BigHand report flags rising client attrition as law firms race ahead on AI

BigHand’s sixth annual Legal Workflow Leadership Report says 95% of law firms are seeing higher client attrition, with service delivery concerns driving much of the loss. The report warns that AI adoption across support functions is outpacing the workflow redesign, role clarity and operational visibility firms need to protect client service and margins.

Why it matters: - Client retention is now tied to how law firms run support work, not just legal work. - The report says firms are adopting AI in support services faster than they are building the structure needed to prove productivity gains and protect client experience. - Rising attrition, slower service and more lawyer time spent on admin can hit realization, margins and revenue.

What happened: - BigHand released its sixth annual Legal Workflow Leadership Report, based on responses from more than 800 law firm leaders in the UK and North America. - The report says 95% of firms report increased client attrition. - Thirty-three percent of firms name service delivery concerns as a primary driver of attrition. - Ninety-six percent of firms now use AI in support services. - Only 27% have redesigned support roles around AI.

The details: - Forty-six percent of firms say AI-generated outputs require additional supervision. - Thirty-five percent report increased reliance on lawyers for administrative tasks because of support staff retirement. - Forty-five percent say lawyers are spending more time checking and verifying work. - Fifty-one percent expect to lose between 21% and 50% of support staff to retirement. - Twenty-four percent say support staff turnover directly affects billable hours and revenue. - Forty-one percent have formally reviewed support task types to identify where AI or automation can have the biggest impact. - Sixty-two percent report having workflow technology. - Only 21% use structured tools for task allocation and delegation. - The report says lawyer-to-support delegation often still happens through email, informal requests and individual working habits. - That limits leaders’ ability to track demand, capacity, utilization and performance. - The full BigHand Legal Workflow Leadership Report 2026 is available to download now.

Between the lines: - The report suggests the AI problem in law firms is less about access to technology and more about operating discipline. - If workflows remain fragmented, AI may add another layer of supervision instead of reducing friction. - The findings also point to a succession problem, as retirement is putting more pressure on remaining support teams. - Robert Millard of Cambridge Strategy Group said firms need a clearer picture of how work is captured, allocated and delivered so the right resource handles the right work. - Michelle Connolly of Opensity Solutions said service slows when experienced support staff leave and clients feel the impact directly. - Denise Dellaratta of Fox Rothschild said support staff should be treated as a strategic asset, not a reactive back-office function.

What's next: - BigHand says the report examines where firms are seeing pressure now, where operational gaps remain and how support models are starting to evolve. - Firms are likely to face more pressure to redesign support roles, improve workflow visibility and define governance around AI. - The report argues that real-time operational data will become more important as firms try to connect support work to client retention and business performance.

The bottom line: - Law firms are using AI, but many have not yet changed the operating model needed to make AI pay off for clients, lawyers and the bottom line.