TPS Blog 5/12 : Standardized Work – Why the Best Shops Do It the Same Way, Every Time

By thesupplier • August 2, 2025 • 3 min read

Ever faced a part rejection… only to hear:
“Sir, this operator did it differently today.”
Or
“Last time your drawing didn’t say we need to deburr this side…”

If your supplier can’t repeat success, you’re buying luck — not process.
That’s where Standardized Work changes everything.


What Is Standardized Work?

Standardized Work simply means:

  • Everyone does the job the same way

  • In the same sequence

  • Using the same tools and checkpoints

It’s not about turning operators into robots.
It’s about turning quality into a habit — not a hope.

When every team member uses their own style, quality becomes a gamble.
But when Standardized Work is followed, every batch feels like déjà vu — and that’s a good thing.

Common tools used:

  • SOP (Standard Operating Procedure) boards

  • Step-by-step photos at workstations

  • Time tracking for each cycle

  • Visual checklists (before moving to next stage)


Real Example – Rajkot VMC Shop: 2 Operators, 2 Outcomes

A VMC shop in Rajkot ran the same aluminum part on the same machine.
Operator A finished in 11 minutes with flatness of 0.02 mm.
Operator B took 15 minutes — and missed tolerance.

Why?
One used the air gun before the second pass. One didn’t.

The fix:

  • They created a laminated 5-step SOP

  • Pasted it next to the controller

  • Both operators followed identical steps

Next 30 batches?
All passed with ±1 minute timing and zero rejections.


Real Example – Sheet Metal Shop Fixes Inconsistency With One Simple Board

A fabricator making mild steel panels kept hearing complaints:

  • “Parts are scratched”

  • “Chamfer is missing”

  • “Plastic film was still on during bending”

Cause: No one tracked small steps. Operators forgot them in mid-batch rush.

The fix:

  • Installed a “Did You Do It?” board

  • Steps included:

    • Film peel-off

    • Deburr edges

    • Check bend angle

    • Wipe clean before packing

Result?
Rejections dropped by 61%. QC team’s job became confirmation — not investigation.


Why Buyers Should Care

Without Standardized Work:

  • One good batch ≠ the next batch

  • New operators = new problems

  • QC becomes detective work instead of validation

With Standardized Work:

  • Output stays consistent

  • Lead time gets predictable

  • You know what to expect — every time

And in a high-mix job shop world, predictability is profitability.


What TheSupplier Looks For

Before we approve a factory, we ask:

  • Are SOPs visible, updated, and followed?

  • Can any trained operator pick up a job and do it right?

  • Are there in-process checks — not just final QC panic?

If yes — we take them forward.
If no — we hold back until they’re ready.

Because great machines don’t guarantee great parts.
Great habits do.


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📚 References