The RETAIN Framework (Retention Evaluation and Turnover Analysis for the Investment in Nursing) standardizes the process of mapping the complete nurse turnover continuum and quantifying the true financial cost of each separation event across all phases: separation, vacancy, recruitment, hiring, and onboarding. By anchoring cost accounting formulas to operational data and making vacancy coverage strategy a primary cost driver rather than a peripheral assumption, RETAIN generates accurate per-nurse and system-level turnover costs that reflect local conditions rather than inflation-adjusted legacy benchmarks. These financial insights feed into a tangible modeling dashboard that enables nursing and finance leaders to evaluate retention investments as cost-avoidance strategies against a measurable baseline, directly linking workforce policies to projected savings. Learner Objectives State the current per-nurse cost of turnover using the RETAIN Framework. Explain how to apply the RETAIN Framework to support workforce investment.