diff --git a/taskflow/engines/worker_based/worker.py b/taskflow/engines/worker_based/worker.py
index 5ac0cf4f2..4273af605 100644
--- a/taskflow/engines/worker_based/worker.py
+++ b/taskflow/engines/worker_based/worker.py
@@ -20,13 +20,13 @@ import socket
 import string
 import sys
 
-from concurrent import futures
 from oslo_utils import reflection
 
 from taskflow.engines.worker_based import endpoint
 from taskflow.engines.worker_based import server
 from taskflow import logging
 from taskflow import task as t_task
+from taskflow.types import futures
 from taskflow.utils import misc
 from taskflow.utils import threading_utils as tu
 from taskflow import version
@@ -77,23 +77,26 @@ class Worker(object):
         will be used to create tasks from.
     :param executor: custom executor object that can used for processing
         requests in separate threads (if not provided one will be created)
-    :param threads_count: threads count to be passed to the default executor
+    :param threads_count: threads count to be passed to the
+                          default executor (used only if an executor is not
+                          passed in)
     :param transport: transport to be used (e.g. amqp, memory, etc.)
     :param transport_options: transport specific options
     :param retry_options: retry specific options (used to configure how kombu
                           handles retrying under tolerable/transient failures).
     """
 
-    def __init__(self, exchange, topic, tasks, executor=None, **kwargs):
+    def __init__(self, exchange, topic, tasks,
+                 executor=None, threads_count=None, url=None,
+                 transport=None, transport_options=None,
+                 retry_options=None):
         self._topic = topic
         self._executor = executor
         self._owns_executor = False
         self._threads_count = -1
         if self._executor is None:
-            if 'threads_count' in kwargs:
-                self._threads_count = int(kwargs.pop('threads_count'))
-                if self._threads_count <= 0:
-                    raise ValueError("threads_count provided must be > 0")
+            if threads_count is not None:
+                self._threads_count = int(threads_count)
             else:
                 self._threads_count = tu.get_optimal_thread_count()
             self._executor = futures.ThreadPoolExecutor(self._threads_count)
@@ -101,7 +104,10 @@ class Worker(object):
         self._endpoints = self._derive_endpoints(tasks)
         self._exchange = exchange
         self._server = server.Server(topic, exchange, self._executor,
-                                     self._endpoints, **kwargs)
+                                     self._endpoints, url=url,
+                                     transport=transport,
+                                     transport_options=transport_options,
+                                     retry_options=retry_options)
 
     @staticmethod
     def _derive_endpoints(tasks):
diff --git a/taskflow/tests/unit/worker_based/test_worker.py b/taskflow/tests/unit/worker_based/test_worker.py
index a572beb47..cc4578c05 100644
--- a/taskflow/tests/unit/worker_based/test_worker.py
+++ b/taskflow/tests/unit/worker_based/test_worker.py
@@ -64,7 +64,11 @@ class TestWorker(test.MockTestCase):
         master_mock_calls = [
             mock.call.executor_class(self.threads_count),
             mock.call.Server(self.topic, self.exchange,
-                             self.executor_inst_mock, [], url=self.broker_url)
+                             self.executor_inst_mock, [],
+                             url=self.broker_url,
+                             transport_options=mock.ANY,
+                             transport=mock.ANY,
+                             retry_options=mock.ANY)
         ]
         self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
 
@@ -83,20 +87,23 @@ class TestWorker(test.MockTestCase):
             mock.call.executor_class(10),
             mock.call.Server(self.topic, self.exchange,
                              self.executor_inst_mock, [],
-                             url=self.broker_url)
+                             url=self.broker_url,
+                             transport_options=mock.ANY,
+                             transport=mock.ANY,
+                             retry_options=mock.ANY)
         ]
         self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
 
-    def test_creation_with_negative_threads_count(self):
-        self.assertRaises(ValueError, self.worker, threads_count=-10)
-
     def test_creation_with_custom_executor(self):
         executor_mock = mock.MagicMock(name='executor')
         self.worker(executor=executor_mock)
 
         master_mock_calls = [
             mock.call.Server(self.topic, self.exchange, executor_mock, [],
-                             url=self.broker_url)
+                             url=self.broker_url,
+                             transport_options=mock.ANY,
+                             transport=mock.ANY,
+                             retry_options=mock.ANY)
         ]
         self.assertEqual(self.master_mock.mock_calls, master_mock_calls)