Key takeaways
Short answer: Value-added activity transforms the product in a way the customer will pay for. Everything else — moving, waiting, inspecting, reworking, storing — is non-value-added. Some non-value-added work is necessary (compliance, safety); the rest is waste. In most processes, value-added time is a tiny fraction of total lead time, which is why eliminating the rest is so powerful. See also manufacturing cycle effectiveness.
Value-added activity physically changes the product toward what the customer ordered and is willing to pay for — shaping, assembling, transforming. The test is simple: would the customer pay for this step if they could see it, and is it done right the first time.
Non-value-added activity consumes time and cost without adding worth: transport between steps, waiting in queues, inspection, rework, storage. It feels like work and shows up as busy stations, but it adds nothing the customer values.
A part takes three days from raw material to shipment. Map it, and the actual value-added processing — the cutting, machining and assembly the customer pays for — totals 90 minutes. The other three days are waiting in queues, moving between cells, sitting in inspection, and storage. Value-added time is under 3% of lead time. No amount of speeding up the 90 minutes helps much; the opportunity is the three days of non-value-added time hiding in between.
Some non-value-added work is genuinely required — regulatory checks, safety steps, mandated documentation. Separate that from pure waste (waiting, double-handling, unnecessary movement) and attack the pure waste first. Calling necessary compliance "waste" is as wrong as ignoring the real waste.
Walk the process and classify each step as value-added, necessary non-value-added, or pure waste. The waiting and movement between value-added steps is usually where most lead time hides — exactly what value-stream mapping is designed to reveal.
1. Optimising the value-added steps. They are a tiny fraction of lead time; the waste is between them.
2. Calling all non-value-added work waste. Some is necessary compliance and safety.
3. Measuring station efficiency, not flow. Busy stations can coexist with huge waiting.
4. No map. Without classifying steps, the waste stays invisible.
Non-value-added time at the machine shows up as Performance and Availability loss. Eliminating it lifts OEE and compresses lead time at the same time — the link to manufacturing cycle effectiveness, where value-added time over total time is the headline ratio.
Fabrico makes the waiting and non-value-added machine time visible, so you can attack the waste between value-added steps. Book a demo to see where time is really going.
No — some is necessary, like compliance and safety; the rest is pure waste to remove.
Often a small single-digit percent of total lead time.
Walk and classify each step; map the value stream.
Non-value-added machine time shows up as Performance and Availability loss.
The waiting and movement between value-added steps, not the value-added steps themselves.
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