diff --git a/pqthreads/decorator.py b/pqthreads/decorator.py
index 8babfee..913155d 100644
--- a/pqthreads/decorator.py
+++ b/pqthreads/decorator.py
@@ -55,7 +55,7 @@ class Decorator: # pylint: disable=too-few-public-methods
     def __init__(self, decorator_class: DecoratorCore):
         self.decorator_class = decorator_class
 
-    def __call__(self, wrapped, **kwargs):
+    def __call__(self, wrapped=None, **kwargs):
         """ Enables usage with and without decorator keyword arguments """
         if wrapped is None:
             return functools.partial(self.__call__, **kwargs)
diff --git a/pqthreads/examples/worker.py b/pqthreads/examples/worker.py
index eeff047..f7f93a1 100644
--- a/pqthreads/examples/worker.py
+++ b/pqthreads/examples/worker.py
@@ -50,8 +50,20 @@ def graph(*args, **kwargs):
     return graph_worker
 
 
+global_kwargs = {}
+
+
 # Configure decorators
-DecoratorCore = decorator.DecoratorCore
-DecoratorCore.add_agent('figure', window.FigureWindow, FigureWorker)
-DecoratorCore.add_agent('graph', window.GraphWindow, GraphWorker)
-decorator_example = decorator.Decorator(DecoratorCore)
+class ExampleDecoratorCore(decorator.DecoratorCore):
+    """ Exemplary decorator core class, with extra testing functionality for
+    global keyword arguments """
+
+    def __init__(self, **dec_kwargs):
+        """ Reimplement this to make use of decorator's keyword arguments """
+        global_kwargs.update(dec_kwargs)
+        super().__init__(**dec_kwargs)
+
+
+ExampleDecoratorCore.add_agent('figure', window.FigureWindow, FigureWorker)
+ExampleDecoratorCore.add_agent('graph', window.GraphWindow, GraphWorker)
+decorator_example = decorator.Decorator(ExampleDecoratorCore)
diff --git a/tests/basic_test.py b/tests/basic_test.py
index e580c12..1ad8e46 100644
--- a/tests/basic_test.py
+++ b/tests/basic_test.py
@@ -121,3 +121,30 @@ def main():
 
     result = main()
     assert result == 'Test successful'
+
+
+def test_decorator_keyword_argument():
+    """ Test functionality of single decorator keyword argument """
+
+    @worker.decorator_example(keyword_argument='test')
+    def main():
+        """ Helper function """
+        fig = worker.figure()
+        fig.close()
+
+    main()
+    assert worker.global_kwargs['keyword_argument'] == 'test'
+
+
+def test_multiple_decorator_keyword_arguments():
+    """ Test functionality of multiple decorator keyword arguments """
+
+    @worker.decorator_example(first_kwarg='first_arg', second_kw='second_arg')
+    def main():
+        """ Helper function """
+        fig = worker.figure()
+        fig.close()
+
+    main()
+    assert worker.global_kwargs['first_kwarg'] == 'first_arg'
+    assert worker.global_kwargs['second_kw'] == 'second_arg'