diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index 03e6277cd6..164642e1ad 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -151,7 +151,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ phpcs, jshint ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
diff --git a/.github/workflows/end-to-end-tests.yml b/.github/workflows/end-to-end-tests.yml
index fc41233eda..16ad0c0f99 100644
--- a/.github/workflows/end-to-end-tests.yml
+++ b/.github/workflows/end-to-end-tests.yml
@@ -121,7 +121,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ e2e-tests ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
diff --git a/.github/workflows/javascript-tests.yml b/.github/workflows/javascript-tests.yml
index 073f5bbd49..a13a3b095e 100644
--- a/.github/workflows/javascript-tests.yml
+++ b/.github/workflows/javascript-tests.yml
@@ -90,7 +90,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ test-js ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
diff --git a/.github/workflows/php-compatibility.yml b/.github/workflows/php-compatibility.yml
index 30b2f5f001..2121ddeb14 100644
--- a/.github/workflows/php-compatibility.yml
+++ b/.github/workflows/php-compatibility.yml
@@ -92,7 +92,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ php-compatibility ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
diff --git a/.github/workflows/phpunit-tests.yml b/.github/workflows/phpunit-tests.yml
index 22d98f3f4a..ef328a5761 100644
--- a/.github/workflows/phpunit-tests.yml
+++ b/.github/workflows/phpunit-tests.yml
@@ -247,7 +247,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ test-php ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
diff --git a/.github/workflows/slack-notifications.yml b/.github/workflows/slack-notifications.yml
index aa94445085..b75bc5b01d 100644
--- a/.github/workflows/slack-notifications.yml
+++ b/.github/workflows/slack-notifications.yml
@@ -118,7 +118,7 @@ jobs:
 
       - name: Construct payload and store as an output
         id: create-payload
-        run: echo "::set-output name=payload::{\"workflow_name\":\"${{ github.workflow }}\",\"ref_name\":\"${{ env.CURRENT_BRANCH }}\",\"run_url\":\"${{ github.event_name == 'workflow_run' && github.event.workflow_run.html_url || steps.current-workflow-url.outputs.result }}\",\"commit_message\":\"${{ steps.commit-message.outputs.commit_message_escaped }}\"}"
+        run: echo "::set-output name=payload::{\"workflow_name\":\"${{ github.event_name == 'workflow_run' && github.event.workflow_run.name || github.workflow }}\",\"ref_name\":\"${{ env.CURRENT_BRANCH }}\",\"run_url\":\"${{ github.event_name == 'workflow_run' && github.event.workflow_run.html_url || steps.current-workflow-url.outputs.result }}\",\"commit_message\":\"${{ steps.commit-message.outputs.commit_message_escaped }}\"}"
 
   # Posts notifications when a workflow fails.
   failure:
diff --git a/.github/workflows/test-coverage.yml b/.github/workflows/test-coverage.yml
index 7d3cdbcd3d..cbf18067e9 100644
--- a/.github/workflows/test-coverage.yml
+++ b/.github/workflows/test-coverage.yml
@@ -173,7 +173,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ test-coverage-report ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
diff --git a/.github/workflows/test-npm.yml b/.github/workflows/test-npm.yml
index d2af984d25..207882513a 100644
--- a/.github/workflows/test-npm.yml
+++ b/.github/workflows/test-npm.yml
@@ -159,7 +159,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ test-npm, test-npm-macos ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
diff --git a/.github/workflows/test-old-branches.yml b/.github/workflows/test-old-branches.yml
index 5d19130b26..7051b727d9 100644
--- a/.github/workflows/test-old-branches.yml
+++ b/.github/workflows/test-old-branches.yml
@@ -74,7 +74,7 @@ jobs:
     name: Slack Notifications
     uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@master
     needs: [ dispatch-workflows-for-old-branches ]
-    if: ${{ always() }}
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     secrets:
       SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
       SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}