diff --git a/addons/hr_timesheet_sheet/hr_timesheet_sheet.py b/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
index 8b622dc9b34..ec2af26dffb 100644
--- a/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
+++ b/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
@@ -162,12 +162,7 @@ class hr_timesheet_sheet(osv.osv):
         'user_id': fields.related('employee_id', 'user_id', type="many2one", relation="res.users", store=True, string="User", required=False, readonly=True),#fields.many2one('res.users', 'User', required=True, select=1, states={'confirm':[('readonly', True)], 'done':[('readonly', True)]}),
         'date_from': fields.date('Date from', required=True, select=1, readonly=True, states={'new':[('readonly', False)]}),
         'date_to': fields.date('Date to', required=True, select=1, readonly=True, states={'new':[('readonly', False)]}),
-        'timesheet_ids' : fields.one2many('hr.analytic.timesheet', 'sheet_id',
-            'Timesheet lines',
-            readonly=True, states={
-                'draft': [('readonly', False)],
-                'new': [('readonly', False)]}
-            ),
+        'timesheet_ids' : fields.one2many('hr.analytic.timesheet', 'sheet_id', 'Timesheet lines'),
         'attendances_ids' : fields.one2many('hr.attendance', 'sheet_id', 'Attendances'),
         'state' : fields.selection([
             ('new', 'New'),
@@ -332,8 +327,7 @@ class hr_timesheet_line(osv.osv):
         for ts_line in self.browse(cursor, user, ids, context=context):
             sheet_ids = sheet_obj.search(cursor, user,
                 [('date_to', '>=', ts_line.date), ('date_from', '<=', ts_line.date),
-                 ('employee_id.user_id', '=', ts_line.user_id.id),
-                 ('state', 'in', ['draft', 'new'])],
+                 ('employee_id.user_id', '=', ts_line.user_id.id)],
                 context=context)
             if sheet_ids:
             # [0] because only one sheet possible for an employee between 2 dates
@@ -386,7 +380,7 @@ class hr_timesheet_line(osv.osv):
 
     def _check(self, cr, uid, ids):
         for att in self.browse(cr, uid, ids):
-            if att.sheet_id and att.sheet_id.state not in ('draft', 'new'):
+            if att.sheet_id and att.sheet_id.state not in ('draft', 'new') and not self.pool['res.users'].has_group(cr, uid, 'base.group_hr_manager'):
                 raise osv.except_osv(_('Error!'), _('You cannot modify an entry in a confirmed timesheet.'))
         return True
 
@@ -531,7 +525,7 @@ class hr_attendance(osv.osv):
 
     def _check(self, cr, uid, ids):
         for att in self.browse(cr, uid, ids):
-            if att.sheet_id and att.sheet_id.state not in ('draft', 'new'):
+            if att.sheet_id and att.sheet_id.state not in ('draft', 'new') and not self.pool['res.users'].has_group(cr, uid, 'base.group_hr_manager'):
                 raise osv.except_osv(_('Error!'), _('You cannot modify an entry in a confirmed timesheet'))
         return True