diff --git a/addons/hr/hr.py b/addons/hr/hr.py
index 92bde22086e..2f09d165005 100644
--- a/addons/hr/hr.py
+++ b/addons/hr/hr.py
@@ -216,7 +216,7 @@ class hr_employee(osv.osv):
             (model, mail_group_id) = self.pool.get('ir.model.data').get_object_reference(cr, uid, 'mail', 'group_all_employees')
             employee = self.browse(cr, uid, employee_id, context=context)
             self.pool.get('mail.group').message_post(cr, uid, [mail_group_id],
-                body='Welcome to %s! Please help them take the first steps with OpenERP!' % (employee.name),
+                body='Welcome to %s! Please help him/her take the first steps with OpenERP!' % (employee.name),
                 subtype='mail.mt_comment', context=context)
         except:
             pass # group deleted: do not push a message
diff --git a/addons/hr_holidays/hr_holidays.py b/addons/hr_holidays/hr_holidays.py
index be8330c40a0..b3c9fb244f0 100644
--- a/addons/hr_holidays/hr_holidays.py
+++ b/addons/hr_holidays/hr_holidays.py
@@ -178,7 +178,8 @@ class hr_holidays(osv.osv):
     ] 
     
     _sql_constraints = [
-        ('type_value', "CHECK( (holiday_type='employee' AND employee_id IS NOT NULL) or (holiday_type='category' AND category_id IS NOT NULL))", "The employee or employee category of this request is missing."),
+        ('type_value', "CHECK( (holiday_type='employee' AND employee_id IS NOT NULL) or (holiday_type='category' AND category_id IS NOT NULL))", 
+         "The employee or employee category of this request is missing. Please ask HR to link your user login to an employee or employee category. "),
         ('date_check2', "CHECK ( (type='add') OR (date_from <= date_to))", "The start date must be anterior to the end date."),
         ('date_check', "CHECK ( number_of_days_temp >= 0 )", "The number of days must be greater than 0."),
     ]