Case Study: Weitz & Luxenberg achieves full call-to-retainer attribution and 28% lower cost-per-retainer with Invoca

Using Call Tracking and Analytics to Get Full Visibility of the Customer Journey

Weitz & Luxenberg is a national law firm that advertises across TV, radio, direct mail and digital channels, with 31% of clients finding them online. Their challenge was that 69% of potential clients call rather than submit forms, and existing tracking phone numbers only showed call counts or duration—leaving a critical marketing attribution blind spot and preventing them from linking retained cases to specific ad spend.

They implemented Invoca call tracking and Lunar’s Shuttle to feed call data into Salesforce, creating end-to-end attribution and granular insights across every channel. That enabled a 1:1 link between marketing dollars and retained clients and drove measurable gains: a 14% higher conversion rate by routing calls to specialists, a 28% decrease in cost per retainer, and 17% more leads attributed to online campaigns, with further PBX integration planned to enrich customer profiles.

Weitz & Luxenberg

Bill Denninger

Director of Business Operations