Paul Ducey
DuceyWORK ← All Skills
✓ Free · MIT License Manufacturing Healthcare

Gemba Walk

The structured observation that turns floor time into improvement fuel. Gemba is Japanese for "the actual place," where value is created. This skill gives observation walks a structured lens, a written output, and a clear handoff to the next improvement tool.

What a Gemba Walk Is (and Isn't)

You are there to understand, not to fix.

A gemba walk is an observation. It is not a management tour, not a problem-solving session on the floor, and not a spot audit. The purpose is to see the actual work, understand how it flows (or doesn't), and collect observations that can be analyzed away from the point of production.

The failure mode of most gemba walks is a lack of output: a manager walks the floor, talks to a few people, sees a few things, and returns to the office with nothing written down. Two weeks later, nothing has changed. The skill exists to close that gap.

The rule of gemba

Do not make changes on the floor during the walk. If you see an immediate safety hazard, address it, but note everything else and bring it back. Fixing things in the moment skips the analysis step, builds the habit of spot-fixing over systematic improvement, and signals to operators that gemba = criticism.

The 5 Observation Lenses

A structured lens for every walk.

Each lens directs attention to a different dimension of the work. The skill prompts for observations under each one rather than letting the walk drift toward whatever is most visible or most familiar.

🦺
Safety
What could hurt someone? Ergonomic strain, pinch points, crowded aisles, unlabeled materials, workarounds that bypass safety devices. Do not walk past a live hazard without acting on it.
✅
Quality
Where are defects made, and where are they caught? Look for rework loops, inspection steps that catch the same thing repeatedly, and any point where operators check their own work before passing it on.
🌊
Flow
Where does work stop? Look for queues between operations, waiting operators, batching, and steps that run ahead and pile up WIP downstream or run behind and starve the next step.
📐
Standard Work
Is the work being done the way the standard says? Look for operators not following the posted sequence, tools not in their designated place, and standard work documents that are outdated or modified by hand.
💬
Engagement
Do people understand how they are performing and why it matters? Look for team boards that aren't updated, metrics no one references, and improvement ideas that are raised but never acted on.

Questions at the Gemba

What to ask vs. what not to ask

Questions at the gemba should open up the process, not put the operator on the spot. The goal is to understand how the work works, not to evaluate the person doing it.

✓ Ask
  • "Can you walk me through what you do first?"
  • "What makes this step hard to do consistently?"
  • "What happens when [this condition] occurs?"
  • "Where do you go when you need [this material/information]?"
  • "What's the one thing that would make this easier?"
  • "How do you know when this step is done correctly?"
✗ Avoid
  • "Why did you do it that way?" aimed at the person sounds like a challenge. Ask why about the process instead: "What makes this step hard?"
  • "Shouldn't you be following the procedure?" leads to shutdown
  • "How long does this take you?" creates performance anxiety
  • Leading questions that imply what you already think is wrong
  • Questions about other people or shifts, since this isn't the place
  • Any question that can be answered "yes" or "no" and nothing more

What the Skill Produces

A prioritized observation list, not a wall of notes.

Every observation is structured: what was seen, the lens it falls under, a severity rating, and the recommended next tool. The output is designed to feed directly into an improvement queue or a kaizen event scoping session.

Example output: cell B-4, assembly department

Three observations from a 45-minute walk. Severity: H = address this week, M = next event, L = monitor.

Observation Lens Sev Next Tool
Operators walking to far end of cell for torque wrench, avg 4 trips/hour observed Standard Work H Standard Work / 5S
WIP pile of ~80 units between Form and Pierce, no FIFO lane visible Flow M VSM Calculator
Operator on 2nd shift using different torque sequence than standard, not aware of update Quality / Engagement H TWI Job Breakdown Sheet

Common Gemba Mistakes

Three ways a gemba walk produces nothing

Walking without a focus
A walk with no lens produces a general impression, not observations. The eye goes to what is most obvious, like a messy area or a slow-looking operator, and misses the systematic issues that are invisible until you know what to look for.
Asking leading questions
Questions that imply an answer stop operators from telling you what's actually happening. If you already know what's wrong before you ask, you're not observing. You're confirming. Observations made before questions are asked are more reliable than observations made after.
Making changes on the spot
When a manager walks the gemba and fixes things in the moment, operators learn to hide problems (so they don't get "fixed") and to wait for management to solve things instead of raising them. Observation and improvement are separate activities. This walk is observation.

Examples

Works on the plant floor and in the clinic

🏭 Assembly Cell Walk
🏥 ED Patient Flow Walk

A 45-minute walk through a five-station assembly cell with a focus on flow and walking waste. The skill structured the debrief from verbal notes into a prioritized observation list: 7 observations across the five lenses, 2 rated high severity, with recommended next tools for each.

Input given

"We walked the cell for about 45 minutes. I noticed [description]. The line leader mentioned [description]. On the way out I saw [description]." Three paragraphs of notes, unstructured. The skill sorted, categorized, and rated them.

A patient flow observation in an emergency department, from triage through disposition. The skill uses clinical vocabulary throughout: "patient," "provider," "boarding," "throughput." The engagement lens surfaces observations about whether nursing staff know the department's current wait-time target and whether they have a channel for raising process concerns.

Healthcare note

Safety observations in a clinical gemba walk are flagged for immediate escalation to the charge nurse. The skill does not queue them with everything else. Patient safety issues are not held for the next improvement event.

What you get

A real run on the sample data

Unedited output. The sample message at the top went to Claude Sonnet 4.6 (an earlier-generation model, so a newer one may word things differently) with this skill pasted in, the same way the steps below show, on September 29, 2026. Scroll inside the frame to read the whole reply.

Gemba Walk: the full reply from a real run on the sample data, ending with what the skill did, what still needs a human, and one next step.

Open the full image

Installation

Describe what you saw. Get the structured output.

1
Copy the skill. Open gemba-walk.md, select all the text and copy it.
2
Paste it into Claude. In claude.ai, start a new chat and paste it as your first message, or paste it into a Project's instructions so it's there every time. The free plan works, and free accounts can keep up to five Projects.
3
Before the walk: say "prepare a gemba walk for [area/process]" and the skill produces a pre-walk focus sheet with the five lenses customized to that area. After the walk: dump your notes and it produces the prioritized output list.
4
See a finished example first (optional): the worked examples are in the download, in the resources/examples folder.

Related Skills

Gemba findings feed directly into other tools