diff --git a/.github/workflows/ontology-pages.yml b/.github/workflows/ontology-pages.yml
index 383600baa..a4c911dc7 100644
--- a/.github/workflows/ontology-pages.yml
+++ b/.github/workflows/ontology-pages.yml
@@ -38,6 +38,8 @@ permissions:
   contents: read
 
 concurrency:
+  # Pull-request lifecycle events share the PR-scoped group: Draft/closed
+  # transitions skip validation while cancelling any older active validation.
   group: ${{ github.workflow }}-${{ github.repository }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.run_id }}
   cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
diff --git a/.github/workflows/prov-o-contract.yml b/.github/workflows/prov-o-contract.yml
index 008f73405..6f24a61c7 100644
--- a/.github/workflows/prov-o-contract.yml
+++ b/.github/workflows/prov-o-contract.yml
@@ -29,6 +29,8 @@ permissions:
   contents: read
 
 concurrency:
+  # Draft/closed events intentionally skip the product job but retain the
+  # workflow event needed to cancel an older active run for this same PR.
   group: ${{ github.workflow }}-${{ github.repository }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.run_id }}
   cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b82226a7e..635495d23 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,9 +10,8 @@ permissions:
   contents: read
 
 concurrency:
-  # A merged pull request can report the base ref on ``closed``. Keying PR
-  # events by number lets that close run cancel an older queued synchronize
-  # run for the same PR instead of consuming runners after the PR is closed.
+  # Draft/closed events deliberately create a no-job run in this workflow so
+  # workflow-level concurrency can cancel any older active run for the same PR.
   group: ${{ github.workflow }}-${{ github.repository }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.run_id }}
   cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
diff --git a/tests/test_tests_workflow_contract.py b/tests/test_tests_workflow_contract.py
index b0953f6f9..d32cc5624 100644
--- a/tests/test_tests_workflow_contract.py
+++ b/tests/test_tests_workflow_contract.py
@@ -17,15 +17,23 @@
     "converted_to_draft, closed]"
 )
 _DRAFT_ADMISSION = "github.event.pull_request.draft == false"
+_INACTIVE_ADMISSION = (
+    "github.event.action != 'closed' && github.event.pull_request.draft == false"
+)
 
 
-def test_pull_request_concurrency_survives_closed_ref_change() -> None:
-    """Key synchronize and closed events by PR number so close cancels stale work."""
-
-    workflow = (_WORKFLOW_DIRECTORY / "tests.yml").read_text(encoding="utf-8")
+def test_lifecycle_events_cancel_inactive_pr_work() -> None:
+    """Keep lifecycle events so Draft/close transitions cancel active local work."""
 
-    assert _PULL_REQUEST_TYPES in workflow
-    assert workflow.count("github.event.action != 'closed'") == 2
+    expected_inactive_guards = {
+        "tests.yml": 2,
+        "prov-o-contract.yml": 1,
+        "ontology-pages.yml": 1,
+    }
+    for workflow_name, expected_guard_count in expected_inactive_guards.items():
+        workflow = (_WORKFLOW_DIRECTORY / workflow_name).read_text(encoding="utf-8")
+        assert _PULL_REQUEST_TYPES in workflow, workflow_name
+        assert workflow.count(_INACTIVE_ADMISSION) == expected_guard_count, workflow_name
 
 
 def test_pull_request_workflows_cancel_only_superseded_same_pr_runs() -> None: