diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 3347273c9..0e37ae466 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -20,8 +20,18 @@ defaults:
     shell: bash
 
 concurrency:
-  # At most 1 job per branch. Auto cancel all but scheduled jobs
-  group: ${{ github.workflow }}-${{ github.ref }}
+  # At most 1 job per branch. Auto cancel all but scheduled jobs.
+  # Label events that do not concern the 'pr: dev-coverage' label are given a
+  # unique concurrency group, so they do not cancel a run that is in progress.
+  # This way adding the label starts a run, removing it cancels the in-progress
+  # run, and any other label change has no effect. Note such an event still
+  # creates a run of this workflow, which is skipped, and would then hide the
+  # one in progress on the pull request. 'pr-run-cleanup.yml' deletes those.
+  group: >-
+    ${{ github.workflow }}-${{ github.ref }}-${{
+    (github.event.action == 'labeled' || github.event.action == 'unlabeled')
+    && github.event.label.name != 'pr: dev-coverage'
+    && github.run_id || 'shared' }}
   cancel-in-progress: ${{ github.event_name != 'schedule' }}
 
 jobs:
@@ -29,13 +39,17 @@ jobs:
   build:
     name: Build
     # Only run scheduled jobs if explicitly enabled for that repo (e.g.: not on forks)
-    # Only run pull request jobs if labelled as needing an coverage run
+    # Only run pull request jobs if labelled as needing a coverage run
     # Always run workflow dispatch jobs
     if: |
       (github.event_name == 'schedule'
         && vars.ENABLE_SCHEDULED_JOBS == 'true') ||
       (github.event_name == 'pull_request'
-        && contains(github.event.pull_request.labels.*.name, 'pr: dev-coverage')) ||
+        && ((github.event.action == 'labeled'
+             && github.event.label.name == 'pr: dev-coverage')
+            || (github.event.action != 'labeled'
+                && github.event.action != 'unlabeled'
+                && contains(github.event.pull_request.labels.*.name, 'pr: dev-coverage')))) ||
       (github.event_name == 'workflow_dispatch')
     uses: ./.github/workflows/reusable-build.yml
     with:
diff --git a/.github/workflows/rtlmeter.yml b/.github/workflows/rtlmeter.yml
index e4d6bd504..55ad8530d 100644
--- a/.github/workflows/rtlmeter.yml
+++ b/.github/workflows/rtlmeter.yml
@@ -22,8 +22,18 @@ defaults:
     shell: bash
 
 concurrency:
-  # At most 1 job per branch. Auto cancel all but scheduled jobs
-  group: ${{ github.workflow }}-${{ github.ref }}
+  # At most 1 job per branch. Auto cancel all but scheduled jobs.
+  # Label events that do not concern the 'pr: rtlmeter' label are given a
+  # unique concurrency group, so they do not cancel a run that is in progress.
+  # This way adding the label starts a run, removing it cancels the in-progress
+  # run, and any other label change has no effect. Note such an event still
+  # creates a run of this workflow, which is skipped, and would then hide the
+  # one in progress on the pull request. 'pr-run-cleanup.yml' deletes those.
+  group: >-
+    ${{ github.workflow }}-${{ github.ref }}-${{
+    (github.event.action == 'labeled' || github.event.action == 'unlabeled')
+    && github.event.label.name != 'pr: rtlmeter'
+    && github.run_id || 'shared' }}
   cancel-in-progress: ${{ github.event_name != 'schedule' }}
 
 jobs:
@@ -36,7 +46,11 @@ jobs:
       (github.event_name == 'schedule'
         && vars.ENABLE_SCHEDULED_JOBS == 'true') ||
       (github.event_name == 'pull_request'
-        && contains(github.event.pull_request.labels.*.name, 'pr: rtlmeter')) ||
+        && ((github.event.action == 'labeled'
+             && github.event.label.name == 'pr: rtlmeter')
+            || (github.event.action != 'labeled'
+                && github.event.action != 'unlabeled'
+                && contains(github.event.pull_request.labels.*.name, 'pr: rtlmeter')))) ||
       (github.event_name == 'workflow_dispatch') ||
       (github.event_name == 'push')
     runs-on: ubuntu-26.04