+        // Initially, there should be no caller
+        self::assertNull($ticket->getCaller());
+
+        // Create a person
+        $person = new Person();
+
+        // Create a caller history with the person
+        $callerHistory = new CallerHistory($person, $ticket);
+
+        // The ticket should now return the person as the caller
+        self::assertSame($person, $ticket->getCaller());
+
+        // Create a third party
+        $thirdParty = new ThirdParty();
+
+        // Create a new caller history with the third party
+        $callerHistory2 = new CallerHistory($thirdParty, $ticket);
+
+        // End the first caller history
+        $callerHistory->setEndDate(new \DateTimeImmutable());
+
+        // The ticket should now return the third party as the caller
+        self::assertSame($thirdParty, $ticket->getCaller());
+
+        // End the second caller history
+        $callerHistory2->setEndDate(new \DateTimeImmutable());
+
+        // The ticket should now return null as there is no active caller
+        self::assertNull($ticket->getCaller());
+    }
+
+    public function testGetCallerHistories(): void
+    {
+        $ticket = new Ticket();
+
+        // Initially, there should be no caller histories
+        self::assertCount(0, $ticket->getCallerHistories());
+
+        // Create a caller history
+        $callerHistory = new CallerHistory(new Person(), $ticket);
+
+        // The ticket should now have one caller history
+        self::assertCount(1, $ticket->getCallerHistories());
+        self::assertSame($callerHistory, $ticket->getCallerHistories()->first());
+
+        // Create another caller history
+        $callerHistory2 = new CallerHistory(new ThirdParty(), $ticket);
+
+        // The ticket should now have two caller histories
+        self::assertCount(2, $ticket->getCallerHistories());
+    }
+}