diff --git a/src/fellchensammlung/migrations/0021_user_reason_for_signup.py b/src/fellchensammlung/migrations/0021_user_reason_for_signup.py
new file mode 100644
index 0000000..7b83916
--- /dev/null
+++ b/src/fellchensammlung/migrations/0021_user_reason_for_signup.py
@@ -0,0 +1,19 @@
+# Generated by Django 5.1.1 on 2024-11-14 20:15
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fellchensammlung', '0020_alter_rescueorganization_internal_comment'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='reason_for_signup',
+            field=models.TextField(default='-', verbose_name='Grund für die Registrierung'),
+            preserve_default=False,
+        ),
+    ]
diff --git a/src/fellchensammlung/models.py b/src/fellchensammlung/models.py
index 86d75d1..495d82f 100644
--- a/src/fellchensammlung/models.py
+++ b/src/fellchensammlung/models.py
@@ -149,6 +149,8 @@ class User(AbstractUser):
     updated_at = models.DateTimeField(auto_now=True)
     organization_affiliation = models.ForeignKey(RescueOrganization, on_delete=models.PROTECT, null=True, blank=True,
                                                  verbose_name=_('Organisation'))
+    reason_for_signup = models.TextField(verbose_name=_("Grund für die Registrierung"))
+    REQUIRED_FIELDS = ["reason_for_signup", "email"]
 
     class Meta:
         verbose_name = _('Nutzer*in')