diff --git a/app/controllers/controller.js b/app/controllers/controller.js
index 6c274f5..a91561a 100644
--- a/app/controllers/controller.js
+++ b/app/controllers/controller.js
@@ -340,6 +340,7 @@ angular.module("umbraco").controller("Imulus.ArchetypeController", function ($sc
             }
             
             $scope.focusFieldset(newFieldset);
+            $scope.handleMandatoryValidation();
         }
     }
 
@@ -349,6 +350,7 @@ angular.module("umbraco").controller("Imulus.ArchetypeController", function ($sc
                 $scope.setDirty();
                 $scope.model.value.fieldsets.splice($index, 1);
                 $scope.$broadcast("archetypeRemoveFieldset", {index: $index});
+                $scope.handleMandatoryValidation();
             }
         }
     }
@@ -808,6 +810,20 @@ angular.module("umbraco").controller("Imulus.ArchetypeController", function ($sc
         });
     });
 
+    $scope.$on("formSubmitting", function (ev, args) {
+        $scope.handleMandatoryValidation();
+    });
+
+    // handle mandatory validation of the entire Archetype
+    // - no fieldsets = not valid
+    $scope.handleMandatoryValidation = function () {
+        var valid = true;
+        if ($scope.model.validation && $scope.model.validation.mandatory) {
+            valid = $scope.model.value.fieldsets && $scope.model.value.fieldsets.length > 0;
+        }
+        $scope.model.mandatoryValidation = valid ? "valid" : null;
+    }
+
     function toUtc(date) {
         if (!date) {
             return null;
diff --git a/app/views/archetype.default.html b/app/views/archetype.default.html
index f3b8baf..0d3d229 100644
--- a/app/views/archetype.default.html
+++ b/app/views/archetype.default.html
@@ -10,6 +10,10 @@
         </a>
     </div>
 
+    <!-- Mandatory validation. -->
+    <input type="hidden" name="archetypeMandatory" ng-model="model.mandatoryValidation" ng-required="model.validation.mandatory" />
+    <span class="help-inline" val-msg-for="archetypeMandatory" val-toggle-msg="required">Required</span>
+
     <!-- Fieldsets. -->
     <ul ui-sortable="sortableOptions" class="archetypeSortable" ng-class="{archetypeEmpty: model.value.fieldsets.length === 0 || sortingLastItem()}" ng-model="model.value.fieldsets">
         <li ng-repeat="fieldset in model.value.fieldsets">