diff --git a/includes/model/Shifts_model.php b/includes/model/Shifts_model.php
index ff2c9dd2..5c6041c1 100644
--- a/includes/model/Shifts_model.php
+++ b/includes/model/Shifts_model.php
@@ -554,7 +554,7 @@ function Shift_signout_allowed(Shift $shift, AngelType $angeltype, $signout_user
         return true;
     }
 
-    if ($signout_user_id == $user->id && $shift->start->timestamp > time() + config('last_unsubscribe') * 3600) {
+    if ($signout_user_id == $user->id && $shift->start->subHours(config('last_unsubscribe')) > Carbon::now()) {
         return true;
     }
 
diff --git a/includes/sys_template.php b/includes/sys_template.php
index 362824ad..aab1e530 100644
--- a/includes/sys_template.php
+++ b/includes/sys_template.php
@@ -352,7 +352,7 @@ function render_table($columns, $rows, $data = true)
  * @param string $id
  * @return string
  */
-function button($href, $label, $class = '', $id = '', $title = '')
+function button($href, $label, $class = '', $id = '', $title = '', $disabled = false)
 {
     if (!Str::contains(str_replace(['btn-sm', 'btn-xl'], '', $class), 'btn-')) {
         $class = 'btn-secondary' . ($class ? ' ' . $class : '');
@@ -361,7 +361,7 @@ function button($href, $label, $class = '', $id = '', $title = '')
     $idAttribute = $id ? 'id="' . $id . '"' : '';
 
     return '<a ' . $idAttribute . ' href="' . $href
-        . '" class="btn ' . $class . '" title="' . $title . '">' . $label . '</a>';
+        . '" class="btn ' . $class . ($disabled ? ' disabled' : '') . '" title="' . $title . '">' . $label . '</a>';
 }
 
 /**
@@ -387,9 +387,9 @@ function button_checkbox_selection($name, $label, $value)
  *
  * @return string
  */
-function button_icon($href, $icon, $class = '', $title = '')
+function button_icon($href, $icon, $class = '', $title = '', $disabled = false)
 {
-    return button($href, icon($icon), $class, '', $title);
+    return button($href, icon($icon), $class, '', $title, $disabled);
 }
 
 /**
diff --git a/includes/view/Shifts_view.php b/includes/view/Shifts_view.php
index 0e7deba7..a49ed005 100644
--- a/includes/view/Shifts_view.php
+++ b/includes/view/Shifts_view.php
@@ -1,5 +1,6 @@
 <?php
 
+use Engelsystem\Helpers\Carbon;
 use Engelsystem\Models\AngelType;
 use Engelsystem\Models\Location;
 use Engelsystem\Models\Shifts\Shift;
@@ -189,7 +190,10 @@ function Shift_view(
     }
 
     if ($shift_signup_state->getState() === ShiftSignupStatus::SIGNED_UP) {
-        $content[] = info(__('You are signed up for this shift.'), true);
+        $content[] = info(__('You are signed up for this shift.')
+            . (($shift->start->subHours(config('last_unsubscribe')) < Carbon::now() && $shift->end > Carbon::now())
+                ? ' ' . __('shift.sign_out.hint', [config('last_unsubscribe')])
+                : ''), true);
     }
 
     if (config('signup_advance_hours') && $shift->start->timestamp > time() + config('signup_advance_hours') * 3600) {
@@ -325,7 +329,13 @@ function Shift_view_render_shift_entry(ShiftEntry $shift_entry, $user_shift_admi
         }
         $angeltype = $shift_entry->angelType;
         $disabled = Shift_signout_allowed($shift, $angeltype, $shift_entry->user_id) ? '' : ' btn-disabled';
-        $entry .= button_icon(shift_entry_delete_link($shift_entry), 'trash', 'btn-sm btn-danger' . $disabled, __('form.delete'));
+        $entry .= button_icon(
+            shift_entry_delete_link($shift_entry),
+            'trash',
+            'btn-sm btn-danger' . $disabled,
+            __('form.delete'),
+            !Shift_signout_allowed($shift, $angeltype, $shift_entry->user_id)
+        );
         $entry .= '</div>';
     }
     return $entry;
diff --git a/resources/assets/themes/base.scss b/resources/assets/themes/base.scss
index c9018032..f0abc88c 100644
--- a/resources/assets/themes/base.scss
+++ b/resources/assets/themes/base.scss
@@ -102,6 +102,10 @@ a .icon-icon_angel {
   background-color: $link-color;
 }
 
+a .disabled {
+  pointer-events: none;
+}
+
 .navbar .icon-icon_angel {
   background-color: $nav-link-disabled-color;
 }
diff --git a/resources/lang/de_DE/default.po b/resources/lang/de_DE/default.po
index 652edbc1..d3c9b65e 100644
--- a/resources/lang/de_DE/default.po
+++ b/resources/lang/de_DE/default.po
@@ -2095,3 +2095,7 @@ msgstr "Es wurde noch kein Schichttyp erstellt. Ohne können keine Schichten ers
 
 msgid "admin_shifts.no_angeltypes"
 msgstr "Es wurde noch kein Engeltyp erstellt. Ohne können keine Schichten erstellt werden."
+
+msgid "shift.sign_out.hint"
+msgstr "Du kannst dich bis %s Stunden vor dem Start der Schicht austragen. "
+"Wenn du nicht zu deiner Schicht kommen kannst, lass dich vom Himmel austragen."
diff --git a/resources/lang/en_US/default.po b/resources/lang/en_US/default.po
index 30dd04e2..e45e758a 100644
--- a/resources/lang/en_US/default.po
+++ b/resources/lang/en_US/default.po
@@ -974,3 +974,7 @@ msgstr "No shift type has been created yet. Shifts can't be created without one.
 
 msgid "admin_shifts.no_angeltypes"
 msgstr "No angeltype has been created yet. Shifts can't be created without one."
+
+msgid "shift.sign_out.hint"
+msgstr "You can self sign out up to %s hours before the start of the shift. "
+"If you can't attend your shift, ask heaven to sign you out."