diff --git a/app/models/contact.rb b/app/models/contact.rb
index e1e1f6f971fc26e73e3fc2bc2b20156e756e225b..f8f234aef7450e44c631140bcce9f737446b82b7 100644
--- a/app/models/contact.rb
+++ b/app/models/contact.rb
@@ -86,6 +86,8 @@ class Contact < ApplicationRecord
   end
 
   def update_staffomatic
+    return true unless StaffomaticService.configured?
+
     contactable.update_staffomatic! if contactable.is_a?(Volunteer)
   end
 end
diff --git a/app/policies/group_offer_policy.rb b/app/policies/group_offer_policy.rb
index d94645070a9aa1b6e17ca76334030feccea2191e..78b7076d4cb655c3466df5867f8e1f9f66264687 100644
--- a/app/policies/group_offer_policy.rb
+++ b/app/policies/group_offer_policy.rb
@@ -17,7 +17,7 @@ class GroupOfferPolicy < ApplicationPolicy
       group_assignments_attributes
     ]
     attributes << :department_id if edit?
-    attributes << :staffomatic_department_ids if superadmin?
+    attributes << :staffomatic_department_ids if superadmin? && StaffomaticService.configured?
     attributes
   end
 
diff --git a/app/views/volunteers/_buttons.html.slim b/app/views/volunteers/_buttons.html.slim
index 1ecd15e50eaa57f419fcf155b9bc963ce5c1784f..de15d166b0e5c64830d552d3e4f4be59a4f983c1 100644
--- a/app/views/volunteers/_buttons.html.slim
+++ b/app/views/volunteers/_buttons.html.slim
@@ -28,6 +28,6 @@ ul.list-inline
   li= button_link icon_span(:email_subject), '#', title: 'Email subject', data: { subject: "[fw #{@volunteer.id}]" }
   - if policy(Event).index?
     li= button_link 'Veranstaltungen', events_path(q: { event_volunteers_volunteer_id_eq: @volunteer.id })
-  - if policy(@volunteer).superadmin? && @volunteer.staffomatic_user_id.blank?
+  - if policy(@volunteer).superadmin? && @volunteer.staffomatic_user_id.blank? && StaffomaticService.configured?
     li= button_link 'Invite to Staffomatic', staffomatic_invite_volunteer_path(@volunteer), { class: 'btn btn-default', title: 'Invite to Staffomatic' }
 
diff --git a/config/schedule.rb b/config/schedule.rb
index d0e555a7e41eeb2ef3440a4cd605db633fc2180e..4a61b889dad7bf985951a16436c918fa56f6c4c2 100644
--- a/config/schedule.rb
+++ b/config/schedule.rb
@@ -15,7 +15,8 @@ every 5.minutes do
   rake 'email_journal:create_journals'
 end
 
-every 5.minutes do
-  rake 'staffomatic:synchronize'
-  rake 'staffomatic:clean_volunteers'
-end
+# disabled
+# every 5.minutes do
+#   rake 'staffomatic:synchronize'
+#   rake 'staffomatic:clean_volunteers'
+# end