Sync changes v29.0.0 from IceHrmPro (https://icehrm.com/purchase-icehrmpro)

core/src/Employees/Common/Model/Employee.php

@@ -8,6 +8,7 @@ use Classes\ModuleAccess;
 use Company\Common\Model\CompanyStructure;
 use Metadata\Common\Model\Country;
 use Model\BaseModel;
+use Model\CustomFieldTrait;
 
 class Employee extends BaseModel
 {
@@ -90,6 +91,11 @@ class Employee extends BaseModel
         $this->oldObj = BaseService::getInstance()->getElement('Employee', $obj->id, $mapping, true);
     }
 
+    public function isCustomFieldsEnabled()
+    {
+        return true;
+    }
+
     private function saveHistory($obj)
     {