This document is about guidance from the U.S. Department of Labor's Employee Benefits Security Administration on conducting investigations and facilitating voluntary compliance efforts related to defined benefit pension plans' administration of terminated vested participants' benefits. It outlines the key objectives of the Terminated Vested Participants Project, the types of information EBSA requests during investigations, common errors EBSA looks for, and how EBSA aims to work with plan fiduciaries to remedy identified problems and ensure eligible participants and beneficiaries receive their promised benefits.