diff --git a/jetty-server/src/main/java/org/eclipse/jetty/server/AsyncContextEvent.java b/jetty-server/src/main/java/org/eclipse/jetty/server/AsyncContextEvent.java
index 4a6ad3db3ea..aa45d42d8d3 100644
--- a/jetty-server/src/main/java/org/eclipse/jetty/server/AsyncContextEvent.java
+++ b/jetty-server/src/main/java/org/eclipse/jetty/server/AsyncContextEvent.java
@@ -27,7 +27,6 @@ import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 
 import org.eclipse.jetty.server.handler.ContextHandler.Context;
-import org.eclipse.jetty.util.URIUtil;
 import org.eclipse.jetty.util.thread.Scheduler;
 
 public class AsyncContextEvent extends AsyncEvent implements Runnable
@@ -157,7 +156,7 @@ public class AsyncContextEvent extends AsyncEvent implements Runnable
         Scheduler.Task task=_timeoutTask;
         _timeoutTask=null;
         if (task!=null)
-            _state.onTimeout();
+            _state.getHttpChannel().execute(() -> _state.onTimeout());
     }
 
     public void addThrowable(Throwable e)
diff --git a/jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannelState.java b/jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannelState.java
index 5a819b8ef8d..7b7ac90010b 100644
--- a/jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannelState.java
+++ b/jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannelState.java
@@ -299,7 +299,7 @@ public class HttpChannelState
                         {
                             listener.onStartAsync(event);
                         }
-                        catch(Exception e)
+                        catch(Throwable e)
                         {
                             // TODO Async Dispatch Error
                             LOG.warn(e);
@@ -853,7 +853,7 @@ public class HttpChannelState
                             {
                                 listener.onComplete(event);
                             }
-                            catch(Exception e)
+                            catch(Throwable e)
                             {
                                 LOG.warn(e+" while invoking onComplete listener " + listener);
                                 LOG.debug(e);
diff --git a/jetty-servlet/src/test/java/org/eclipse/jetty/servlet/AsyncListenerTest.java b/jetty-servlet/src/test/java/org/eclipse/jetty/servlet/AsyncListenerTest.java
index f50b2ef9417..ae9b8e36338 100644
--- a/jetty-servlet/src/test/java/org/eclipse/jetty/servlet/AsyncListenerTest.java
+++ b/jetty-servlet/src/test/java/org/eclipse/jetty/servlet/AsyncListenerTest.java
@@ -32,12 +32,14 @@ import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.eclipse.jetty.http.HttpStatus;
-import org.eclipse.jetty.io.RuntimeIOException;
+import org.eclipse.jetty.http.HttpTester;
 import org.eclipse.jetty.server.LocalConnector;
 import org.eclipse.jetty.server.QuietServletException;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.server.handler.ErrorHandler;
+import org.eclipse.jetty.util.thread.QueuedThreadPool;
 import org.junit.After;
+import org.junit.Assert;
 import org.junit.Test;
 
 import static org.hamcrest.Matchers.containsString;
@@ -45,12 +47,13 @@ import static org.junit.Assert.assertThat;
 
 public class AsyncListenerTest
 {
+    private QueuedThreadPool threadPool;
     private Server server;
     private LocalConnector connector;
 
     public void startServer(ServletContextHandler context) throws Exception
     {
-        server = new Server();
+        server = threadPool == null ? new Server() : new Server(threadPool);
         connector = new LocalConnector(server);
         connector.setIdleTimeout(20 * 60 * 1000L);
         server.addConnector(connector);
@@ -407,6 +410,42 @@ public class AsyncListenerTest
         assertThat(httpResponse, containsString("DATA"));
     }
 
+    @Test
+    public void test_StartAsync_OnTimeout_CalledBy_PooledThread() throws Exception
+    {
+        String threadNamePrefix = "async_listener";
+        threadPool = new QueuedThreadPool();
+        threadPool.setName(threadNamePrefix);
+        ServletContextHandler context = new ServletContextHandler();
+        context.addServlet(new ServletHolder(new HttpServlet()
+        {
+            @Override
+            protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
+            {
+                AsyncContext asyncContext = request.startAsync();
+                asyncContext.setTimeout(1000);
+                asyncContext.addListener(new AsyncListenerAdapter()
+                {
+                    @Override
+                    public void onTimeout(AsyncEvent event) throws IOException
+                    {
+                        if (Thread.currentThread().getName().startsWith(threadNamePrefix))
+                            response.setStatus(HttpStatus.OK_200);
+                        else
+                            response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR_500);
+                        asyncContext.complete();
+                    }
+                });
+            }
+        }), "/*");
+        startServer(context);
+
+        HttpTester.Response response = HttpTester.parseResponse(connector.getResponse("" +
+                "GET / HTTP/1.1\r\n" +
+                "Host: localhost\r\n" +
+                "\r\n"));
+        Assert.assertEquals(HttpStatus.OK_200, response.getStatus());
+    }
 
     // Unique named RuntimeException to help during debugging / assertions.
     public static class TestRuntimeException extends RuntimeException