diff --git a/source/java/org/alfresco/repo/content/transform/OOoContentTransformerHelper.java b/source/java/org/alfresco/repo/content/transform/OOoContentTransformerHelper.java
new file mode 100644
index 0000000000..875620046a
--- /dev/null
+++ b/source/java/org/alfresco/repo/content/transform/OOoContentTransformerHelper.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2005-2010 Alfresco Software Limited.
+ *
+ * This file is part of Alfresco
+ *
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.alfresco.repo.content.transform;
+
+import org.alfresco.repo.content.MimetypeMap;
+
+/**
+ * A class providing basic OOo-related functionality shared by both
+ * {@link ContentTransformer}s and {@link ContentTransformerWorker}s.
+ */
+public class OOoContentTransformerHelper extends ContentTransformerHelper
+{
+    /**
+     * There are some conversions that fail, despite the converter believing them possible.
+     * This method can be used by subclasses to check if a targetMimetype or source/target
+     * Mimetype pair are blocked.
+     * 
+     * @param sourceMimetype
+     * @param targetMimetype
+     * @return <code>true</code> if the mimetypes are blocked, else <code>false</code>
+     */
+    protected boolean isTransformationBlocked(String sourceMimetype, String targetMimetype)
+    {
+        if (targetMimetype.equals(MimetypeMap.MIMETYPE_XHTML))
+        {
+            return false;
+        }
+        else if (targetMimetype.equals(MimetypeMap.MIMETYPE_WORDPERFECT))
+        {
+            return false;
+        }
+        else if (targetMimetype.equals(MimetypeMap.MIMETYPE_FLASH))
+        {
+            return false;
+        }
+        // OpenOffice 3.2.x doesn't seem to support all Office 97 to Office 07 conversions
+        else if (sourceMimetype.equals(MimetypeMap.MIMETYPE_WORD) && targetMimetype.equals(MimetypeMap.MIMETYPE_OPENXML_WORDPROCESSING))
+        {
+            return false;
+        }
+        else if (sourceMimetype.equals(MimetypeMap.MIMETYPE_EXCEL) && targetMimetype.equals(MimetypeMap.MIMETYPE_OPENXML_SPREADSHEET))
+        {
+            return false;
+        }
+        else if (sourceMimetype.equals(MimetypeMap.MIMETYPE_HTML) && targetMimetype.equals(MimetypeMap.MIMETYPE_OPENXML_WORDPROCESSING))
+        {
+            return false;
+        }
+        else
+        {
+            return true;
+        }
+    }
+}
\ No newline at end of file
diff --git a/source/java/org/alfresco/repo/content/transform/OpenOfficeContentTransformerWorker.java b/source/java/org/alfresco/repo/content/transform/OpenOfficeContentTransformerWorker.java
index ed27034f09..c9ae31db64 100644
--- a/source/java/org/alfresco/repo/content/transform/OpenOfficeContentTransformerWorker.java
+++ b/source/java/org/alfresco/repo/content/transform/OpenOfficeContentTransformerWorker.java
@@ -32,7 +32,6 @@ import net.sf.jooreports.openoffice.converter.AbstractOpenOfficeDocumentConverte
 import net.sf.jooreports.openoffice.converter.OpenOfficeDocumentConverter;
 
 import org.alfresco.error.AlfrescoRuntimeException;
-import org.alfresco.repo.content.MimetypeMap;
 import org.alfresco.service.cmr.repository.ContentIOException;
 import org.alfresco.service.cmr.repository.ContentReader;
 import org.alfresco.service.cmr.repository.ContentWriter;
@@ -49,7 +48,7 @@ import org.springframework.core.io.DefaultResourceLoader;
  * 
  * @author Derek Hulley
  */
-public class OpenOfficeContentTransformerWorker extends ContentTransformerHelper implements ContentTransformerWorker, InitializingBean
+public class OpenOfficeContentTransformerWorker extends OOoContentTransformerHelper implements ContentTransformerWorker, InitializingBean
 {
     private OpenOfficeConnection connection;
     private AbstractOpenOfficeDocumentConverter converter;
@@ -137,33 +136,11 @@ public class OpenOfficeContentTransformerWorker extends ContentTransformerHelper
             return false;
         }
 
-        // there are some conversions that fail, despite the converter believing them possible
-        if (targetMimetype.equals(MimetypeMap.MIMETYPE_XHTML))
+        if (isTransformationBlocked(sourceMimetype, targetMimetype))
         {
             return false;
         }
-        else if (targetMimetype.equals(MimetypeMap.MIMETYPE_WORDPERFECT))
-        {
-            return false;
-        }
-        else if (targetMimetype.equals(MimetypeMap.MIMETYPE_FLASH))
-        {
-            return false;
-        }
-        // OpenOffice 3.2.x doesn't seem to support all Office 97 to Office 07 conversions
-        else if (sourceMimetype.equals(MimetypeMap.MIMETYPE_WORD) && targetMimetype.equals(MimetypeMap.MIMETYPE_OPENXML_WORDPROCESSING))
-        {
-            return false;
-        }
-        else if (sourceMimetype.equals(MimetypeMap.MIMETYPE_EXCEL) && targetMimetype.equals(MimetypeMap.MIMETYPE_OPENXML_SPREADSHEET))
-        {
-            return false;
-        }
-        else if (sourceMimetype.equals(MimetypeMap.MIMETYPE_HTML) && targetMimetype.equals(MimetypeMap.MIMETYPE_OPENXML_WORDPROCESSING))
-        {
-            return false;
-        }
-
+        
         MimetypeService mimetypeService = getMimetypeService();
         String sourceExtension = mimetypeService.getExtension(sourceMimetype);
         String targetExtension = mimetypeService.getExtension(targetMimetype);