This document discusses measuring the return on investment (ROI) and impact of workforce development programs on employers. It argues that impact is a better metric than ROI because (1) employers do not usually collect the data needed for ROI calculations, (2) ROI is not how employers make human resource decisions, and (3) determining precise ROI is problematic due to multiple influencing factors. The document provides examples of measuring impact, such as through employer testimonials and surveys on competitiveness, cost reduction, and satisfaction. It also lists resources available through the National Network of Sector Partners.