Orion Law Management Orion Desktop Articles Reporting KPI - Billable Hours Per Legal Assistant Updated April 14, 2025 18:43 This measurement may be used as a basis for targeting staff levels and increasing/reducing the existing number of Legal Assistants based on usage or the billable hour. The number is calculated by dividing the total billable hours for all Timekeepers by the total number of Legal Assistants. Was this article helpful? Yes/No