diff --git a/src/XeroPHP/Models/Accounting/Organisation.php b/src/XeroPHP/Models/Accounting/Organisation.php
index 7c17550d..bbffc38f 100644
--- a/src/XeroPHP/Models/Accounting/Organisation.php
+++ b/src/XeroPHP/Models/Accounting/Organisation.php
@@ -225,7 +225,29 @@ class Organisation extends Remote\Model
     const ORGANISATION_TYPE_SOLETRADER = 'SOLETRADER';
 
     const ORGANISATION_TYPE_TRUST = 'TRUST';
-
+    
+    const ORGANISATION_CLASS_DEMO = 'DEMO';
+    
+    const ORGANISATION_CLASS_TRIAL = 'TRIAL';
+        
+    const ORGANISATION_CLASS_STARTER = 'STARTER';
+    
+    const ORGANISATION_CLASS_STANDARD = 'STANDARD';
+    
+    const ORGANISATION_CLASS_PREMIUM = 'PREMIUM';
+        
+    const ORGANISATION_CLASS_PREMIUM_20 = 'PREMIUM_20';
+           
+    const ORGANISATION_CLASS_PREMIUM_50 = 'PREMIUM_50';
+               
+    const ORGANISATION_CLASS_PREMIUM_100 = 'PREMIUM_100';
+    
+    const ORGANISATION_CLASS_GST_CASHBOOK = 'GST_CASHBOOK';
+    
+    const ORGANISATION_CLASS_NON_GST_CASHBOOK = 'NON_GST_CASHBOOK';
+    
+    const ORGANISATION_CLASS_ULTIMATE = 'ULTIMATE';
+    
     /**
      * Get the resource uri of the class (Contacts) etc.
      *