Case Study: Steel Dynamics achieves $870K in medical spend savings with Castlight Health

Steel Dynamics saves an estimated $870k on medical spend using Castlight

Steel Dynamics, one of the largest U.S. steel producers and metals recyclers with facilities across the United States and Mexico, sought to make employees more informed healthcare consumers, boost benefits engagement, and prove the value of its benefits investments. Measuring the return on those investments was complex, so the company needed a way to both engage its diverse workforce and quantify impact.

By deploying Castlight (first adopted in 2015) and measuring Value on Investment (VOI) across cost savings, engagement, and satisfaction, Steel Dynamics achieved a 1.5% reduction in medical spend—an estimated $870,000 saved in 2017—using a risk-adjusted DxCG model from Verscend. Employee engagement reached 86% with a 53% 90-day return rate, and users rated Castlight with a 50 NPS, enabling data-driven decisions and justification of ongoing benefits investment.

Steel Dynamics