diff --git a/examples/example6.php b/examples/example6.php
index 10400993..83f87622 100644
--- a/examples/example6.php
+++ b/examples/example6.php
@@ -14,6 +14,7 @@
 $vEvent->setDtStart(new \DateTime('2012-12-24'));
 $vEvent->setDtEnd(new \DateTime('2012-12-24'));
 $vEvent->setNoTime(true);
+$vEvent->setMsBusyStatus("FREE");
 $vEvent->setSummary('Christmas');
 
 // add some location information for apple devices
diff --git a/examples/example7.php b/examples/example7.php
index 1f8013e7..c5adbeb1 100644
--- a/examples/example7.php
+++ b/examples/example7.php
@@ -14,6 +14,7 @@
 $vEvent->setDtStart(new \DateTime('2012-12-24'));
 $vEvent->setDtEnd(new \DateTime('2012-12-24'));
 $vEvent->setNoTime(true);
+$vEvent->setMsBusyStatus("FREE");
 $vEvent->setSummary('Christmas');
 $vEvent->setDescription('Happy Christmas!');
 $vEvent->setDescriptionHTML('<b>Happy Christmas!</b>');
diff --git a/src/Component/Event.php b/src/Component/Event.php
index b753ac1e..d452b93b 100644
--- a/src/Component/Event.php
+++ b/src/Component/Event.php
@@ -36,6 +36,11 @@ class Event extends Component
     const STATUS_CONFIRMED = 'CONFIRMED';
     const STATUS_CANCELLED = 'CANCELLED';
 
+    const MS_BUSYSTATUS_FREE = 'FREE';
+    const MS_BUSYSTATUS_TENTATIVE = 'TENTATIVE';
+    const MS_BUSYSTATUS_BUSY = 'BUSY';
+    const MS_BUSYSTATUS_OOF = 'OOF';
+
     /**
      * @var string
      */
@@ -73,6 +78,11 @@ class Event extends Component
      */
     protected $noTime = false;
 
+    /**
+     * @var string
+     */
+    protected $msBusyStatus = null;
+
     /**
      * @var string
      */
@@ -356,6 +366,11 @@ public function buildPropertyBag()
             $propertyBag->set('X-MICROSOFT-CDO-ALLDAYEVENT', 'TRUE');
         }
 
+        if (null != $this->msBusyStatus) {
+            $propertyBag->set('X-MICROSOFT-CDO-BUSYSTATUS', $this->msBusyStatus);
+            $propertyBag->set('X-MICROSOFT-CDO-INTENDEDSTATUS', $this->msBusyStatus);
+        }
+
         if (null != $this->categories) {
             $propertyBag->set('CATEGORIES', $this->categories);
         }
@@ -482,6 +497,37 @@ public function setNoTime($noTime)
         return $this;
     }
 
+    /**
+     * @param $msBusyStatus
+     *
+     * @return $this
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function setMsBusyStatus($msBusyStatus)
+    {
+        $msBusyStatus = strtoupper($msBusyStatus);
+        if ($msBusyStatus == self::MS_BUSYSTATUS_FREE
+            || $msBusyStatus == self::MS_BUSYSTATUS_TENTATIVE
+            || $msBusyStatus == self::MS_BUSYSTATUS_BUSY
+            || $msBusyStatus == self::MS_BUSYSTATUS_OOF
+        ) {
+            $this->msBusyStatus = $msBusyStatus;
+        } else {
+            throw new \InvalidArgumentException('Invalid value for status');
+        }
+
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getMsBusyStatus()
+    {
+        return $this->msBusyStatus;
+    }
+
     /**
      * @param int $sequence
      *
diff --git a/tests/Eluceo/iCal/Component/EventTest.php b/tests/Eluceo/iCal/Component/EventTest.php
index 5b6c4170..a46e2ff7 100644
--- a/tests/Eluceo/iCal/Component/EventTest.php
+++ b/tests/Eluceo/iCal/Component/EventTest.php
@@ -105,6 +105,23 @@ public function testSetNoTime()
         $this->assertArrayHasKey('DTSTAMP', $result);
     }
 
+    public function testSetMsBusyTime()
+    {
+        $event = new Event('19960401T080045Z-4000F192713-0052@host1.com');
+        $event->setMsBusyStatus("FREE");
+        $result = $event->buildPropertyBag()->getIterator()->getArrayCopy();
+
+        $this->assertSame('X-MICROSOFT-CDO-BUSYSTATUS:FREE', $result['X-MICROSOFT-CDO-BUSYSTATUS']->toLine());
+    }
+
+    public function testGetMsBusyTime()
+    {
+        $event = new Event('19960401T080045Z-4000F192713-0052@host1.com');
+        $event->setMsBusyStatus("FREE");
+
+        $this->assertSame("FREE", $event->getMsBusyStatus());
+    }
+
     public function testSetSequence()
     {
         $event = new Event('19960401T080045Z-4000F192713-0052@host1.com');