This document discusses metrics for measuring the performance of HR business partners. It defines input, output, and outcome measures. Input measures include training and remuneration costs. Output measures include the number of customers served per employee and financial metrics like profit per employee. Outcome measures consider how employees respond and include resignation and engagement rates. The document also provides examples of specific metrics that could be measured, such as average revenue, costs, and profit per employee. It notes what data is currently available and needs to be collected to calculate comprehensive metrics.