diff --git a/supabase/migrations/20260312000000_add_leave_pass_slip_to_notifications.sql b/supabase/migrations/20260312000000_add_leave_pass_slip_to_notifications.sql
new file mode 100644
index 00000000..16ed98fc
--- /dev/null
+++ b/supabase/migrations/20260312000000_add_leave_pass_slip_to_notifications.sql
@@ -0,0 +1,8 @@
+-- Add reference columns so notifications can link to leave requests and pass slips.
+-- These allow the app to store leave_id/pass_slip_id in notifications (and send to clients).
+
+ALTER TABLE notifications
+  ADD COLUMN IF NOT EXISTS leave_id uuid REFERENCES leave_of_absence(id) ON DELETE CASCADE;
+
+ALTER TABLE notifications
+  ADD COLUMN IF NOT EXISTS pass_slip_id uuid REFERENCES pass_slips(id) ON DELETE CASCADE;