diff --git a/buffet/commands/user_role.cc b/buffet/commands/user_role.cc
new file mode 100644
index 0000000..a9237ee
--- /dev/null
+++ b/buffet/commands/user_role.cc
@@ -0,0 +1,37 @@
+// Copyright 2014 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "buffet/commands/user_role.h"
+
+#include <chromeos/errors/error.h>
+
+#include "buffet/commands/enum_to_string.h"
+#include "buffet/commands/schema_constants.h"
+
+namespace buffet {
+
+template <>
+const EnumToString<UserRole>::Map EnumToString<UserRole>::kMap[] = {
+    {UserRole::kViewer, commands::attributes::kCommand_Role_Viewer},
+    {UserRole::kUser, commands::attributes::kCommand_Role_User},
+    {UserRole::kOwner, commands::attributes::kCommand_Role_Owner},
+    {UserRole::kManager, commands::attributes::kCommand_Role_Manager},
+};
+
+std::string ToString(UserRole role) {
+  return EnumToString<UserRole>::FindNameById(role);
+}
+
+bool FromString(const std::string& str,
+                UserRole* role,
+                chromeos::ErrorPtr* error) {
+  if (EnumToString<UserRole>::FindIdByName(str, role))
+    return true;
+  chromeos::Error::AddToPrintf(error, FROM_HERE, errors::commands::kDomain,
+                               errors::commands::kInvalidPropValue,
+                               "Invalid role: '%s'", str.c_str());
+  return false;
+}
+
+}  // namespace buffet