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Kaizen Baseline

What Is Standard Work?

Standard work is the current best-known method for performing a task. It defines the sequence of steps, the time for each step, and the work-in-process needed. It is not a permanent procedure — it is the baseline from which you improve.

Without standard work, you cannot improve. If every operator does the job differently, you cannot measure, you cannot identify waste, and you cannot train consistently. As Taiichi Ohno said: "Without standards, there can be no kaizen."

Standard Work ≠ Work Instructions

Work instructions tell someone what to do. Standard work defines the optimal sequence, timing, and WIP for a process tied to takt time. Standard work is owned by the people who do the work and is updated whenever a better method is found.

The Three Documents of Standard Work

1. Production Capacity Sheet

Lists every process step with its manual time, machine time, and changeover time. This tells you the true capacity of each step and identifies which step is the constraint. Use the cycle time calculator to validate.

2. Standard Work Combination Sheet

A time-based chart showing the relationship between manual work, machine work, and walking for one operator across one cycle. It makes waste visible — you can literally see the waiting and walking.

Manual Work
+
Machine Time
+
Walk Time
=
Cycle Time
Must be ≤ Takt Time for the process to keep up with demand

3. Standard Work Layout

A floor plan showing the physical path the operator walks, the location of machines and materials, WIP points, and quality checks. This makes the flow visible and highlights unnecessary movement.

How to Create Standard Work

Calculate Takt TimeAvailable production time ÷ customer demand. This is the heartbeat. Every process must complete one cycle within takt time. Use the takt time calculator.
Observe the Current StateWatch 10+ cycles. Time each element. Note variation between operators. Do not design standard work from a desk — go to the gemba.
Identify the Best MethodAmong the variation you observed, which sequence produces the best quality in the least time with the least effort? That becomes the standard.
Document It VisuallyCreate the three documents. Use photos, not just text. The best standard work fits on one page and can be understood in under 60 seconds.
Train and ValidateTrain every operator to the standard. Observe them performing it. Coach gaps in real time. Certification means they can do it correctly, consistently, without help.
Audit and ImproveLeader standard work includes regular standard work audits. When you find a deviation, ask: Is the standard wrong, or is the operator struggling? Both lead to improvement.

Common Mistakes

✅ Standard Work Done Right
  • Created with operators, not for them
  • Posted at the workstation, visible
  • Updated every time a better method is found
  • Audited regularly by supervisors
  • Tied to takt time and customer demand
❌ Standard Work Theater
  • Written by engineering, never consulted
  • Filed in a binder no one opens
  • Last updated 3 years ago
  • No one audits compliance
  • Not connected to actual production pace

🎯 Key Takeaway

Standard work is not bureaucracy — it is freedom. It frees operators from guessing, frees supervisors from firefighting, and frees the organization to improve systematically. If you are starting a lean transformation, standard work is step one.

Interactive Demo

Build a standard work combination sheet. Adjust element times and see how they compare to takt time.

⚡
Try It Yourself
Standard Work Combination Sheet
▼
Adjust manual, walk, and machine times for each work element. The stacked bar shows cycle composition. Red outline means total exceeds takt time.
55s
30s90s
Cycle Time Breakdown
Pick parts12s
Load machine8s
Machine cycle22s
Inspect part12s
Pack & place10s
Takt: 55s
Manual
Walk
Machine
ElementManual (s)Walk (s)Machine (s)
Pick parts
Load machine
Machine cycle
Inspect part
Pack & place
Cycle Exceeds Takt Time
Total cycle (64s) exceeds takt (55s) by 9s. This station is a bottleneck.
Improvement Opportunities
1. Walk time is 17% of cycle — improve layout to reduce travel
2. Cycle exceeds takt by 9s — rebalance or reduce waste
64s
Total Cycle
31s
Manual Time
11s
Walk Time
56%
Utilization
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Take this to a room

The running order

For supervisors and operators. They should leave able to tell standard work from a work instruction, and to name who owns theirs.

7 beats · 10 min
  1. 1

    It is not a work instruction

    This distinction is the whole lesson, and most plants get it wrong.

    • A work instruction tells someone what to do.
    • Standard work defines the best sequence, its timing, and the WIP the process holds - tied to takt.
    • It is owned by the people doing the work, and it changes the day a better method is found.

    Ask the room Where is our standard work kept, and who last changed it?

  2. 2

    Three documents, one page

    Takt, the work combination, and the standard work chart. If it does not fit on a page, nobody will use it.

    • It should be understandable in under 60 seconds.
    • Use photos, not paragraphs.
    • Posted at the workstation, not filed in a binder.
  3. 3

    Takt sets the pace

    Available time divided by customer demand. Every process must finish a cycle inside that.

    • This is the heartbeat the standard is built around.
    • Without takt, the standard is just a description of what someone happens to do.
    • Manual work plus machine time plus walk time equals cycle time - walking counts.
  4. 4

    Watch ten cycles before you write anything

    You do not design standard work. You find it, in the variation already in front of you.

    • Time each element across ten-plus cycles and multiple operators.
    • The variation between them is the data.
    • Which sequence gives the best quality, in the least time, with the least effort? That is the standard.

    Ask the room Do two operators on our line do the job the same way?

  5. 5

    Train, then validate

    Training is not telling. Certification means they can do it correctly and consistently without help.

    • Train every operator to the standard, then observe them doing it.
    • Coach the gaps in real time, at the station.
    • Certified means unassisted, not informed.
  6. 6

    The audit question

    When you find a deviation, there are exactly two possibilities, and both are useful.

    • Either the standard is wrong, or the operator is struggling.
    • Both lead to an improvement. Neither leads to blame.
    • Standard work audits belong in leader standard work, weekly.
  7. 7

    Theatre versus the real thing

    You can tell in ten seconds which one a plant has.

    • Theatre: written by engineering, never consulted, three years old, nobody audits it.
    • Real: made with operators, posted at the station, updated whenever a better way is found, tied to takt.
    • Standard work is not bureaucracy - it is what frees a supervisor from firefighting.

    Ask the room Which of those two do we have here, honestly?

Related Guides

🏭 Lean Manufacturing
Core lean principles
♻️ Kaizen
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