Everybody who has been through a Lean introduction can list the seven wastes. Very few teams tag their actual observations with them, and the ones that do usually stop after a few months.
That is a shame, because the taxonomy is close to useless as a teaching device and genuinely powerful as a data structure.
The list, briefly
- Transport — moving material that did not need moving.
- Inventory — stock sitting idle, tying up cash and hiding problems.
- Motion — people moving more than the work requires.
- Waiting — idle time between steps.
- Overproduction — making more or sooner than pull requires.
- Overprocessing — doing more to the product than the customer values.
- Defects — rework, scrap, and the inspection they generate.
In a training room this is a memorisation exercise. On the floor, attached to real observations, it becomes something else: a dimension you can count along.
What tagging actually buys you
A single issue tagged MOTION tells you nothing you did not already know from reading it. Ninety days of issues, tagged, tell you that motion is 38% of everything raised in Inbound and that it clusters in aisles 58 to 64.
That second sentence is a layout decision. You cannot reach it by reading twenty-three reports, and no individual observation contains it. It only exists in aggregate.
The tag is not for the issue. It is for the hundred issues after it.
Why tagging dies
Three failure modes, all avoidable.
It happens too late
If the tag gets applied at a desk on Friday, it is a guess based on a sentence, not a judgement based on what you saw. Guesses feel pointless to make and are, so people stop.
The categories overlap
A pallet staged in the wrong place causes both transport and motion. People freeze on the choice and eventually abandon the field.
The fix is a decision rule, not a definition: tag the waste you observed, not the one you inferred. If you watched a person walk, it is motion. If you watched a forklift move something twice, it is transport. Do not model the causal chain — just record what your eyes did.
Nobody ever shows the aggregate
If the tag never comes back as a chart, it is a field people fill in for someone else's benefit. Show the ninety-day cluster view to the team that generated it and tagging becomes self-sustaining within a month.
Where the eighth waste fits
Unused human potential is usually added as an eighth. It is real, and it is the wrong shape for this field — you cannot point at it standing in an aisle.
It shows up instead in a different number: how many issues come from people who are not managers. If that share is climbing, you are using potential. If it is near zero, you have the eighth waste regardless of what your other charts say.
Starting from nothing
Do not roll out all seven at once. Start with the three that dominate almost every operation — motion, waiting and transport — and let people use "other" for the rest. Add categories when the "other" pile gets big enough to be interesting.
Three tags that get used beat seven that get skipped.