diff --git a/addons/hr/views/hr_employee_views.xml b/addons/hr/views/hr_employee_views.xml
index 2bc75673192..d8abfc226e6 100644
--- a/addons/hr/views/hr_employee_views.xml
+++ b/addons/hr/views/hr_employee_views.xml
@@ -121,7 +121,8 @@
                                         </group>
                                         <group string="Schedule">
                                             <field name="resource_calendar_id" required="1"/>
-                                            <field name="tz"/>
+                                            <field name="id" invisible="1"/>
+                                            <field name="tz" attrs="{'required': [('id', '!=', False)]}"/>
                                         </group>
                                     </div>
                                 </div>