diff --git a/addons/hr_timesheet_invoice/hr_timesheet_invoice.py b/addons/hr_timesheet_invoice/hr_timesheet_invoice.py
index a1562d53a61..9baaf5b1b7f 100644
--- a/addons/hr_timesheet_invoice/hr_timesheet_invoice.py
+++ b/addons/hr_timesheet_invoice/hr_timesheet_invoice.py
@@ -135,6 +135,8 @@ class account_analytic_line(osv.osv):
     def _default_general_account(self, cr, uid, context=None):
         proxy = self.pool.get('hr.employee')
         record_ids = proxy.search(cr, uid, [('user_id', '=', uid)], context=context)
+        if not len(record_ids):
+            raise osv.except_osv(_('Error!'), _('Please create an employee and associate it with this user.'))
         employee = proxy.browse(cr, uid, record_ids[0], context=context)
         if employee.product_id and employee.product_id.property_account_income:
             return employee.product_id.property_account_income.id
diff --git a/addons/hr_timesheet_sheet/wizard/hr_timesheet_current.py b/addons/hr_timesheet_sheet/wizard/hr_timesheet_current.py
index fdab774a250..ef145f64ad8 100644
--- a/addons/hr_timesheet_sheet/wizard/hr_timesheet_current.py
+++ b/addons/hr_timesheet_sheet/wizard/hr_timesheet_current.py
@@ -35,7 +35,7 @@ class hr_timesheet_current_open(osv.osv_memory):
 
         user_ids = self.pool.get('hr.employee').search(cr, uid, [('user_id','=',uid)], context=context)
         if not len(user_ids):
-            raise osv.except_osv(_('Error!'), _('Please define employee for your user!'))
+            raise osv.except_osv(_('Error!'), _('Please create an employee and associate it with this user.'))
         ids = ts.search(cr, uid, [('user_id','=',uid),('state','=','draft'),('date_from','<=',time.strftime('%Y-%m-%d')), ('date_to','>=',time.strftime('%Y-%m-%d'))], context=context)
 
         if len(ids) > 1: