diff --git a/tests/test_workspace_profiles_sim.py b/tests/test_workspace_profiles_sim.py
new file mode 100644
index 0000000..13711fd
--- /dev/null
+++ b/tests/test_workspace_profiles_sim.py
@@ -0,0 +1,81 @@
+import pytest
+import time
+import sys
+import os
+from pathlib import Path
+
+# Ensure project root is in path for imports
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "src")))
+
+from src import api_hook_client
+
+@pytest.mark.integration
+def test_workspace_profiles_restoration(live_gui):
+ """
+ Verifies that workspace profiles can save and restore UI state.
+ 1. Sets a field (ui_separate_tier1) to True.
+ 2. Saves a workspace profile.
+ 3. Resets the field to False.
+ 4. Loads the workspace profile.
+ 5. Verifies the field is restored to True.
+ """
+ client = api_hook_client.ApiHookClient()
+ assert client.wait_for_server(timeout=20), "Hook server did not start"
+ 
+ # Ensure we are in a clean state
+ print("Ensuring clean state (ui_separate_tier1=False)...")
+ client.set_value('ui_separate_tier1', False)
+ time.sleep(1.0)
+ 
+ # 1. Set a field that is captured in workspace profiles
+ print("Setting ui_separate_tier1 to True...")
+ client.set_value('ui_separate_tier1', True)
+ 
+ # Wait for settle
+ time.sleep(1.0)
+ 
+ # Verify it is set
+ val_before = client.get_value('ui_separate_tier1')
+ print(f"Value before save: {val_before}")
+ assert val_before is True
+ 
+ # 2. Save workspace profile
+ print("Saving workspace profile 'test_restore'...")
+ # Using push_event to trigger custom_callback
+ client.push_event("custom_callback", {
+  "callback": "save_workspace_profile", 
+  "args": ["test_restore", "project"]
+ })
+ 
+ # Wait for save to complete and profiles to reload in the controller
+ time.sleep(2.0)
+ 
+ # 3. Change the field
+ print("Changing ui_separate_tier1 to False...")
+ client.set_value('ui_separate_tier1', False)
+ 
+ # Wait for settle
+ time.sleep(1.0)
+ 
+ # Verify it is changed
+ val_mid = client.get_value('ui_separate_tier1')
+ print(f"Value after change: {val_mid}")
+ assert val_mid is False
+ 
+ # 4. Load the profile
+ print("Loading workspace profile 'test_restore'...")
+ client.push_event("custom_callback", {
+  "callback": "load_workspace_profile", 
+  "args": ["test_restore"]
+ })
+ 
+ # Wait for load to apply
+ time.sleep(2.0)
+ 
+ # 5. Verify restoration
+ restored_value = client.get_value('ui_separate_tier1')
+ print(f"Restored value: {restored_value}")
+ assert restored_value is True
+ 
+ print("Workspace profile restoration test PASSED.")