diff --git a/admin_menu.api.php b/admin_menu.api.php
index 2d212fb..83d4068 100644
--- a/admin_menu.api.php
+++ b/admin_menu.api.php
@@ -162,3 +162,28 @@ function hook_admin_menu_cache_info() {
   );
   return $caches;
 }
+
+/**
+ * Alter the default admin menu access policy.
+ *
+ * By default, the admin menu can be displayed when the current user is granted
+ * with the 'access administration menu' permission. But a module can override
+ * this behavior by implementing this hook. A hook implementation should return.
+ * The access to administrative menu is granted if:
+ * - No modules returns a strict FALSE.
+ * - At least one module returns a strict TRUE.
+ * If no module returned either TRUE or FALSE, the 'access administration menu'
+ * permission is checked.
+ *
+ * @return bool|null
+ *   Boolean allowing or denying the access or NULL to let other modules to act.
+ */
+function hook_admin_menu_access() {
+  global $user;
+  if ($user->is_manager) {
+    // Managers are able to access the administrative menu.
+    return TRUE;
+  }
+
+  // Don't return nothing. We let other modules to take the decision.
+}
diff --git a/admin_menu.module b/admin_menu.module
index 21bff9f..fc34162 100644
--- a/admin_menu.module
+++ b/admin_menu.module
@@ -66,7 +66,7 @@ function admin_menu_menu() {
   $items['js/admin_menu/cache'] = array(
     'page callback' => 'admin_menu_js_cache',
     'delivery callback' => 'admin_menu_deliver',
-    'access arguments' => array('access administration menu'),
+    'access callback' => 'admin_menu_access_admin_menu',
     'type' => MENU_CALLBACK,
   );
   // Module settings.
@@ -147,7 +147,7 @@ function admin_menu_system_info_alter(&$info, $file, $type) {
  * Implements hook_page_build().
  */
 function admin_menu_page_build(&$page) {
-  if (!user_access('access administration menu') || admin_menu_suppress(FALSE)) {
+  if (!admin_menu_access_admin_menu() || admin_menu_suppress(FALSE)) {
     return;
   }
   // Performance: Skip this entirely for AJAX requests.
@@ -241,6 +241,27 @@ function admin_menu_page_build(&$page) {
 }
 
 /**
+ * Provides an access callback for accessing the administrative menu.
+ *
+ * @return bool
+ *   TRUE if the access is permitted.
+ */
+function admin_menu_access_admin_menu() {
+  $access = module_invoke_all('admin_menu_access');
+  if (in_array(FALSE, $access, TRUE)) {
+    // If at least one module denies, then deny.
+    return FALSE;
+  }
+  elseif (in_array(TRUE, $access, TRUE)) {
+    // If no one denies and at least one grants, the allow.
+    return TRUE;
+  }
+
+  // Fall back to permission setting.
+  return user_access('access administration menu');
+}
+
+/**
  * Suppress display of administration menu.
  *
  * This function should be called from within another module's page callback