diff --git a/frontend/src/pages/Roster.tsx b/frontend/src/pages/Roster.tsx
index b41544c..c934f03 100644
--- a/frontend/src/pages/Roster.tsx
+++ b/frontend/src/pages/Roster.tsx
@@ -917,7 +917,11 @@ export default function Roster() {
                       })()}
                     </td>}
                     {colVisible('socialInsBase') && <td className="px-4 py-2.5 text-right text-xs">
-                      {e.socialInsBase ? e.socialInsBase.toLocaleString() : <span className="text-gray-300">—</span>}
+                      {(() => {
+                        const ct = e.latestContract?.contractType
+                        if (!ct || ['LABOR', 'INTERNSHIP', 'PARTTIME', 'OUTSOURCING', 'UNSIGNED'].includes(ct)) return <span className="text-gray-300">—</span>
+                        return e.socialInsBase ? e.socialInsBase.toLocaleString() : <span className="text-gray-300">—</span>
+                      })()}
                     </td>}
                     {colVisible('socialInsAmount') && <td className="px-4 py-2.5 text-right">
                       {(() => {