diff --git a/src/components/common/EmployeeList.tsx b/src/components/common/EmployeeList.tsx
index 89e7a43..618efa1 100644
--- a/src/components/common/EmployeeList.tsx
+++ b/src/components/common/EmployeeList.tsx
@@ -59,9 +59,9 @@ export default function EmployeeList(props: EmployeeListProps) {
   const filteredEmployees = employeeData.filter(
     (employee) => {
       const matchesSearch = 
-        employee.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
-        employee.email.toLowerCase().includes(searchTerm.toLowerCase()) ||
-        employee.phone.toLowerCase().includes(searchTerm.toLowerCase());
+        (employee.name?.toLowerCase() || '').includes(searchTerm.toLowerCase()) ||
+        (employee.email?.toLowerCase() || '').includes(searchTerm.toLowerCase()) ||
+        (employee.phone?.toLowerCase() || '').includes(searchTerm.toLowerCase());
       
       return matchesSearch;
     }
diff --git a/src/components/vehicles/VehicleAddModal.tsx b/src/components/vehicles/VehicleAddModal.tsx
index c999d4b..0bd38b7 100644
--- a/src/components/vehicles/VehicleAddModal.tsx
+++ b/src/components/vehicles/VehicleAddModal.tsx
@@ -290,7 +290,7 @@ export default function VehicleAddModal({ isOpen, onClose, onComplete }: Vehicle
                             총 주행거리 (km)
                           </label>
                           <input
-                            type="number"
+                            type="text"
                             id="mileage"
                             value={newVehicle.mileage}
                             onChange={(e) => handleInputChange('mileage', e.target.value)}
@@ -350,7 +350,7 @@ export default function VehicleAddModal({ isOpen, onClose, onComplete }: Vehicle
                           배터리 전력 (V)
                         </label>
                         <input
-                          type="number"
+                          type="text"
                           id="batteryVoltage"
                           value={newVehicle.batteryVoltage}
                           onChange={(e) => handleInputChange('batteryVoltage', e.target.value)}