diff --git a/.changeset/cuddly-pants-rule.md b/.changeset/cuddly-pants-rule.md
new file mode 100644
index 0000000000..f8205a27ec
--- /dev/null
+++ b/.changeset/cuddly-pants-rule.md
@@ -0,0 +1,5 @@
+---
+"@openproject/primer-view-components": patch
+---
+
+[62820] Primer Alpha::ToggleSwitch locale support, set default values for On and Off labels
diff --git a/app/components/primer/alpha/toggle_switch.rb b/app/components/primer/alpha/toggle_switch.rb
index a1971a4463..96fd419a12 100644
--- a/app/components/primer/alpha/toggle_switch.rb
+++ b/app/components/primer/alpha/toggle_switch.rb
@@ -84,8 +84,8 @@ def initialize(
 
         @system_arguments[:src] = @src if @src
 
-        @on_label  = on_label  || "On"
-        @off_label = off_label || "Off"
+        @on_label  = on_label  || I18n.t("toggle_switch.label_on")
+        @off_label = off_label || I18n.t("toggle_switch.label_off")
       end
 
       def on?
diff --git a/config/locales/en.yml b/config/locales/en.yml
index b6801c19bf..5ab9a1fa97 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -15,6 +15,10 @@ en:
     include_sub_items: "Include sub-items"
     no_results_text: "No results"
 
+  toggle_switch:
+    label_on: "On"
+    label_off: "Off"
+
   label_title: "Title"
   label_loading: "Loading..."
   label_more: "More"