diff --git a/api/Worker.json b/api/Worker.json
index c13bf02ea678a2..f99512699e4840 100644
--- a/api/Worker.json
+++ b/api/Worker.json
@@ -300,6 +300,44 @@
           }
         }
       },
+      "worker_support": {
+        "__compat": {
+          "description": "Available in workers",
+          "support": {
+            "chrome": {
+              "version_added": "69",
+              "partial_implementation": true,
+              "notes": "Not available in Shared Workers. See <a href='https://crbug.com/40695450'>bug 40695450</a>."
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "34"
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": "16.4",
+              "partial_implementation": true,
+              "notes": "Not available in Shared Workers. See <a href='https://webkit.org/b/265263'>bug 265263</a>."
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "error_event": {
         "__compat": {
           "description": "<code>error</code> event",