diff --git a/src/Bundle/ChillMainBundle/Security/Authorization/EntityWorkflowVoter.php b/src/Bundle/ChillMainBundle/Security/Authorization/EntityWorkflowVoter.php
index 44766a583..ee45d1e56 100644
--- a/src/Bundle/ChillMainBundle/Security/Authorization/EntityWorkflowVoter.php
+++ b/src/Bundle/ChillMainBundle/Security/Authorization/EntityWorkflowVoter.php
@@ -13,6 +13,7 @@ namespace Chill\MainBundle\Security\Authorization;
 
 use Chill\MainBundle\Entity\Workflow\EntityWorkflow;
 use Chill\MainBundle\Workflow\EntityWorkflowManager;
+use Chill\MainBundle\Workflow\Helper\DuplicateEntityWorkflowFinder;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authorization\Voter\Voter;
 use Symfony\Component\Security\Core\Security;
@@ -27,7 +28,11 @@ class EntityWorkflowVoter extends Voter
 
     final public const SHOW_ENTITY_LINK = 'CHILL_MAIN_WORKFLOW_LINK_SHOW';
 
-    public function __construct(private readonly EntityWorkflowManager $manager, private readonly Security $security) {}
+    public function __construct(
+        private readonly EntityWorkflowManager $manager,
+        private readonly Security $security,
+        private readonly DuplicateEntityWorkflowFinder $duplicateEntityWorkflowFinder,
+    ) {}
 
     protected function supports($attribute, $subject)
     {
@@ -41,6 +46,15 @@ class EntityWorkflowVoter extends Voter
     {
         switch ($attribute) {
             case self::CREATE:
+                if (false === $this->voteOnAttribute(self::SEE, $subject, $token)) {
+                    return false;
+                }
+
+                if ($this->duplicateEntityWorkflowFinder->hasDuplicateOpenedOrFinalPositiveEntityWorkflow($subject)) {
+                    return false;
+                }
+
+                return true;
             case self::SEE:
                 $handler = $this->manager->getHandler($subject);
 
diff --git a/src/Bundle/ChillMainBundle/Workflow/Helper/DuplicateEntityWorkflowFinder.php b/src/Bundle/ChillMainBundle/Workflow/Helper/DuplicateEntityWorkflowFinder.php
new file mode 100644
index 000000000..7ade75223
--- /dev/null
+++ b/src/Bundle/ChillMainBundle/Workflow/Helper/DuplicateEntityWorkflowFinder.php
@@ -0,0 +1,57 @@
+<?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\MainBundle\Workflow\Helper;
+
+use Chill\MainBundle\Entity\Workflow\EntityWorkflow;
+use Chill\MainBundle\Repository\Workflow\EntityWorkflowRepository;
+
+/**
+ * Class DuplicateEntityWorkflowFinder.
+ *
+ * Finds duplicate entity workflows based on their status.
+ */
+class DuplicateEntityWorkflowFinder
+{
+    public function __construct(private readonly EntityWorkflowRepository $entityWorkflowRepository, private readonly OpenedEntityWorkflowHelper $openedEntityWorkflowHelper) {}
+
+    /**
+     * Return true if the related entity has opened workflow with same name, or workflow with a positive final step.
+     *
+     * This will return false if the other workflow is final **and** negative (because it has been canceled, for instance).
+     *
+     * If there isn't any other workflow related to the same entity, this will return false.
+     */
+    public function hasDuplicateOpenedOrFinalPositiveEntityWorkflow(EntityWorkflow $entityWorkflow): bool
+    {
+        $otherWorkflows = $this->entityWorkflowRepository->findByRelatedEntity($entityWorkflow->getRelatedEntityClass(), $entityWorkflow->getRelatedEntityId());
+
+        foreach ($otherWorkflows as $otherWorkflow) {
+            if ($entityWorkflow === $otherWorkflow) {
+                continue;
+            }
+
+            if ($otherWorkflow->getWorkflowName() !== $entityWorkflow->getWorkflowName()) {
+                continue;
+            }
+
+            if (!$this->openedEntityWorkflowHelper->isFinal($otherWorkflow)) {
+                return true;
+            }
+
+            if ($this->openedEntityWorkflowHelper->isFinalPositive($otherWorkflow)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}
diff --git a/src/Bundle/ChillMainBundle/Workflow/Helper/MetadataExtractor.php b/src/Bundle/ChillMainBundle/Workflow/Helper/MetadataExtractor.php
index f99449dc3..0774ad10a 100644
--- a/src/Bundle/ChillMainBundle/Workflow/Helper/MetadataExtractor.php
+++ b/src/Bundle/ChillMainBundle/Workflow/Helper/MetadataExtractor.php
@@ -19,20 +19,33 @@ use Symfony\Component\Workflow\WorkflowInterface;
 
 class MetadataExtractor
 {
-    public function __construct(private readonly Registry $registry, private readonly TranslatableStringHelperInterface $translatableStringHelper) {}
+    public function __construct(
+        private readonly Registry $registry,
+        private readonly TranslatableStringHelperInterface $translatableStringHelper,
+        private readonly DuplicateEntityWorkflowFinder $duplicateEntityWorkflowFinder,
+    ) {}
 
     public function availableWorkflowFor(string $relatedEntityClass, ?int $relatedEntityId = 0): array
     {
         $blankEntityWorkflow = new EntityWorkflow();
         $blankEntityWorkflow
             ->setRelatedEntityId($relatedEntityId)
-            ->setRelatedEntityClass($relatedEntityClass);
+            ->setRelatedEntityClass($relatedEntityClass)
+        ;
 
         // build the list of available workflows, and extract their names from metadata
         $workflows = $this->registry->all($blankEntityWorkflow);
         $workflowsList = [];
 
         foreach ($workflows as $workflow) {
+            // shortcut: we must not be able to create a new workflow if there are already created workflows,
+            // so, we find if there are workflows opened or final positive for the same entity
+            $blankEntityWorkflow->setWorkflowName($workflow->getName());
+            if ($this->duplicateEntityWorkflowFinder->hasDuplicateOpenedOrFinalPositiveEntityWorkflow($blankEntityWorkflow)) {
+                // if yes, we skip suggesting workflow
+                continue;
+            }
+
             $metadata = $workflow->getMetadataStore()->getWorkflowMetadata();
             $text = \array_key_exists('label', $metadata) ?
                 $this->translatableStringHelper->localize($metadata['label']) : $workflow->getName();
diff --git a/src/Bundle/ChillMainBundle/Workflow/Templating/WorkflowTwigExtensionRuntime.php b/src/Bundle/ChillMainBundle/Workflow/Templating/WorkflowTwigExtensionRuntime.php
index 332ccd2e5..87fbf4498 100644
--- a/src/Bundle/ChillMainBundle/Workflow/Templating/WorkflowTwigExtensionRuntime.php
+++ b/src/Bundle/ChillMainBundle/Workflow/Templating/WorkflowTwigExtensionRuntime.php
@@ -59,7 +59,6 @@ class WorkflowTwigExtensionRuntime implements RuntimeExtensionInterface
 
         return $environment->render('@ChillMain/Workflow/_extension_list_workflow_for.html.twig', [
             'entity_workflows_json' => $this->normalizer->normalize($entityWorkflows, 'json', ['groups' => 'read']),
-            'blank_workflow' => $blankEntityWorkflow,
             'workflows_available' => $workflowsAvailable,
             'relatedEntityClass' => $relatedEntityClass,
             'relatedEntityId' => $relatedEntityId,