Pair similar tasks completed recently with tasks performed after the automation launches. Match by complexity, assignee, and context to reduce noise. Record start‑to‑finish time, touches, and rework. Calculate the percentage change and absolute minutes saved. Repeat across several weeks to smooth anomalies. This matched approach defends against shifting workloads and gives stakeholders a fair, believable picture of genuine time savings tied to real work.
Enable lightweight logging around the automated step: trigger time, completion time, failures, and manual overrides. Tie each event to a task identifier so you can stitch timelines across systems. With these trails, you can see bottlenecks moving, quantify retries avoided, and attribute wins to the exact intervention. Event data turns anecdotes into durable evidence and supports rollbacks or tuning when performance drifts or workload patterns evolve.