Under the new targets, partners must spend 10 hours each day on either billable client work or other firm-related activities, such as knowledge management, business development or other management activities. This is an increase of 40 per cent on the previously required 35-hour minimum week.

"This is an attempt to set a clear standard among partners - it is important that they set a positive example for all lawyers and non-lawyers across the firm," senior partner Charlie Geffen told Legal Week.