diff --git a/furniture-3d-system/scripts/install-oa-board-sync-timer.sh b/furniture-3d-system/scripts/install-oa-board-sync-timer.sh
index 705d72e5..51b84d00 100755
--- a/furniture-3d-system/scripts/install-oa-board-sync-timer.sh
+++ b/furniture-3d-system/scripts/install-oa-board-sync-timer.sh
@@ -28,7 +28,7 @@ fi
 
 cat >"$SERVICE_FILE" <<EOF
 [Unit]
-Description=Furniture OA new product board snapshot sync
+Description=Furniture OA new product board snapshot and overtime todo sync
 After=network-online.target
 Wants=network-online.target
 
@@ -40,14 +40,16 @@ EnvironmentFile=$APP_ENV
 # Reuse the HR read-only credentials from the existing employee-directory sync.
 # The leading '-' keeps the OA sync usable before that optional sync is installed.
 EnvironmentFile=-$HR_SYNC_ENV
-ExecStart=/bin/bash -lc 'cd "$APP_ROOT" && ./node_modules/.bin/tsx scripts/sync-oa-board.ts --apply'
+# Keep the todo scan after the snapshot refresh so each decision uses the newest OA state.
+# The global switch remains off by default and skips the todo scan until it is explicitly enabled.
+ExecStart=/bin/bash -lc 'set -euo pipefail; cd "$APP_ROOT"; ./node_modules/.bin/tsx scripts/sync-oa-board.ts --apply; case "\${DINGTALK_TODO_ENABLED:-false}" in 1|true|TRUE|yes|YES|on|ON) ./node_modules/.bin/tsx scripts/sync-oa-board-todos.ts ;; *) echo "DingTalk OA overtime todo dispatch is disabled; skipping." ;; esac'
 StandardOutput=journal
 StandardError=journal
 EOF
 
 cat >"$TIMER_FILE" <<EOF
 [Unit]
-Description=Refresh furniture OA new product board snapshot every 15 minutes
+Description=Refresh furniture OA board and dispatch enabled overtime todos every 15 minutes
 
 [Timer]
 OnBootSec=$SYNC_ON_BOOT_SEC