Queries are available in the HIP system to assist Leave Keepers so that excessive LWOP can be monitored.  The query HIP_TL_LWOP_IN_ABS_MGMT gives you a listing of employees with LWOP.  Additionally, the query HIP_TL_LESS_THAN_40_SCK_VAC will show you employees who have very low balances.
Click here to view a list of queries available to Time and Leave Keepers.