diff --git a/test/worker/application_worker.js b/test/worker/application_worker.js
new file mode 100644
index 00000000..6750434d
--- /dev/null
+++ b/test/worker/application_worker.js
@@ -0,0 +1,34 @@
+/* globals tryTests: true */
+
+const chai = require('chai');
+
+const { expect } = chai;
+
+tryTests('Application Worker', tests, {
+  if: typeof window !== 'undefined' && window.Worker && window.MessageChannel
+});
+
+function tests() {
+
+  it('Should support loading OpenPGP.js from inside a Web Worker', async function() {
+    const worker = new Worker('./worker/worker_example.js');
+    async function delegate(action, message) {
+      return new Promise((resolve, reject) => {
+        const channel = new MessageChannel();
+        channel.port1.onmessage = function({ data }) {
+          if (data.error !== undefined) {
+            reject(new Error(data.error));
+          } else {
+            resolve(data.result);
+          }
+        };
+        worker.postMessage({ action, message }, [channel.port2]);
+      });
+    }
+    const encrypted = await delegate('encrypt', 'Hello World!');
+    const decrypted = await delegate('decrypt', encrypted);
+    expect(decrypted).to.equal('Hello World!');
+    worker.terminate();
+  });
+
+}
diff --git a/test/worker/index.js b/test/worker/index.js
index 01751775..903babbc 100644
--- a/test/worker/index.js
+++ b/test/worker/index.js
@@ -1,4 +1,5 @@
 describe('Web Worker', function () {
   require('./async_proxy.js');
+  require('./application_worker.js');
 });
 
diff --git a/test/worker/worker_example.js b/test/worker/worker_example.js
new file mode 100644
index 00000000..b935ece5
--- /dev/null
+++ b/test/worker/worker_example.js
@@ -0,0 +1,77 @@
+importScripts('../../dist/openpgp.js');
+
+const publicKeyArmored = `-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: OpenPGP.js v4.7.2
+Comment: https://openpgpjs.org
+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+=jTkZ
+-----END PGP PUBLIC KEY BLOCK-----
+`;
+
+const privateKeyArmored = `-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: OpenPGP.js v4.7.2
+Comment: https://openpgpjs.org
+
+xYYEXh8OhhYJKwYBBAHaRw8BAQdAgfwsqplEv19tUU/CoJOsGiWhssumaO5p
+aFHmyl5hHpb+CQMIQGjCBRmnRL1g1x10ygKW8a29+2V7pGbRFShEi+92Y6Xa
+js3SmduC5K9T2Jnn3Mn1esoCA0gliMpakkWZm3B65J2axI8qo8RTGRnRP1Yp
+w80hRGFuaWVsIDxkLmh1aWdlbnNAcHJvdG9ubWFpbC5jb20+wngEEBYKACAF
+Al4fDoYGCwkHCAMCBBUICgIEFgIBAAIZAQIbAwIeAQAKCRDfdGbKAHMlakCu
+AQDsQbZx/jQH3b6iGHn6vob9gHPCDLQnGF1h4jpV5MuPAAEAgw7jk2fTSik7
+uAjueq7RUeRZYNEQoffMdxWSK2uldw3HiwReHw6GEgorBgEEAZdVAQUBAQdA
+rxntl6DipqnaDz5rEgxZoeaf51uwGMyOyx9GWRlHHWgDAQgH/gkDCNKsGYh3
+rcY5YKc2PzxhFexONEmwJ6Cq3KJ+nW9RbRDYb78aitaacLmWfuxNYu12OhKr
+DLwUsgyr8vXKg6yZcmNnpi0P1VYElfb4ECZABq/CYQQYFggACQUCXh8OhgIb
+DAAKCRDfdGbKAHMlao4oAP9Kvgt3F9nFURTlqtcSrWirEVoMV4jwgw9Uj+p6
+kvXSIgD/W5eYosdVqNXk0ldX/p6hpk5BWmW573H2ckPXmOQJ5wY=
+=lOCw
+-----END PGP PRIVATE KEY BLOCK-----
+`;
+
+onmessage = async function({ data: { action, message }, ports: [port] }) {
+  try {
+    let result;
+    switch (action) {
+      case 'encrypt': {
+        const { keys: publicKeys } = await openpgp.key.readArmored(publicKeyArmored);
+        const { keys: privateKeys } = await openpgp.key.readArmored(privateKeyArmored);
+        await privateKeys[0].decrypt('test');
+        const { data } = await openpgp.encrypt({
+          message: openpgp.message.fromText(message),
+          publicKeys,
+          privateKeys
+        });
+        result = data;
+        break;
+      }
+      case 'decrypt': {
+        const { keys: publicKeys } = await openpgp.key.readArmored(publicKeyArmored);
+        const { keys: privateKeys } = await openpgp.key.readArmored(privateKeyArmored);
+        await privateKeys[0].decrypt('test');
+        const { data, signatures } = await openpgp.decrypt({
+          message: await openpgp.message.readArmored(message),
+          publicKeys,
+          privateKeys
+        });
+        if (!signatures[0].valid) {
+          throw new Error("Couldn't veriy signature");
+        }
+        result = data;
+        break;
+      }
+    }
+    port.postMessage({ result });
+  } catch (e) {
+    console.error(e);
+    port.postMessage({ error: e.message });
+  }
+};