diff --git a/config/alfresco/application-context.xml b/config/alfresco/application-context.xml
index ebae104f5f..fd196884f2 100644
--- a/config/alfresco/application-context.xml
+++ b/config/alfresco/application-context.xml
@@ -40,7 +40,6 @@
     <import resource="classpath:alfresco/audit-services-context.xml" />
     <import resource="classpath:alfresco/attributes-service-context.xml"/>
     <import resource="classpath:alfresco/deployment-service-context.xml"/>
-    <import resource="classpath:alfresco/invitation-service-context.xml"/>
     <import resource="classpath:alfresco/linkvalidation-service-context.xml"/>
     <import resource="classpath:alfresco/remote-services-context.xml"/>
     <import resource="classpath*:alfresco/office-addin-context.xml"/>
@@ -51,6 +50,7 @@
     <import resource="classpath:alfresco/site-services-context.xml"/>
     <import resource="classpath:alfresco/tagging-services-context.xml"/>
     <import resource="classpath:alfresco/form-services-context.xml"/>
+    <import resource="classpath:alfresco/invitation-service-context.xml"/>
     <import resource="classpath:alfresco/cmis-api-context.xml" />
     <import resource="classpath*:alfresco/patch/*-context.xml" />
     <import resource="classpath*:alfresco/domain/*-context.xml" />
diff --git a/config/alfresco/invitation-service-context.xml b/config/alfresco/invitation-service-context.xml
index 602c5b5ada..b3b898859d 100644
--- a/config/alfresco/invitation-service-context.xml
+++ b/config/alfresco/invitation-service-context.xml
@@ -3,7 +3,7 @@
 <beans>
      
      <!--  Invitation Service Configuration File --> 
-     <bean id="invitationService" class="org.alfresco.repo.invitation.InvitationServiceImpl">
+     <bean id="invitationService" class="org.alfresco.repo.invitation.InvitationServiceImpl" init-method="init">
         <property name="workflowService" ref="WorkflowService"/>
         <property name="personService" ref="PersonService"/>
         <property name="permissionService" ref="PermissionService"/>
@@ -14,6 +14,9 @@
         <property name="nodeService" ref="NodeService"/>
         <property name="userNameGenerator" ref="userNameGenerator"/>
         <property name="passwordGenerator" ref="passwordGenerator"/> 
+        <property name="policyComponent">
+            <ref bean="policyComponent" />
+        </property>
      </bean>
      
     <!-- Site service security bean -->
diff --git a/source/java/org/alfresco/repo/invitation/InvitationServiceImpl.java b/source/java/org/alfresco/repo/invitation/InvitationServiceImpl.java
index 99be4a0b58..58de47080d 100644
--- a/source/java/org/alfresco/repo/invitation/InvitationServiceImpl.java
+++ b/source/java/org/alfresco/repo/invitation/InvitationServiceImpl.java
@@ -62,6 +62,9 @@ import org.alfresco.util.GUID;
 import org.alfresco.util.PropertyCheck;
 import org.alfresco.model.ContentModel;
 import org.alfresco.repo.invitation.site.*;
+import org.alfresco.repo.node.NodeServicePolicies;
+import org.alfresco.repo.policy.JavaBehaviour;
+import org.alfresco.repo.policy.PolicyComponent;
 import org.alfresco.repo.security.authentication.AuthenticationUtil;
 import org.alfresco.repo.security.authentication.MutableAuthenticationDao;
 import org.alfresco.repo.security.authentication.PasswordGenerator;
@@ -80,7 +83,7 @@ import org.apache.commons.logging.LogFactory;
  * @author mrogers
  * 
  */
-public class InvitationServiceImpl implements InvitationService 
+public class InvitationServiceImpl implements InvitationService, NodeServicePolicies.BeforeDeleteNodePolicy
 {
 	private static final Log logger = LogFactory
 			.getLog(InvitationServiceImpl.class);
@@ -99,6 +102,7 @@ public class InvitationServiceImpl implements InvitationService
 	// user name and password generation beans
 	private UserNameGenerator usernameGenerator;
 	private PasswordGenerator passwordGenerator;
+    private PolicyComponent policyComponent;
 
 	// maximum number of tries to generate a invitee user name which
 	// does not already belong to an existing person
@@ -106,6 +110,16 @@ public class InvitationServiceImpl implements InvitationService
 	
 	private int maxUserNameGenRetries = MAX_NUM_INVITEE_USER_NAME_GEN_TRIES;
 	
+    /**
+     * Set the policy component
+     * 
+     * @param policyComponent   policy component
+     */
+    public void setPolicyComponent(PolicyComponent policyComponent)
+    {
+        this.policyComponent = policyComponent;
+    }
+	
 	
     /**
      * Checks that all necessary properties and services have been provided.
@@ -123,6 +137,13 @@ public class InvitationServiceImpl implements InvitationService
         PropertyCheck.mandatory(this, "NodeService", nodeService);
         PropertyCheck.mandatory(this, "UserNameGenerator", usernameGenerator);
         PropertyCheck.mandatory(this, "PasswordGenerator", passwordGenerator);
+        PropertyCheck.mandatory(this, "PolicyComponent", policyComponent);
+        
+        //
+        this.policyComponent.bindClassBehaviour(
+                QName.createQName(NamespaceService.ALFRESCO_URI, "beforeDeleteNode"),
+                SiteModel.TYPE_SITE,
+                new JavaBehaviour(this, "beforeDeleteNode"));
     }
 	
 	/**
@@ -1421,4 +1442,41 @@ public class InvitationServiceImpl implements InvitationService
 	private int getMaxUserNameGenRetries() {
 		return maxUserNameGenRetries;
 	}
+
+	/**
+	 * NodeServicePolicies.BeforeDeleteNodePolicy
+	 * 
+	 * Called immediatly prior to deletion of a web site.
+	 */
+	public void beforeDeleteNode(NodeRef nodeRef) 
+	{
+		logger.debug("beforeDeleteNode");
+        
+		final NodeRef siteRef = nodeRef;
+		
+		// Run as system user
+        AuthenticationUtil.runAs(new AuthenticationUtil.RunAsWork<Object>()
+        {
+            public Object doWork() throws Exception
+            {
+            	QName type = nodeService.getType(siteRef);
+            	if(type.equals(SiteModel.TYPE_SITE))
+            	{
+            		// this is a web site being deleted.
+            		String siteName = (String)nodeService.getProperty(siteRef, ContentModel.PROP_NAME);
+            		if(siteName != null)
+            		{
+            			logger.debug("Invitation service delete node fired " + type + ", " +siteName);
+            			List<Invitation> invitations = listPendingInvitationsForResource(Invitation.ResourceType.WEB_SITE, siteName);
+            			for(Invitation invitation : invitations)
+            			{
+            				logger.debug("cancel workflow " + invitation.getInviteId());
+            				workflowService.cancelWorkflow(invitation.getInviteId());
+            			}
+            		}
+            	}
+            	return null;
+            }
+        }, AuthenticationUtil.SYSTEM_USER_NAME);
+	}
 }