diff --git a/rq/cli/cli.py b/rq/cli/cli.py
old mode 100755
new mode 100644
diff --git a/rq/job.py b/rq/job.py
index c7bc7a7a..d1439d68 100644
--- a/rq/job.py
+++ b/rq/job.py
@@ -254,6 +254,7 @@ class Job:
                 on_success = Callback(on_success)  # backward compatibility
             job._success_callback_name = on_success.name
             job._success_callback_timeout = on_success.timeout
+            job._success_callback_params = on_success.params
 
         if on_failure:
             if not isinstance(on_failure, Callback):
@@ -637,6 +638,7 @@ class Job:
         self._args = UNEVALUATED
         self._kwargs = UNEVALUATED
         self._success_callback_name = None
+        self._success_callback_params = None
         self._success_callback = UNEVALUATED
         self._failure_callback_name = None
         self._failure_callback = UNEVALUATED
@@ -942,6 +944,9 @@ class Job:
         if obj.get('success_callback_name'):
             self._success_callback_name = obj.get('success_callback_name').decode()
 
+        if obj.get('success_callback_params'):
+            self._success_callback_params = json.loads(obj.get('success_callback_params').decode())
+
         if 'success_callback_timeout' in obj:
             self._success_callback_timeout = int(obj.get('success_callback_timeout'))
 
@@ -1018,6 +1023,8 @@ class Job:
             'worker_name': self.worker_name or '',
         }
 
+        if self._success_callback_params is not None:
+            obj['success_callback_params'] = json.dumps(self._success_callback_params)
         if self.retries_left is not None:
             obj['retries_left'] = self.retries_left
         if self.retry_intervals is not None:
@@ -1418,7 +1425,7 @@ class Job:
 
         logger.debug('Running success callbacks for %s', self.id)
         with death_penalty_class(self.success_callback_timeout, JobTimeoutException, job_id=self.id):
-            self.success_callback(self, self.connection, result)
+            self.success_callback(self, self.connection, result, self._success_callback_params)
 
     def execute_failure_callback(self, death_penalty_class: Type[BaseDeathPenalty], *exc_info):
         """Executes failure_callback with possible timeout"""
@@ -1645,12 +1652,13 @@ class Retry:
 
 
 class Callback:
-    def __init__(self, func: Union[str, Callable[..., Any]], timeout: Optional[Any] = None):
+    def __init__(self, func: Union[str, Callable[..., Any]], timeout: Optional[Any] = None, params: Optional[Dict[str, Any]] = None):
         if not isinstance(func, str) and not inspect.isfunction(func) and not inspect.isbuiltin(func):
             raise ValueError('Callback `func` must be a string or function')
 
         self.func = func
         self.timeout = parse_timeout(timeout) if timeout else CALLBACK_TIMEOUT
+        self.params = params 
 
     @property
     def name(self) -> str:
diff --git a/rq/worker.py b/rq/worker.py
index e6751352..55b27c8e 100644
--- a/rq/worker.py
+++ b/rq/worker.py
@@ -1472,6 +1472,7 @@ class Worker(BaseWorker):
             timeout = job.timeout or self.queue_class.DEFAULT_TIMEOUT
             with self.death_penalty_class(timeout, JobTimeoutException, job_id=job.id):
                 self.log.debug('Performing Job...')
+                self.log.debug(f"custom job params: {job._success_callback_params}")
                 rv = job.perform()
                 self.log.debug('Finished performing Job ID %s', job.id)