Abstract: Organizations increasingly recognize that workforce costs represent strategic investments rather than mere operating expenses, yet many struggle to articulate human capital decisions in financial terms that resonate with executive leadership. This article examines six evidence-based approaches for quantifying the return on investment of strategic human resource initiatives: connecting employee attrition to customer outcomes, pricing upskilling gaps, integrating talent strategy into mergers and acquisitions, modeling workforce risk scenarios, quantifying opportunity costs of unfilled roles, and forecasting people costs as growth drivers. Drawing on organizational behavior research, financial analytics, and cross-industry applications, we demonstrate how HR functions can shift from reactive cost centers to proactive value creators. Implementation examples span technology, healthcare, professional services, manufacturing, retail, and financial services sectors. Organizations that successfully translate workforce metrics into business language strengthen their competitive positioning, improve capital allocation decisions, and build sustainable talent advantages.