diff --git a/app/assets/javascripts/discourse/components/site-header.js.es6 b/app/assets/javascripts/discourse/components/site-header.js.es6
index bf66453c67f..9285f5355b8 100644
--- a/app/assets/javascripts/discourse/components/site-header.js.es6
+++ b/app/assets/javascripts/discourse/components/site-header.js.es6
@@ -47,6 +47,12 @@ const SiteHeaderComponent = MountWidget.extend(Docking, {
     this.queueRerender();
   },
 
+  willRender() {
+    if (this.get('currentUser.staff')) {
+      $('body').addClass('staff');
+    }
+  },
+
   didInsertElement() {
     this._super();
     $(window).on('resize.discourse-menu-panel', () => this.afterRender());