diff --git a/application/controllers/Pages.php b/application/controllers/Pages.php
index a7a02ce..7bc9f21 100755
--- a/application/controllers/Pages.php
+++ b/application/controllers/Pages.php
@@ -451,11 +451,11 @@ class Pages extends CI_Controller {
 				$workerEventId = null;
 				$ownerEventId  = null;
 				if(!empty($worker->google_calendar_id)){
-					$workerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
+					$workerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $worker->google_calendar_id);
 				}
 				$evelinCalId = $this->config->item('gcal_evelin_calendar_id');
 				if(!empty($evelinCalId)){
-					$ownerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
+					$ownerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $evelinCalId);
 				}
 				$this->Service_model->updateBookingCalEvents($newBooking->booking_id, $workerEventId, $ownerEventId);
 			}
@@ -873,10 +873,10 @@ class Pages extends CI_Controller {
 		$newWorkerEventId = null;
 		$newOwnerEventId  = null;
 		if(!empty($worker->google_calendar_id)){
-			$newWorkerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
+			$newWorkerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $worker->google_calendar_id);
 		}
 		if(!empty($evelinCalId)){
-			$newOwnerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
+			$newOwnerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $evelinCalId);
 		}
 		$this->Service_model->updateBookingCalEvents($booking->booking_id, $newWorkerEventId, $newOwnerEventId);
 
diff --git a/application/libraries/GoogleCalendar.php b/application/libraries/GoogleCalendar.php
index 2b70d9c..8690036 100644
--- a/application/libraries/GoogleCalendar.php
+++ b/application/libraries/GoogleCalendar.php
@@ -27,19 +27,30 @@ class GoogleCalendar {
     }
 
     /**
-     * Create a calendar event.
+     * Create a calendar event and notify the attendee.
+     * @param  string      $calendarId     Calendar to insert into
+     * @param  string      $title
+     * @param  string      $description
+     * @param  string      $startDatetime  ISO 8601 (e.g. 2026-03-10T10:00:00)
+     * @param  string      $endDatetime
+     * @param  string|null $attendeeEmail  If set, added as attendee — triggers push notification + invite email
      * @return string|null  The new event ID, or null on failure.
      */
-    public function createEvent($calendarId, $title, $description, $startDatetime, $endDatetime) {
+    public function createEvent($calendarId, $title, $description, $startDatetime, $endDatetime, $attendeeEmail = null) {
         if (!$this->service || empty($calendarId)) return null;
         try {
-            $event = new Google_Service_Calendar_Event([
+            $eventData = [
                 'summary'     => $title,
                 'description' => $description,
                 'start'       => ['dateTime' => $startDatetime, 'timeZone' => 'Europe/Oslo'],
                 'end'         => ['dateTime' => $endDatetime,   'timeZone' => 'Europe/Oslo'],
-            ]);
-            $result = $this->service->events->insert($calendarId, $event);
+            ];
+            if (!empty($attendeeEmail)) {
+                $eventData['attendees'] = [['email' => $attendeeEmail]];
+            }
+            $event = new Google_Service_Calendar_Event($eventData);
+            $params = !empty($attendeeEmail) ? ['sendUpdates' => 'all'] : [];
+            $result = $this->service->events->insert($calendarId, $event, $params);
             return $result->getId();
         } catch (Exception $e) {
             return null;
@@ -47,10 +58,11 @@ class GoogleCalendar {
     }
 
     /**
-     * Update an existing calendar event.
+     * Update an existing calendar event and notify the attendee.
+     * @param  string|null $attendeeEmail  If set, added as attendee — triggers update notification
      * @return string|null  The event ID, or null on failure.
      */
-    public function updateEvent($calendarId, $eventId, $title, $description, $startDatetime, $endDatetime) {
+    public function updateEvent($calendarId, $eventId, $title, $description, $startDatetime, $endDatetime, $attendeeEmail = null) {
         if (!$this->service || empty($calendarId) || empty($eventId)) return null;
         try {
             $event = $this->service->events->get($calendarId, $eventId);
@@ -64,7 +76,11 @@ class GoogleCalendar {
                 'dateTime' => $endDatetime,
                 'timeZone' => 'Europe/Oslo',
             ]));
-            $result = $this->service->events->update($calendarId, $eventId, $event);
+            if (!empty($attendeeEmail)) {
+                $event->setAttendees([new Google_Service_Calendar_EventAttendee(['email' => $attendeeEmail])]);
+            }
+            $params = !empty($attendeeEmail) ? ['sendUpdates' => 'all'] : [];
+            $result = $this->service->events->update($calendarId, $eventId, $event, $params);
             return $result->getId();
         } catch (Exception $e) {
             return null;