A global technology company under IRS scrutiny over tax-exempt staff lunches needed to prove employees responded to emergencies during lunch hours. From 1.5M emails and documents, Lighthouse used key document identification, geo-targeting, and advanced linguistic modeling to reduce the set to 37,500 in just two weeks with only two experts. They overcame challenges with time zone inconsistencies and email threading, classifying documents by emergency level and linking responses to employees. The analysis showed over 50% of employees responded during lunch, strengthening the company’s case while saving up to 500% in time and 240% in cost compared to linear review.

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