diff --git a/og.module b/og.module
index da90f9068718f985ed943eff81158714eaa4310b..6e626c451700d24f56084b710ccb10207fe6bb59 100644
--- a/og.module
+++ b/og.module
@@ -2931,7 +2931,7 @@ function og_role_grant($group_type, $gid, $uid, $rid) {
     return;
   }
 
-  // Get the existiong user roles.
+  // Get the existing user roles.
   $user_roles = og_get_user_roles($group_type, $gid, $uid);
   if (empty($user_roles[$rid])) {
     $role = new stdClass();
@@ -2943,6 +2943,10 @@ function og_role_grant($group_type, $gid, $uid, $rid) {
     drupal_write_record('og_users_roles', $role);
     og_invalidate_cache();
     module_invoke_all('og_role_grant', $group_type, $gid, $uid, $rid);
+
+    if (module_exists('rules'))  {
+      rules_invoke_event('og_role_grant', og_get_membership($group_type, $gid, 'user', $uid), entity_metadata_wrapper('user', $uid), $rid);
+    }
   }
 }
 
@@ -2968,6 +2972,10 @@ function og_role_revoke($group_type, $gid, $uid, $rid) {
       ->condition('gid', $gid)
       ->execute();
     module_invoke_all('og_role_revoke', $group_type, $gid, $uid, $rid);
+
+    if (module_exists('rules'))  {
+      rules_invoke_event('og_role_revoke', og_get_membership($group_type, $gid, 'user', $uid), entity_metadata_wrapper('user', $uid), $rid);
+    }
   }
 }
 
diff --git a/og.rules.inc b/og.rules.inc
index ccfa6e3ec5fba33b4fe1db349ab3bde0e071ea5f..4f95deb2c39b35375c76e1e27fee38acb3809415 100644
--- a/og.rules.inc
+++ b/og.rules.inc
@@ -41,8 +41,30 @@ function og_rules_event_info() {
     'og_user_delete' => $defaults + array(
       'label' => t('User has been removed from group'),
       'help' => t("A user has been removed from group and is no longer a group member."),
-   ),
- );
+    ),
+    'og_role_grant' => array_merge_recursive($defaults, array(
+      'label' => t('OG role granted to user'),
+      'help' => t("An OG role has been granted to this user."),
+      'variables' => array(
+        'og_rid' => array(
+          'type' => 'integer',
+          'label' => t('OG role ID'),
+          'description' => t('The id of the OG user role.'),
+        ),
+      ),
+    )),
+    'og_role_revoke' => array_merge_recursive($defaults, array(
+      'label' => t('OG role revoked from user'),
+      'help' => t("An OG role has been revoked from this user."),
+      'variables' => array(
+        'og_rid' => array(
+          'type' => 'integer',
+          'label' => t('OG role ID'),
+          'description' => t('The id of the OG user role.'),
+        ),
+      ),
+    )),
+  );
 }
 
 /**