Value-Added vs Non-Value-Added Time

Every activity in a process falls into one of three categories:

Value-Adding Activities (VA): Activities that transform materials or information into the product or service the customer wants. These are activities the customer is willing to pay for, and they produce the output correctly the first time. In the context of time measurement, value-added time corresponds to the actual process time at each step.

Non-Value-Adding Activities (NVA): Activities that consume resources but don’t directly contribute to the product or service. This includes waiting times, delays, rework due to quality issues, unnecessary approvals, and redundant handoffs. Non-value-added time is the gap between system process time and flow time.

Business-Value-Added Activities (BVA): Activities that don’t directly add value to the product or service but are required to operate the business. Not having these activities would be detrimental to the organization overall. Examples include legal compliance steps, safety procedures, financial auditing, and administrative reporting.

Example

A coffee shop order process with a flow time of 25 minutes:

Value-added: Taking the order (1 min), making the drink (5 min), preparing food (3 min), serving (1 min) = 10 minutes. Non-value-added: Waiting in queue (12 min), drink sitting on counter before being picked up (2 min) = 14 minutes. Business-value-added: Processing payment (1 min) = 1 minute.

Only 10 out of 25 minutes (40%) is value-adding. This ratio is typical, many processes have a value-added percentage below 50%.

Why It Matters

VA/NVA analysis is one of the most powerful tools for identifying improvement opportunities. The goal is to eliminate or reduce non-value-added time, minimize business-value-added time where possible, and protect value-added time. When the gap between system process time and flow time is large, most of that gap is non-value-added time, and it’s often where the quickest wins can be found.