diff --git a/app/models/__init__.py b/app/models/__init__.py
index 6034f4fb3..3a01e8a81 100644
--- a/app/models/__init__.py
+++ b/app/models/__init__.py
@@ -75,13 +75,8 @@ class ModelList(ABC, Sequence):
     def __add__(self, other):
         return list(self) + list(other)
 
-
-class EmptyModelList(ModelList):
-
-    client_method = model = None
-
-    def __init__(self, *args):
-        self.items = []
+    def __radd__(self, other):
+        return list(other) + list(self)
 
 
 class InviteTokenError(Exception):
diff --git a/app/models/service.py b/app/models/service.py
index 0ee6217b0..132ac157c 100644
--- a/app/models/service.py
+++ b/app/models/service.py
@@ -5,7 +5,7 @@ from flask import abort, current_app
 from notifications_utils.timezones import local_timezone
 from werkzeug.utils import cached_property
 
-from app.models import EmptyModelList, JSONModel
+from app.models import JSONModel
 from app.models.job import (
     ImmediateJobs,
     PaginatedJobs,
@@ -123,13 +123,13 @@ class Service(JSONModel):
     @cached_property
     def immediate_jobs(self):
         if not self.has_jobs:
-            return EmptyModelList()
+            return []
         return ImmediateJobs(self.id)
 
     @cached_property
     def scheduled_jobs(self):
         if not self.has_jobs:
-            return EmptyModelList()
+            return []
         return ScheduledJobs(self.id)
 
     @cached_property