diff --git a/lib/api/ktcmis/classes/CMISDocumentPropertyCollection.inc.php b/lib/api/ktcmis/classes/CMISDocumentPropertyCollection.inc.php
index a35bda3..0a19724 100644
--- a/lib/api/ktcmis/classes/CMISDocumentPropertyCollection.inc.php
+++ b/lib/api/ktcmis/classes/CMISDocumentPropertyCollection.inc.php
@@ -73,7 +73,8 @@ class CMISDocumentPropertyCollection extends CMISPropertyCollection {
                                      'ContentStreamUri' => 'propertyUri',
                                      'IsVersionSeriesCheckedOut' => 'propertyBoolean',
                                      'VersionSeriesCheckedOutBy' => 'propertyString',
-                                     'VersionSeriesCheckedOutId' => 'propertyId'));
+                                     'VersionSeriesCheckedOutId' => 'propertyId', 
+                                     'VersionLabel' => 'propertyString'));
     }
 
 }
diff --git a/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php b/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php
index 6536b6b..3ab27e4 100644
--- a/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php
+++ b/lib/api/ktcmis/classes/CMISPropertyCollection.inc.php
@@ -62,7 +62,7 @@ abstract class CMISPropertyCollection {
         self::$propertyTypes = array('ObjectId' => 'propertyId',
                                      'Author' => 'propertyString',
                                      'BaseType' => 'propertyString',
-                                     'ObjectTypeId' => 'propertyString',
+                                     'ObjectTypeId' => 'propertyId',
                                      'CreatedBy' => 'propertyString',
                                      'CreationDate' => 'propertyDateTime',
                                      'LastModifiedBy' => 'propertyString',
diff --git a/lib/api/ktcmis/ktcmis.inc.php b/lib/api/ktcmis/ktcmis.inc.php
index 8b55f8d..d59fb5b 100644
--- a/lib/api/ktcmis/ktcmis.inc.php
+++ b/lib/api/ktcmis/ktcmis.inc.php
@@ -861,6 +861,37 @@ class KTVersioningService extends KTCMISBase {
             'results' => (!empty($result) ? $result : 'Document Checkout Cancelled')
         );
     }
+    
+    /**
+     * Checks in a checked out document
+     * 
+     * @param string $repositoryId
+     * @param string $documentId
+     * @param boolean $major
+     * @param string $changeToken [optional]
+     * @param array $properties [optional]
+     * @param contentStream $contentStream [optional]
+     * @param string $checkinComment [optional]
+     * @return string $documentId
+     */
+    public function checkIn($repositoryId, $documentId, $major, $changeToken = '', $properties = array(), $contentStream = null, $checkinComment = '')
+    {
+        try {
+            $result = $this->VersioningService->checkIn($repositoryId, $documentId, $major, $changeToken, $properties, $contentStream, $checkinComment);
+        }
+        catch (Exception $e)
+        {
+            return array(
+                "status_code" => 1,
+                "message" => $e->getMessage()
+            );
+        }
+
+        return array(
+            'status_code' => 0,
+            'results' => (!empty($result) ? $result : 'Document Checked In Successfully')
+        );
+    }
 
 }
 
diff --git a/lib/api/ktcmis/services/CMISNavigationService.inc.php b/lib/api/ktcmis/services/CMISNavigationService.inc.php
index bed27ff..4e00335 100644
--- a/lib/api/ktcmis/services/CMISNavigationService.inc.php
+++ b/lib/api/ktcmis/services/CMISNavigationService.inc.php
@@ -268,6 +268,8 @@ class CMISNavigationService {
         foreach($results as $document)
         {
             $CMISDocument = new CMISDocumentObject($document->getId(), $this->ktapi);
+            // set version label property - possibly belongs in document class
+            $CMISDocument->setProperty('VersionLabel', $CMISDocument->getProperty('VersionSeriesCheckedOutId'));
             $checkedout[] = $CMISDocument->getProperties();
         }
 
diff --git a/lib/api/ktcmis/services/CMISVersioningService.inc.php b/lib/api/ktcmis/services/CMISVersioningService.inc.php
index 482515c..345086e 100644
--- a/lib/api/ktcmis/services/CMISVersioningService.inc.php
+++ b/lib/api/ktcmis/services/CMISVersioningService.inc.php
@@ -169,6 +169,46 @@ class CMISVersioningService {
         }
     }
     
+    /**
+     * Checks in a checked out document
+     * 
+     * @param string $repositoryId
+     * @param string $documentId
+     * @param boolean $major
+     * @param string $changeToken [optional]
+     * @param array $properties [optional]
+     * @param contentStream $contentStream [optional]
+     * @param string $checkinComment [optional]
+     * @return string $documentId
+     */
+    // TODO Exceptions:
+    //        •	ConstraintViolationException - SHALL throw if o	The Document’s Object-Type definition’s versionable attribute is FALSE. 
+    //        •	storageException - MAY throw
+    //        •	streamNotSupportedException -  The Repository SHALL throw this exception if the Object-Type definition specified by the typeId 
+    //                                         parameter’s “contentStreamAllowed” attribute is set to “not allowed” and a contentStream input 
+    //                                         parameter is provided.
+    //        •	updateConflictException - MAY throw
+    //        •	versioningException - The repository MAY throw this exception if the object is a non-current Document Version
+    public function checkIn($repositoryId, $documentId, $major, $changeToken = '', $properties = array(), $contentStream = null, $checkinComment = '')
+    {
+        $documentId = CMISUtil::decodeObjectId($documentId, $typeId);
+        
+        // throw updateConflictException if the operation is attempting to update an object that is no longer current (as determined by the repository).
+        try {
+            $pwc = new CMISDocumentObject($documentId, $this->ktapi);
+        }
+        catch (exception $e) {
+            throw new UpdateConflictException($e->getMessage());
+        }
+        
+        // throw exception if the object is not versionable
+        if (!$pwc->getAttribute('versionable')) {
+            throw new ConstraintViolationException('This document is not versionable and may not be checked in');
+        }
+        
+        return $documentId;
+    }
+    
 }
 
 ?>
diff --git a/webservice/atompub/cmis/KT_cmis_atom_server.services.inc.php b/webservice/atompub/cmis/KT_cmis_atom_server.services.inc.php
index 54cfcbe..ef12863 100644
--- a/webservice/atompub/cmis/KT_cmis_atom_server.services.inc.php
+++ b/webservice/atompub/cmis/KT_cmis_atom_server.services.inc.php
@@ -446,7 +446,7 @@ class KT_cmis_atom_service_checkedout extends KT_cmis_atom_service {
         $repositoryId = $repositories[0]['repositoryId'];
 
         $checkedout = $NavigationService->getCheckedOutDocs($repositoryId);
-
+//print_r($checkedout);exit;
         //Create a new response feed
         $feed = new KT_cmis_atom_responseFeed_GET(CMIS_APP_BASE_URI);
         $workspace = $feed->getWorkspace();
@@ -483,7 +483,7 @@ class KT_cmis_atom_service_checkedout extends KT_cmis_atom_service {
 
         foreach($checkedout as $cmisEntry)
         {
-            KT_cmis_atom_service_helper::createObjectEntry($feed, $cmisEntry, $folderName);
+            KT_cmis_atom_service_helper::createObjectEntry($feed, $cmisEntry, $folderName, true);
 			
 //			// after each entry, add app:edited tag
 //           	$feed->newField('app:edited', KT_cmis_atom_service_helper::formatDatestamp(), $feed);
@@ -506,7 +506,7 @@ class KT_cmis_atom_service_checkedout extends KT_cmis_atom_service {
 
         $repositories = $RepositoryService->getRepositories();
         $repositoryId = $repositories[0]['repositoryId'];
-        
+
         $cmisObjectProperties = KT_cmis_atom_service_helper::getCmisProperties($this->parsedXMLContent['@children']);
         
         // check for existing object id as property of submitted object data
@@ -646,6 +646,8 @@ class KT_cmis_atom_service_document extends KT_cmis_atom_service {
 }
 
 class KT_cmis_atom_service_pwc extends KT_cmis_atom_service {
+    
+    protected $serviceType = 'PWC';
 
     /**
      * Deals with GET actions for Private Working Copies.
@@ -703,6 +705,29 @@ class KT_cmis_atom_service_pwc extends KT_cmis_atom_service {
         $this->responseFeed = null;
     }
     
+    public function PUT_action()
+    {
+        // call the checkin function
+        $RepositoryService = new RepositoryService();
+        $VersioningService = new VersioningService(KT_cmis_atom_service_helper::getKt());
+
+        $repositories = $RepositoryService->getRepositories();
+        $repositoryId = $repositories[0]['repositoryId'];
+        
+        $response = $VersioningService->checkIn($repositoryId, $this->params[0]);
+
+        if (PEAR::isError($response))
+        {
+            $feed = KT_cmis_atom_service_helper::getErrorFeed($this, self::STATUS_SERVER_ERROR, $response->getMessage());
+           //Expose the responseFeed
+            $this->responseFeed = $feed;
+            return null;
+        }
+        
+        $this->setStatus(self::STATUS_NO_CONTENT);
+        $this->responseFeed = null;
+    }
+    
 }
 
 ?>
\ No newline at end of file
diff --git a/webservice/atompub/cmis/KT_cmis_atom_service_helper.inc.php b/webservice/atompub/cmis/KT_cmis_atom_service_helper.inc.php
index d57198f..f3007a9 100644
--- a/webservice/atompub/cmis/KT_cmis_atom_service_helper.inc.php
+++ b/webservice/atompub/cmis/KT_cmis_atom_service_helper.inc.php
@@ -14,6 +14,7 @@ class KT_cmis_atom_service_helper {
      */
     static public function getObjectFeed(&$service, $ObjectService, $repositoryId, $objectId, $method = 'GET')
     {
+        $serviceType = $service->getServiceType();
         $response = $ObjectService->getProperties($repositoryId, $objectId, false, false);
 
         if (PEAR::isError($response)) {
@@ -22,18 +23,24 @@ class KT_cmis_atom_service_helper {
         
         $cmisEntry = $response;
         $response = null;
-
-        if ($method == 'GET') {
+        
+        // POST/PWC responses only send back an entry, not a feed
+        if (($serviceType == 'PWC') || ($method == 'POST')) {
+            if ($method == 'POST') {
+                $response = new KT_cmis_atom_response_POST(CMIS_APP_BASE_URI);
+            }
+            else {
+                $response = new KT_cmis_atom_response_GET(CMIS_APP_BASE_URI);
+            }
+        }
+        else if ($method == 'GET') {
             $response = new KT_cmis_atom_responseFeed_GET(CMIS_APP_BASE_URI);
             $response->newField('title', $cmisEntry['properties']['ObjectTypeId']['value'], $response);
             $response->newField('id', 'urn:uuid:' . $cmisEntry['properties']['ObjectId']['value'], $response);
         }
-        // POST responses only send back an entry, not a feed
-        else if ($method == 'POST') {
-            $response = new KT_cmis_atom_response_POST(CMIS_APP_BASE_URI);
-        }
 
-        KT_cmis_atom_service_helper::createObjectEntry($response, $cmisEntry, $cmisEntry['properties']['ParentId']['value'], $method);
+        if ($serviceType == 'PWC') $pwc = true; else $pwc = false;
+        KT_cmis_atom_service_helper::createObjectEntry($response, $cmisEntry, $cmisEntry['properties']['ParentId']['value'], $pwc, $method);
 
         // Don't think this should be here...only one item so why would we need to say there are no more?
         /*if ($method == 'GET') {
@@ -50,7 +57,7 @@ class KT_cmis_atom_service_helper {
      * @param array $cmisEntry The entry data
      * @param string $parent The parent folder
      */
-    static public function createObjectEntry(&$response, $cmisEntry, $parent, $method = 'GET')
+    static public function createObjectEntry(&$response, $cmisEntry, $parent, $pwc = false, $method = 'GET')
     {
         $workspace = $response->getWorkspace();
         $type = strtolower($cmisEntry['properties']['ObjectTypeId']['value']);
@@ -58,7 +65,8 @@ class KT_cmis_atom_service_helper {
     	// create entry
         $entry = $response->newEntry();
 
-        if ($method == 'POST')
+        // FIXME this maybe belongs in the response feed class only how?
+        if (($method == 'POST') || $pwc)
         {
             // append attributes
             $entry->appendChild($response->newAttr('xmlns', 'http://www.w3.org/2005/Atom'));
@@ -89,7 +97,7 @@ class KT_cmis_atom_service_helper {
         // links
         $link = $response->newElement('link');
         $link->appendChild($response->newAttr('rel', 'self'));
-        $link->appendChild($response->newAttr('href', CMIS_APP_BASE_URI . $workspace . '/' . $type . '/' . $cmisEntry['properties']['ObjectId']['value']));
+        $link->appendChild($response->newAttr('href', CMIS_APP_BASE_URI . $workspace . '/' . (!$pwc ? $type : 'pwc') . '/' . $cmisEntry['properties']['ObjectId']['value']));
         $entry->appendChild($link);
 
         $link = $response->newElement('link');
diff --git a/webservice/classes/atompub/cmis/KT_cmis_atom_service.inc.php b/webservice/classes/atompub/cmis/KT_cmis_atom_service.inc.php
index 3266cd1..0b6a44d 100644
--- a/webservice/classes/atompub/cmis/KT_cmis_atom_service.inc.php
+++ b/webservice/classes/atompub/cmis/KT_cmis_atom_service.inc.php
@@ -6,8 +6,9 @@ class KT_cmis_atom_service extends KT_atom_service {
 
 	// override and extend as needed
     
+    protected $serviceType = null;
     protected $contentDownload = false;
-    
+        
     public public function isContentDownload()
     {
         return $this->contentDownload;
@@ -23,6 +24,11 @@ class KT_cmis_atom_service extends KT_atom_service {
         return $this->output;
     }
     
+    public function getServiceType()
+    {
+        return $this->serviceType;
+    }
+    
     protected function setHeader($header = null, $value = null)
     {
 		if ($header) header($header . ': ' . $value);
diff --git a/webservice/classes/atompub/cmis/VersioningService.inc.php b/webservice/classes/atompub/cmis/VersioningService.inc.php
index f7fb909..82cbf4d 100644
--- a/webservice/classes/atompub/cmis/VersioningService.inc.php
+++ b/webservice/classes/atompub/cmis/VersioningService.inc.php
@@ -72,6 +72,30 @@ class VersioningService extends KTVersioningService {
             return new PEAR_Error($result['message']);
         }
     }
+    
+    /**
+     * Checks in a checked out document
+     * 
+     * @param string $repositoryId
+     * @param string $documentId
+     * @param boolean $major
+     * @param string $changeToken [optional]
+     * @param array $properties [optional]
+     * @param contentStream $contentStream [optional]
+     * @param string $checkinComment [optional]
+     * @return string $documentId
+     */
+    public function checkIn($repositoryId, $documentId, $major, $changeToken = '', $properties = array(), $contentStream = null, $checkinComment = '')
+    {
+        $result = parent::checkIn($repositoryId, $documentId, $major, $changeToken, $properties, $contentStream, $checkinComment);
+
+        if ($result['status_code'] == 0) {
+            return $result['results'];
+        }
+        else {
+            return new PEAR_Error($result['message']);
+        }
+    }
 
 }