diff --git a/htdocs/compta/sociales/class/chargesociales.class.php b/htdocs/compta/sociales/class/chargesociales.class.php
index 85643d084ff..d007c7be573 100644
--- a/htdocs/compta/sociales/class/chargesociales.class.php
+++ b/htdocs/compta/sociales/class/chargesociales.class.php
@@ -53,8 +53,13 @@ class ChargeSociales extends CommonObject
      * {@inheritdoc}
      */
     protected $table_ref_field = 'ref';
-
+    
+    /**
+     * @var integer|string $date_ech
+     */
     public $date_ech;
+    
+    
     public $label;
     public $type;
     public $type_label;
@@ -67,8 +72,14 @@ class ChargeSociales extends CommonObject
      */
     public $date_creation;
 
-
+    /**
+     * @var integer|string $date_modification
+     */
     public $date_modification;
+    
+    /**
+     * @var integer|string $date_validation
+     */
     public $date_validation;
 
     /**