Building upon the Life-Value Reflow Theory, this paper extends the analytical framework from macroeconomic and platform levels to the meso-level of the firm. A company is conceptualized as a bounded local reflow subsystem in which irreversible individual life duration (T) is concentrated, amplified, and redistributed. A set of computable indicators is developed to diagnose how effectively employee time is transformed into confirmed value, the extent of structural extraction by organizational nodes, the proportion returned through monetary and non-monetary channels, and the losses caused by bureaucratic friction and coordination noise. Rather than presenting a single empirical snapshot, this paper establishes a generalized Diagnostic Protocol. By defining theoretical boundary conditions, a recruitment filter postulate, and four organizational archetypes, it provides a rigorous mathematical scaffolding for future econometric analysis and corporate consulting. The protocol yields actionable insights for talent retention, compensation design, organizational stability, and noise reduction, while maintaining strict consistency with the macroeconomic accounting closure condition and the nonlinear dynamical system presented in companion works.