diff --git a/src/Lunr/Vortex/APNS/APNSLiveActivityPayload.php b/src/Lunr/Vortex/APNS/APNSLiveActivityPayload.php
new file mode 100644
index 0000000..77549f3
--- /dev/null
+++ b/src/Lunr/Vortex/APNS/APNSLiveActivityPayload.php
@@ -0,0 +1,141 @@
+<?php
+
+/**
+ * This file contains functionality to generate Apple Push Notification Service payloads for live activities.
+ *
+ * SPDX-FileCopyrightText: Copyright 2024 Move Agency Group B.V., Zwolle, The Netherlands
+ * SPDX-License-Identifier: MIT
+ */
+
+namespace Lunr\Vortex\APNS;
+
+use ApnsPHP\Message\LiveActivityEvent;
+
+/**
+ * Apple Push Notification Service live activity payload generator.
+ *
+ * @phpstan-import-type APNSBasePayloadElements from APNSPayload
+ * @phpstan-type APNSLiveActivityPayloadElements APNSBasePayloadElements|array{
+ *     event?: LiveActivityEvent,
+ *     contentState?: array|object,
+ *     attributesType?: string,
+ *     attributes?: array|object,
+ *     staleTime?: int,
+ *     dismissTime?: int,
+ * }
+ */
+class APNSLiveActivityPayload extends APNSPayload
+{
+
+    /**
+     * Constructor.
+     */
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    /**
+     * Destructor.
+     */
+    public function __destruct()
+    {
+        parent::__destruct();
+    }
+
+    /**
+     * Construct the payload for the push notification.
+     *
+     * @return APNSLiveActivityPayloadElements APNSPayload elements
+     */
+    public function get_payload(): array
+    {
+        return parent::get_payload();
+    }
+
+    /**
+     * Sets the payload key event.
+     *
+     * @param LiveActivityEvent $event The event type for the live activity
+     *
+     * @return self Self Reference
+     */
+    public function set_event(LiveActivityEvent $event): self
+    {
+        $this->elements['event'] = $event;
+
+        return $this;
+    }
+
+    /**
+     * Sets the payload key contentState.
+     *
+     * @param array|object $state The current content state for the live activity
+     *
+     * @return self Self Reference
+     */
+    public function set_content_state(array|object $state): self
+    {
+        $this->elements['contentState'] = $state;
+
+        return $this;
+    }
+
+    /**
+     * Sets the payload key attributes.
+     *
+     * @param array|object $attributes The starting attributes for the live activity
+     *
+     * @return self Self Reference
+     */
+    public function set_attributes(array|object $attributes): self
+    {
+        $this->elements['attributes'] = $attributes;
+
+        return $this;
+    }
+
+    /**
+     * Sets the payload key attributesType.
+     *
+     * @param string $type The starting attributes type for the live activity
+     *
+     * @return self Self Reference
+     */
+    public function set_attributes_type(string $type): self
+    {
+        $this->elements['attributesType'] = $type;
+
+        return $this;
+    }
+
+    /**
+     * Sets the payload key staleTime.
+     *
+     * @param int $time The timestamp when the activity should become stale
+     *
+     * @return self Self Reference
+     */
+    public function set_stale_timestamp(int $time): self
+    {
+        $this->elements['staleTime'] = $time;
+
+        return $this;
+    }
+
+    /**
+     * Sets the payload key dismissTime.
+     *
+     * @param int $time The timestamp when the activity should dismiss
+     *
+     * @return self Self Reference
+     */
+    public function set_dismiss_timestamp(int $time): self
+    {
+        $this->elements['dismissTime'] = $time;
+
+        return $this;
+    }
+}
+
+?>
diff --git a/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadGetTest.php b/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadGetTest.php
new file mode 100644
index 0000000..9eb0665
--- /dev/null
+++ b/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadGetTest.php
@@ -0,0 +1,41 @@
+<?php
+
+/**
+ * This file contains the APNSLiveActivityPayloadGetTest class.
+ *
+ * SPDX-FileCopyrightText: Copyright 2024 Move Agency Group B.V., Zwolle, The Netherlands
+ * SPDX-License-Identifier: MIT
+ */
+
+namespace Lunr\Vortex\APNS\Tests;
+
+/**
+ * This class contains tests for the getters of the APNSLiveActivityPayload class.
+ *
+ * @covers \Lunr\Vortex\APNS\APNSLiveActivityPayload
+ */
+class APNSLiveActivityPayloadGetTest extends APNSLiveActivityPayloadTest
+{
+
+    /**
+     * Test get_payload() with alert being present.
+     *
+     * @param string $file       The path to the payload file
+     * @param array  $data_array The data to compare get_payload against
+     *
+     * @dataProvider payloadProvider
+     * @covers       \Lunr\Vortex\APNS\APNSLiveActivityPayload::get_payload
+     */
+    public function testGetPayloadWithAlert(string $file, array $data_array): void
+    {
+        $file     = TEST_STATICS . $file;
+        $elements = $data_array;
+
+        $this->set_reflection_property_value('elements', $elements);
+
+        $this->assertJsonStringEqualsJsonFile($file, json_encode($this->class->get_payload()));
+    }
+
+}
+
+?>
diff --git a/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadSetTest.php b/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadSetTest.php
new file mode 100644
index 0000000..f134dd7
--- /dev/null
+++ b/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadSetTest.php
@@ -0,0 +1,175 @@
+<?php
+
+/**
+ * This file contains the APNSLiveActivityPayloadSetTest class.
+ *
+ * SPDX-FileCopyrightText: Copyright 2024 Move Agency Group B.V., Zwolle, The Netherlands
+ * SPDX-License-Identifier: MIT
+ */
+
+namespace Lunr\Vortex\APNS\Tests;
+
+use ApnsPHP\Message\LiveActivityEvent;
+use ApnsPHP\Message\Priority;
+
+/**
+ * This class contains tests for the setters of the APNSLiveActivityPayload class.
+ *
+ * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload
+ */
+class APNSLiveActivityPayloadSetTest extends APNSLiveActivityPayloadTest
+{
+
+    /**
+     * Test set_event() works correctly.
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_event
+     */
+    public function testSetEvent(): void
+    {
+        $this->class->set_event(LiveActivityEvent::Start);
+
+        $value = $this->get_reflection_property_value('elements');
+
+        $this->assertArrayHasKey('event', $value);
+        $this->assertEquals(LiveActivityEvent::Start, $value['event']);
+    }
+
+    /**
+     * Test fluid interface of set_event().
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_event
+     */
+    public function testSetEventReturnsSelfReference(): void
+    {
+        $this->assertSame($this->class, $this->class->set_event(LiveActivityEvent::Start));
+    }
+
+    /**
+     * Test set_content_state() works correctly.
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_content_state
+     */
+    public function testSetContentState(): void
+    {
+        $this->class->set_content_state([]);
+
+        $value = $this->get_reflection_property_value('elements');
+
+        $this->assertArrayHasKey('contentState', $value);
+        $this->assertEquals([], $value['contentState']);
+    }
+
+    /**
+     * Test fluid interface of set_content_state().
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_content_state
+     */
+    public function testSetContentStateReturnsSelfReference(): void
+    {
+        $this->assertSame($this->class, $this->class->set_content_state([]));
+    }
+
+    /**
+     * Test set_attributes() works correctly.
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_attributes
+     */
+    public function testSetAttributes(): void
+    {
+        $this->class->set_attributes([]);
+
+        $value = $this->get_reflection_property_value('elements');
+
+        $this->assertArrayHasKey('attributes', $value);
+        $this->assertEquals([], $value['attributes']);
+    }
+
+    /**
+     * Test fluid interface of set_attributes().
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_attributes
+     */
+    public function testSetAttributesReturnsSelfReference(): void
+    {
+        $this->assertSame($this->class, $this->class->set_attributes([]));
+    }
+
+    /**
+     * Test set_attributes_type() works correctly.
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_attributes_type
+     */
+    public function testSetAttributesType(): void
+    {
+        $this->class->set_attributes_type('type');
+
+        $value = $this->get_reflection_property_value('elements');
+
+        $this->assertArrayHasKey('attributesType', $value);
+        $this->assertEquals('type', $value['attributesType']);
+    }
+
+    /**
+     * Test fluid interface of set_attributes_type().
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_attributes_type
+     */
+    public function testSetAttributesTypeReturnsSelfReference(): void
+    {
+        $this->assertSame($this->class, $this->class->set_attributes_type('type'));
+    }
+
+    /**
+     * Test set_stale_timestamp() works correctly.
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_stale_timestamp
+     */
+    public function testSetStaleTime(): void
+    {
+        $this->class->set_stale_timestamp(1);
+
+        $value = $this->get_reflection_property_value('elements');
+
+        $this->assertArrayHasKey('staleTime', $value);
+        $this->assertEquals(1, $value['staleTime']);
+    }
+
+    /**
+     * Test fluid interface of set_stale_timestamp().
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_stale_timestamp
+     */
+    public function testSetStaleTimeReturnsSelfReference(): void
+    {
+        $this->assertSame($this->class, $this->class->set_stale_timestamp(1));
+    }
+
+    /**
+     * Test set_dismiss_timestamp() works correctly.
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_dismiss_timestamp
+     */
+    public function testSetDismissTime(): void
+    {
+        $this->class->set_dismiss_timestamp(1);
+
+        $value = $this->get_reflection_property_value('elements');
+
+        $this->assertArrayHasKey('dismissTime', $value);
+        $this->assertEquals(1, $value['dismissTime']);
+    }
+
+    /**
+     * Test fluid interface of set_dismiss_timestamp().
+     *
+     * @covers Lunr\Vortex\APNS\APNSLiveActivityPayload::set_dismiss_timestamp
+     */
+    public function testSetDismissTimeReturnsSelfReference(): void
+    {
+        $this->assertSame($this->class, $this->class->set_dismiss_timestamp(1));
+    }
+
+}
+
+?>
diff --git a/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadTest.php b/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadTest.php
new file mode 100644
index 0000000..94026be
--- /dev/null
+++ b/src/Lunr/Vortex/APNS/Tests/APNSLiveActivityPayloadTest.php
@@ -0,0 +1,95 @@
+<?php
+
+/**
+ * This file contains the APNSLiveActivityPayloadTest class.
+ *
+ * SPDX-FileCopyrightText: Copyright 2024 Move Agency Group B.V., Zwolle, The Netherlands
+ * SPDX-License-Identifier: MIT
+ */
+
+namespace Lunr\Vortex\APNS\Tests;
+
+use Lunr\Halo\LunrBaseTest;
+use Lunr\Vortex\APNS\APNSLiveActivityPayload;
+
+/**
+ * This class contains common setup routines, providers
+ * and shared attributes for testing the APNSLiveActivityPayload class.
+ *
+ * @covers \Lunr\Vortex\APNS\APNSLiveActivityPayload
+ */
+abstract class APNSLiveActivityPayloadTest extends LunrBaseTest
+{
+
+    /**
+     * Sample payload json
+     * @var string
+     */
+    protected string $payload;
+
+    /**
+     * Instance of the tested class.
+     * @var APNSLiveActivityPayload
+     */
+    protected APNSLiveActivityPayload $class;
+
+    /**
+     * Testcase Constructor.
+     */
+    public function setUp(): void
+    {
+        $elements_array = [
+            'alert'       => 'apnsmessage',
+            'badge'       => 10,
+            'sound'       => 'bingbong.wav',
+            'custom_data' => [
+                'key1' => 'value1',
+                'key2' => 'value2',
+            ],
+        ];
+
+        $this->payload = json_encode($elements_array);
+
+        $this->class = new APNSLiveActivityPayload();
+
+        parent::baseSetUp($this->class);
+    }
+
+    /**
+     * TestCase Destructor.
+     */
+    public function tearDown(): void
+    {
+        unset($this->payload);
+        unset($this->class);
+
+        parent::tearDown();
+    }
+
+    /**
+     * Unit test data provider for payload files.
+     *
+     * @return array<string, mixed> $values Array of non-object values
+     */
+    public function payloadProvider(): array
+    {
+        $values   = [];
+        $values['alert']       = [ '/Vortex/apns/alert.json', [ 'alert' => 'apnsmessage' ] ];
+        $values['custom data'] = [ '/Vortex/apns/custom_data.json', [ 'custom_data' => [ 'key1' => 'value1', 'key2' => 'value2' ] ] ];
+        $values['badge']       = [ '/Vortex/apns/badge.json', [ 'badge' => 10 ] ];
+        $values['full']        = [
+            '/Vortex/apns/apns.json',
+            [
+                'alert'       => 'apnsmessage',
+                'badge'       => 10,
+                'sound'       => 'bingbong.wav',
+                'custom_data' => [ 'key1' => 'value1', 'key2' => 'value2' ],
+            ],
+        ];
+
+        return $values;
+    }
+
+}
+
+?>