diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index c6249f97de..1b9342e477 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -27,6 +27,8 @@ jobs:
   phpcs:
     name: PHP coding standards
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -85,8 +87,10 @@ jobs:
   jshint:
     name: JavaScript coding standards
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
     env:
       PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: ${{ true }}
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
diff --git a/.github/workflows/end-to-end-tests.yml b/.github/workflows/end-to-end-tests.yml
index 4ff702b4ef..ec7e2b970e 100644
--- a/.github/workflows/end-to-end-tests.yml
+++ b/.github/workflows/end-to-end-tests.yml
@@ -34,6 +34,8 @@ jobs:
   e2e-tests:
     name: E2E Tests
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
+
     steps:
       - name: Cancel previous runs of this workflow (pull requests only)
         if: ${{ github.event_name == 'pull_request' }}
diff --git a/.github/workflows/javascript-tests.yml b/.github/workflows/javascript-tests.yml
index 508717a08f..54ccc47931 100644
--- a/.github/workflows/javascript-tests.yml
+++ b/.github/workflows/javascript-tests.yml
@@ -23,6 +23,8 @@ jobs:
   test-js:
     name: QUnit Tests
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
+
     steps:
       - name: Cancel previous runs of this workflow (pull requests only)
         if: ${{ github.event_name == 'pull_request' }}
diff --git a/.github/workflows/php-compatibility.yml b/.github/workflows/php-compatibility.yml
index b2d45384e8..a3915189ab 100644
--- a/.github/workflows/php-compatibility.yml
+++ b/.github/workflows/php-compatibility.yml
@@ -27,6 +27,7 @@ jobs:
   php-comatibility:
     name: Check PHP compatibility
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
 
     steps:
       - name: Checkout repository
diff --git a/.github/workflows/phpunit-tests.yml b/.github/workflows/phpunit-tests.yml
index 02f374e89a..d90a671ed2 100644
--- a/.github/workflows/phpunit-tests.yml
+++ b/.github/workflows/phpunit-tests.yml
@@ -35,6 +35,7 @@ jobs:
   setup-wordpress:
     name: Setup WordPress
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
 
     steps:
       - name: Cancel previous runs of this workflow (pull requests only)
diff --git a/.github/workflows/verify-npm-on-windows.yml b/.github/workflows/verify-npm-on-windows.yml
index 2d4a9c4323..598e982fd7 100644
--- a/.github/workflows/verify-npm-on-windows.yml
+++ b/.github/workflows/verify-npm-on-windows.yml
@@ -24,6 +24,8 @@ jobs:
   test-npm:
     name: Tests NPM on Windows
     runs-on: windows-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
+
     steps:
       - name: Cancel previous runs of this workflow (pull requests only)
         if: ${{ github.event_name == 'pull_request' }}
diff --git a/.github/workflows/welcome-new-contributors.yml b/.github/workflows/welcome-new-contributors.yml
index 74c9118a81..2522a5c4c2 100644
--- a/.github/workflows/welcome-new-contributors.yml
+++ b/.github/workflows/welcome-new-contributors.yml
@@ -8,6 +8,7 @@ jobs:
   # Comments on a pull request when the author is a new contributor.
   post-welcome-message:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'WordPress/wordpress-develop' }}
 
     steps:
       - uses: bubkoo/welcome-action@v1