diff --git a/CHANGELOG.md b/CHANGELOG.md
index b2dcc35..ec3c8ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Blender Cloud changelog
 
+## Version 1.15 (in development)
+
+- Avoid creating BAT pack when the to-be-rendered file is already inside the job storage
+  directory. This assumes that the paths are already correct for the Flamenco Workers.
+
+
 ## Version 1.14 (2019-10-10)
 
 - Upgraded BAT to 1.2 for missing smoke caches, compatibility with Blender 2.81, and some
diff --git a/blender_cloud/flamenco/__init__.py b/blender_cloud/flamenco/__init__.py
index 4d81326..3111686 100644
--- a/blender_cloud/flamenco/__init__.py
+++ b/blender_cloud/flamenco/__init__.py
@@ -240,6 +240,23 @@ def guess_output_file_extension(output_format: str, scene) -> str:
         return '.' + container.lower()
 
 
+def is_file_inside_job_storage(prefs, current_file: Path) -> bool:
+    """Check whether current blend file is inside the storage path.
+
+    :return: True when 'current_file' is inside the Flamenco
+        job storage directory already. In this case it won't be
+        BAT-packed, as it's assumed the job storage dir is
+        accessible by the workers already.
+    """
+    flamenco_job_file_path = Path(prefs.flamenco_job_file_path).absolute().resolve()
+    current_file = current_file.absolute().resolve()
+    try:
+        current_file.relative_to(flamenco_job_file_path)
+    except ValueError:
+        return False
+    return True
+
+
 @compatibility.convert_properties
 class FLAMENCO_OT_render(async_loop.AsyncModalOperatorMixin,
                          pillar.AuthenticatedPillarOperatorMixin,
@@ -596,6 +613,11 @@ class FLAMENCO_OT_render(async_loop.AsyncModalOperatorMixin,
             outfile = PurePath('{shaman}') / outfile
             return None, outfile, missing_sources
 
+        if is_file_inside_job_storage(prefs, filepath):
+            # The blend file is contained in the job storage path, no need to copy anything.
+            # Since BAT doesn't run, we also don't know whether files are missing.
+            return filepath.parent, filepath, []
+
         # Create a unique directory that is still more or less identifyable.
         # This should work better than a random ID.
         unique_dir = '%s-%s-%s' % (datetime.now().isoformat('-').replace(':', ''),
@@ -1043,6 +1065,12 @@ class FLAMENCO_PT_render(bpy.types.Panel, FlamencoPollMixin):
                                       text='', icon='DISK_DRIVE')
         props.path = prefs.flamenco_job_file_path
 
+
+        if is_file_inside_job_storage(prefs, Path(context.blend_data.filepath)):
+            # File is contained in the job storage path, no need to copy anything.
+            paths_layout.label(text='Current file already in job storage path; '
+                                'not going to create BAT pack.')
+
         render_output = render_output_path(context)
         if render_output is None:
             paths_layout.label(text='Unable to render with Flamenco, outside of project directory.')