--- a/src/pyams_content/workflow/basic.py	Tue Oct 01 08:31:43 2019 +0200
+++ b/src/pyams_content/workflow/basic.py	Tue Oct 01 12:04:20 2019 +0200
@@ -10,8 +10,6 @@
 # FOR A PARTICULAR PURPOSE.
 #
 
-__docformat__ = 'restructuredtext'
-
 from datetime import datetime, timedelta
 
 from zope.copy import copy
@@ -20,11 +18,10 @@
 from zope.location import locate
 from zope.schema.vocabulary import SimpleTerm, SimpleVocabulary
 
-from pyams_content import _
 from pyams_content.interfaces import CREATE_VERSION_PERMISSION, MANAGER_ROLE, \
-    MANAGE_CONTENT_PERMISSION, MANAGE_SITE_ROOT_PERMISSION, OWNER_ROLE, PILOT_ROLE, PUBLISH_CONTENT_PERMISSION, \
-    READER_ROLE, WEBMASTER_ROLE
-from pyams_content.shared.common.interfaces import IManagerRestrictions
+    MANAGE_CONTENT_PERMISSION, MANAGE_SITE_ROOT_PERMISSION, OWNER_ROLE, PILOT_ROLE, \
+    PUBLISH_CONTENT_PERMISSION, READER_ROLE, WEBMASTER_ROLE
+from pyams_content.shared.common.interfaces import IContributorRestrictions, IManagerRestrictions
 from pyams_content.shared.common.interfaces import IWfSharedContentRoles
 from pyams_content.workflow import ContentArchivingTask, ContentPublishingTask
 from pyams_content.workflow.interfaces import IBasicWorkflow
@@ -36,11 +33,16 @@
 from pyams_utils.registry import get_current_registry, get_utility, query_utility, utility_config
 from pyams_utils.request import check_request
 from pyams_utils.timezone import gmtime
-from pyams_workflow.interfaces import IWorkflow, IWorkflowInfo, IWorkflowPublicationInfo, IWorkflowState, \
-    IWorkflowStateLabel, IWorkflowVersions, ObjectClonedEvent, SYSTEM
+from pyams_workflow.interfaces import IWorkflow, IWorkflowInfo, IWorkflowPublicationInfo, \
+    IWorkflowState, IWorkflowStateLabel, IWorkflowVersions, ObjectClonedEvent, SYSTEM
 from pyams_workflow.workflow import Transition, Workflow
 
 
+__docformat__ = 'restructuredtext'
+
+from pyams_content import _
+
+
 DRAFT = 'draft'
 PRE_PUBLISHED = 'pre-published'
 PUBLISHED = 'published'
@@ -127,6 +129,11 @@
     principal_id = request.principal.id
     if principal_id in context.owner | {context.creator} | context.contributors:
         return True
+    # grant access to allowed contributors
+    restrictions = IContributorRestrictions(context).get_restrictions(principal_id)
+    if restrictions and restrictions.check_access(context, permission=MANAGE_CONTENT_PERMISSION,
+                                                  request=request):
+        return True
     # grant access to local content managers
     if principal_id in context.managers:
         return True
@@ -145,6 +152,11 @@
     principal_id = request.principal.id
     if principal_id in context.owner | {context.creator} | context.contributors:
         return True
+    # grant access to allowed contributors
+    restrictions = IContributorRestrictions(context).get_restrictions(principal_id)
+    if restrictions and restrictions.check_access(context, permission=MANAGE_CONTENT_PERMISSION,
+                                                  request=request):
+        return True
     # grant access to local content managers
     if principal_id in context.managers:
         return True