diff --git a/src/Bundle/ChillDocStoreBundle/Tests/Workflow/AccompanyingCourseDocumentDuplicatorTest.php b/src/Bundle/ChillDocStoreBundle/Tests/Workflow/AccompanyingCourseDocumentDuplicatorTest.php
new file mode 100644
index 000000000..fd920c7a9
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Tests/Workflow/AccompanyingCourseDocumentDuplicatorTest.php
@@ -0,0 +1,72 @@
+<?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\DocStoreBundle\Tests\Workflow;
+
+use Chill\DocStoreBundle\Entity\AccompanyingCourseDocument;
+use Chill\DocStoreBundle\Entity\DocumentCategory;
+use Chill\DocStoreBundle\Entity\StoredObject;
+use Chill\DocStoreBundle\Service\StoredObjectDuplicate;
+use Chill\DocStoreBundle\Workflow\AccompanyingCourseDocumentDuplicator;
+use Chill\MainBundle\Entity\User;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Clock\MockClock;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+use Symfony\Component\Security\Core\Security;
+use Symfony\Contracts\Translation\TranslatorInterface;
+
+/**
+ * @internal
+ *
+ * @coversNothing
+ */
+class AccompanyingCourseDocumentDuplicatorTest extends TestCase
+{
+    public function testDuplicate(): void
+    {
+        $object = new StoredObject();
+
+        $document = new AccompanyingCourseDocument();
+        $document
+            ->setDate($date = new \DateTimeImmutable())
+            ->setObject($object)
+            ->setTitle('Title')
+            ->setUser($user = new User())
+            ->setCategory($category = new DocumentCategory('bundle', 10))
+            ->setDescription($description = 'Description');
+
+        $actual = $this->buildDuplicator()->duplicate($document);
+
+        self::assertSame($date, $actual->getDate());
+        // FYI, the duplication of object is checked by the mock
+        self::assertNotNull($actual->getObject());
+        self::assertStringStartsWith('Title', $actual->getTitle());
+        self::assertSame($user, $actual->getUser());
+        self::assertSame($category, $actual->getCategory());
+        self::assertEquals($description, $actual->getDescription());
+    }
+
+    private function buildDuplicator(): AccompanyingCourseDocumentDuplicator
+    {
+        $storedObjectDuplicate = $this->createMock(StoredObjectDuplicate::class);
+        $storedObjectDuplicate->expects($this->once())->method('duplicate')
+            ->with($this->isInstanceOf(StoredObject::class))->willReturn(new StoredObject());
+        $translator = $this->createMock(TranslatorInterface::class);
+        $translator->method('trans')->withAnyParameters()->willReturn('duplicated');
+        $clock = new MockClock();
+
+        return new AccompanyingCourseDocumentDuplicator(
+            $storedObjectDuplicate,
+            $translator,
+            $clock
+        );
+    }
+}
diff --git a/src/Bundle/ChillDocStoreBundle/Workflow/AccompanyingCourseDocumentDuplicator.php b/src/Bundle/ChillDocStoreBundle/Workflow/AccompanyingCourseDocumentDuplicator.php
new file mode 100644
index 000000000..b4c15fc22
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Workflow/AccompanyingCourseDocumentDuplicator.php
@@ -0,0 +1,48 @@
+<?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\DocStoreBundle\Workflow;
+
+use Chill\DocStoreBundle\Entity\AccompanyingCourseDocument;
+use Chill\DocStoreBundle\Security\Authorization\AccompanyingCourseDocumentVoter;
+use Chill\DocStoreBundle\Service\StoredObjectDuplicate;
+use Symfony\Component\Clock\ClockInterface;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+use Symfony\Component\Security\Core\Security;
+use Symfony\Contracts\Translation\TranslatorInterface;
+
+/**
+ * Stores the logic to duplicate an AccompanyingCourseDocument associated to a workflow.
+ */
+class AccompanyingCourseDocumentDuplicator
+{
+    public function __construct(
+        private readonly StoredObjectDuplicate $storedObjectDuplicate,
+        private readonly TranslatorInterface $translator,
+        private readonly ClockInterface $clock,
+    ) {}
+
+    public function duplicate(AccompanyingCourseDocument $document): AccompanyingCourseDocument
+    {
+        $newDoc = new AccompanyingCourseDocument();
+        $newDoc
+            ->setCourse($document->getCourse())
+            ->setTitle($document->getTitle().' ('.$this->translator->trans('acc_course_document.duplicated_at', ['at' => $this->clock->now()]).')')
+            ->setDate($document->getDate())
+            ->setDescription($document->getDescription())
+            ->setCategory($document->getCategory())
+            ->setUser($document->getUser())
+            ->setObject($this->storedObjectDuplicate->duplicate($document->getObject()))
+        ;
+
+        return $newDoc;
+    }
+}
diff --git a/src/Bundle/ChillDocStoreBundle/Workflow/AccompanyingCourseDocumentWorkflowHandler.php b/src/Bundle/ChillDocStoreBundle/Workflow/AccompanyingCourseDocumentWorkflowHandler.php
index bc8de6587..ba7c477e5 100644
--- a/src/Bundle/ChillDocStoreBundle/Workflow/AccompanyingCourseDocumentWorkflowHandler.php
+++ b/src/Bundle/ChillDocStoreBundle/Workflow/AccompanyingCourseDocumentWorkflowHandler.php
@@ -17,6 +17,7 @@ use Chill\DocStoreBundle\Entity\StoredObject;
 use Chill\DocStoreBundle\Security\Authorization\AccompanyingCourseDocumentVoter;
 use Chill\MainBundle\Entity\Workflow\EntityWorkflow;
 use Chill\MainBundle\Repository\Workflow\EntityWorkflowRepository;
+use Chill\MainBundle\Workflow\EntityWorkflowWithDuplicableRelatedEntityInterface;
 use Chill\MainBundle\Workflow\EntityWorkflowWithStoredObjectHandlerInterface;
 use Chill\PersonBundle\Entity\AccompanyingPeriodParticipation;
 use Symfony\Contracts\Translation\TranslatorInterface;
@@ -27,8 +28,8 @@ use Symfony\Contracts\Translation\TranslatorInterface;
 readonly class AccompanyingCourseDocumentWorkflowHandler implements EntityWorkflowWithStoredObjectHandlerInterface
 {
     public function __construct(
-        private TranslatorInterface $translator,
-        private EntityWorkflowRepository $workflowRepository,
+        private TranslatorInterface                  $translator,
+        private EntityWorkflowRepository             $workflowRepository,
         private AccompanyingCourseDocumentRepository $repository,
     ) {}
 
diff --git a/src/Bundle/ChillDocStoreBundle/translations/messages+intl-icu.fr.yml b/src/Bundle/ChillDocStoreBundle/translations/messages+intl-icu.fr.yml
new file mode 100644
index 000000000..0132cdc4f
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/translations/messages+intl-icu.fr.yml
@@ -0,0 +1,3 @@
+acc_course_document:
+    duplicated_at: >-
+        Dupliqué le {at, date, long} à {at, time, short}