Within some organisations the manager must self-serve their employee's personal information in the case of an emergency, and the HR team are not available due as it may be overnight. This would include Managers viewing their direct reports' home phone number or mobile (if they have not shown up for work), and their emergency contact phone numbers (incase of a work accident). I would suggest managers view this information on their direct reports via My Team within Employee Self Service. If this information is not available for Managers, they must keep their own records outside of the system, which may become out of date or unsecured.