diff --git a/system1-factory/web/pages/attendance/monthly.html b/system1-factory/web/pages/attendance/monthly.html
index dfde07c..5ebd98e 100644
--- a/system1-factory/web/pages/attendance/monthly.html
+++ b/system1-factory/web/pages/attendance/monthly.html
@@ -797,7 +797,7 @@
         let totalOvertimeHours = 0;
 
         // 입사일 파싱
-        const joinDate = worker.join_date ? worker.join_date.split('T')[0].split(' ')[0] : null;
+        const joinDate = (worker.hire_date || worker.join_date) ? (worker.hire_date || worker.join_date).split('T')[0].split(' ')[0] : null;
 
         html += `<tr>`;
         html += `<td class="fixed fixed-no">${index + 1}</td>`;