diff --git a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomField.php b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomField.php
index 06ff658c7..04cdd2308 100644
--- a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomField.php
+++ b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomField.php
@@ -48,7 +48,7 @@ class CustomField
     #[ORM\Column(type: \Doctrine\DBAL\Types\Types::FLOAT)]
     private ?float $ordering = null;
 
-    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::BOOLEAN)]
+    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::BOOLEAN, options: ['default' => false])]
     private false $required = false;
 
     #[ORM\Column(type: \Doctrine\DBAL\Types\Types::STRING, length: 255)]
diff --git a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php
index c8bdc6031..bd98cec68 100644
--- a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php
+++ b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldLongChoice/Option.php
@@ -33,7 +33,7 @@ class Option
     #[ORM\GeneratedValue(strategy: 'AUTO')]
     private ?int $id = null;
 
-    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::STRING, length: 50, name: 'internal_key')]
+    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::STRING, length: 50, name: 'internal_key', options: ['default' => ''])]
     private string $internalKey = '';
 
     #[ORM\Column(type: \Doctrine\DBAL\Types\Types::STRING, length: 15)]
diff --git a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php
index 265dd972b..b50596eab 100644
--- a/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php
+++ b/src/Bundle/ChillCustomFieldsBundle/Entity/CustomFieldsGroup.php
@@ -49,7 +49,7 @@ class CustomFieldsGroup
     #[ORM\Column(type: \Doctrine\DBAL\Types\Types::JSON)]
     private array|string $name;
 
-    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::JSON, nullable: true)]
+    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::JSON, nullable: true, options: ['default' => '{}', 'jsonb' => true])]
     private array $options = [];
 
     /**
diff --git a/src/Bundle/ChillEventBundle/Entity/Event.php b/src/Bundle/ChillEventBundle/Entity/Event.php
index 2c2105b55..c065ed94f 100644
--- a/src/Bundle/ChillEventBundle/Entity/Event.php
+++ b/src/Bundle/ChillEventBundle/Entity/Event.php
@@ -85,7 +85,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
     #[ORM\JoinTable('chill_event_event_documents')]
     private Collection $documents;
 
-    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::DECIMAL, precision: 10, scale: 4, nullable: true, options: ['default' => null])]
+    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::DECIMAL, precision: 10, scale: 4, nullable: true, options: ['default' => '0.0'])]
     private string $organizationCost = '0.0';
 
     /**
diff --git a/src/Bundle/ChillMainBundle/migrations/Version20241104135957.php b/src/Bundle/ChillMainBundle/migrations/Version20241104135957.php
new file mode 100644
index 000000000..af081b147
--- /dev/null
+++ b/src/Bundle/ChillMainBundle/migrations/Version20241104135957.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\Main;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20241104135957 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Define default values for entity properties';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_event_event ALTER organizationcost DROP DEFAULT');
+        $this->addSql('ALTER TABLE chill_person_accompanying_period_user_history ALTER startdate SET DEFAULT \'now()\'');
+        $this->addSql('ALTER TABLE chill_event_event ALTER organizationcost SET DEFAULT \'0.0\'');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_event_event ALTER organizationCost SET DEFAULT \'0.0\'');
+    }
+}