HR needs to submit various reports to the Management team. Some of these reports are submitted periodically (weekly, bi-monthly, monthly, etc) and will be in a predefined format as required by the Management. From a Management perspective this is a critical activity as they would use it in their planning and organization reporting processes.
Frequently, a lot of ad hoc reports are also requested by either Management or Line Managers. HR needs to ensure that they are available for timely and accurate decision making.