Case Study: Hanover Insurance Group achieves orchestrated, defensible e-discovery and $2M+ in savings with Exterro

The Hanover Insurance Group Streamlines E-Discovery & Internal Investigations

Hanover Insurance Group, a 160‑year‑old property & casualty insurer with 4,000+ employees, faced a fragmented, costly e‑discovery process that relied heavily on outside counsel and multiple vendors. Under Linda Luperchio’s leadership the team set out to eliminate handoffs, reduce hosting and counsel expenses, and gain intelligent metrics and defensibility across legal holds, collections, review and production.

They chose Exterro’s Orchestrated E‑Discovery Platform—implemented via a rigorous 93‑step UAT—to centralize legal hold, data mapping, e‑discovery data management, managed review and a 360‑view audit trail. The platform simplified training and internal collaboration, extended to internal investigations and other business units, and secured controlled outside‑counsel access. Results include an average 75% per‑case cost reduction, over $2M saved versus external costs in 12 months, nearly $1.5M in hosting savings from in‑house storage, and a defensible, auditable process.

Hanover Insurance Group

Linda Luperchio

Director, Information Lifecycle Governance, eDiscovery and Administration