diff --git a/src/pytfe/resources/policy_check.py b/src/pytfe/resources/policy_check.py
index affae777..26019cbb 100644
--- a/src/pytfe/resources/policy_check.py
+++ b/src/pytfe/resources/policy_check.py
@@ -43,7 +43,7 @@ def list(
         for d in jd.get("data", []):
             attrs = d.get("attributes", {})
             attrs["id"] = d.get("id")
-            attrs["run"] = d.get("relationships", {}).get("run", {})
+            attrs["run"] = d.get("relationships", {}).get("run", {}).get("data", {})
             items.append(PolicyCheck.model_validate(attrs))
         return PolicyCheckList(
             items=items,
@@ -66,7 +66,7 @@ def read(self, policy_check_id: str) -> PolicyCheck:
         d = jd.get("data", {})
         attrs = d.get("attributes", {})
         attrs["id"] = d.get("id")
-        attrs["run"] = d.get("relationships", {}).get("run", {})
+        attrs["run"] = d.get("relationships", {}).get("run", {}).get("data", {})
         return PolicyCheck.model_validate(attrs)
 
     def override(self, policy_check_id: str) -> PolicyCheck:
diff --git a/tests/units/test_policy_check.py b/tests/units/test_policy_check.py
new file mode 100644
index 00000000..354c54ea
--- /dev/null
+++ b/tests/units/test_policy_check.py
@@ -0,0 +1,121 @@
+"""Unit tests for the policy evaluation module."""
+
+from unittest.mock import Mock
+
+import pytest
+
+from pytfe._http import HTTPTransport
+from pytfe.errors import InvalidRunIDError
+from pytfe.models.policy_check import (
+    PolicyCheck,
+    PolicyCheckListOptions,
+    PolicyStatus,
+)
+from pytfe.resources.policy_check import PolicyChecks
+
+
+class TestPolicyChecks:
+    """Test the PolicyChecks service class."""
+
+    @pytest.fixture
+    def mock_transport(self):
+        """Create a mock HTTPTransport."""
+        return Mock(spec=HTTPTransport)
+
+    @pytest.fixture
+    def policy_checks_service(self, mock_transport):
+        """Create a PolicyChecks service with mocked transport."""
+        return PolicyChecks(mock_transport)
+
+    def test_list_validations(self, policy_checks_service):
+        """Test list method with invalid task stage ID."""
+
+        # Test empty run ID
+        with pytest.raises(InvalidRunIDError):
+            list(policy_checks_service.list(""))
+
+        # Test None run ID
+        with pytest.raises(InvalidRunIDError):
+            list(policy_checks_service.list(None))
+
+    def test_list_success_with_options(self, policy_checks_service, mock_transport):
+        """Test successful iteration with custom pagination options."""
+
+        mock_response_data = {
+            "data": [
+                {
+                    "id": "polchk-9VYRc9bpfJEsnwum",
+                    "type": "policy-checks",
+                    "attributes": {
+                        "result": {
+                            "result": False,
+                            "passed": 0,
+                            "total-failed": 1,
+                            "hard-failed": 0,
+                            "soft-failed": 1,
+                            "advisory-failed": 0,
+                            "duration-ms": 0,
+                            "sentinel": {},
+                        },
+                        "scope": "organization",
+                        "status": "soft_failed",
+                        "status-timestamps": {
+                            "queued-at": "2017-11-29T20:02:17+00:00",
+                            "soft-failed-at": "2017-11-29T20:02:20+00:00",
+                        },
+                        "actions": {"is-overridable": True},
+                        "permissions": {"can-override": True},
+                    },
+                    "relationships": {
+                        "run": {"data": {"id": "run-veDoQbv6xh6TbnJD", "type": "runs"}}
+                    },
+                    "links": {
+                        "output": "/api/v2/policy-checks/polchk-9VYRc9bpfJEsnwum/output"
+                    },
+                }
+            ]
+        }
+
+        mock_response = Mock()
+        mock_response.json.return_value = mock_response_data
+        mock_transport.request.return_value = mock_response
+
+        options = PolicyCheckListOptions(page_size=5)  # type: ignore
+        result = policy_checks_service.list("run-123", options=options)
+
+        # Verify the request was made with correct parameters
+        assert mock_transport.request.call_count == 1
+        call_args = mock_transport.request.call_args
+        assert call_args[0][0] == "GET"
+        assert call_args[0][1] == "/api/v2/runs/run-123/policy-checks"
+
+        # Verify custom options were passed and merged with _list defaults
+        params = call_args[1]["params"]
+        assert params["page[size]"] == 5  # Custom value from options
+
+        # Verify the result
+        print(type(result))
+        assert len(result.items) == 1
+        assert isinstance(result.items[0], PolicyCheck)
+        assert result.items[0].id == "polchk-9VYRc9bpfJEsnwum"
+        assert result.items[0].status == PolicyStatus.POLICY_SOFT_FAILED
+        assert result.items[0].result.advisory_failed == 0
+        assert result.items[0].result.total_failed == 1
+
+    def test_list_empty_result(self, policy_checks_service, mock_transport):
+        """Test iteration with no results."""
+
+        mock_response_data = {"data": []}
+
+        mock_response = Mock()
+        mock_response.json.return_value = mock_response_data
+        mock_transport.request.return_value = mock_response
+
+        result = policy_checks_service.list("run-empty")
+
+        # Verify the request was made
+        assert mock_transport.request.call_count == 1
+
+        # Verify iterator yields no items
+        assert len(result.items) == 0
+        assert result.items == []