diff --git a/sources/tmgmt_config/src/Tests/ConfigSourceUiTest.php b/sources/tmgmt_config/src/Tests/ConfigSourceUiTest.php
index 72a4589..d39322a 100644
--- a/sources/tmgmt_config/src/Tests/ConfigSourceUiTest.php
+++ b/sources/tmgmt_config/src/Tests/ConfigSourceUiTest.php
@@ -117,6 +117,28 @@ class ConfigSourceUiTest extends EntityTestBase {
       }
     }
     $this->assertEqual($counter, 2);
+
+    // Test that a job can not be accepted if the translator does not exist.
+    // Request an italian translation.
+    $edit = array(
+      'languages[it]' => TRUE,
+    );
+    $this->drupalPostForm(NULL, $edit, t('Request translation'));
+
+    // Go back to the originally defined destination URL without submitting.
+    $this->drupalGet('admin/structure/types/manage/article/translate');
+
+    // Verify that the pending translation is shown.
+    $this->clickLink(t('In progress'));
+
+    // Try to save, should fail because the job has no translator assigned.
+    $edit = array(
+      'name[translation]' => $this->randomMachineName(),
+    );
+    $this->drupalPostForm(NULL, $edit, t('Save'));
+
+    // Verify that we are on the checkout page.
+    $this->assertResponse(200);
   }
 
   /**
diff --git a/src/Entity/JobItem.php b/src/Entity/JobItem.php
index 45d0a45..56689c4 100644
--- a/src/Entity/JobItem.php
+++ b/src/Entity/JobItem.php
@@ -722,7 +722,7 @@ class JobItem extends ContentEntityBase implements JobItemInterface {
           break;
         }
       }
-      if ($finished) {
+      if ($finished && $this->getJob()->hasTranslator()) {
         // There are no unfinished elements left.
         if ($this->getJob()->getTranslator()->isAutoAccept()) {
           // If the job item is going to be auto-accepted, set to review without
diff --git a/src/Form/JobItemForm.php b/src/Form/JobItemForm.php
index 2ad5c2a..04803e7 100644
--- a/src/Form/JobItemForm.php
+++ b/src/Form/JobItemForm.php
@@ -201,7 +201,7 @@ class JobItemForm extends TmgmtFormBase {
     $source_ui = $this->sourceManager->createUIInstance($item->getPlugin());
     $source_ui->reviewFormValidate($form, $form_state, $item);
     // Invoke the validation method on the translator controller (if available).
-    if ($item->getTranslator()) {
+    if ($item->hasTranslator()) {
       $translator_ui = $this->translatorManager->createUIInstance($item->getTranslator()->getPluginId());
       $translator_ui->reviewFormValidate($form, $form_state, $item);
     }