Guides
Why a suggestion form should take 3 steps
For an employee filling it in on a phone on the shop floor, every extra field is a reason to give up. The logic behind short forms and a good 3-step example.
1 September 2026 · 1 dk
Before–after in Kaizen: how to measure the gain
Don't squeeze the gain into one formula. Line-by-line calculations for time, scrap, energy and safety, plus the three questions a committee should ask.
10 September 2026 · 1 min read
A single number misleads
'120,000 per year' is impressive but untraceable. Write each gain on its own line with its formula: (old time − new time) × daily quantity × working days × hourly cost.
Four kinds of gain
- Time: minutes per piece × annual quantity
- Scrap: scrap-rate difference × material cost
- Energy: kWh difference × unit price
- Safety: near-miss count, scored (don't force a monetary value)
The committee's three questions
- Are the before and after photos taken from the same angle?
- Where does every input of the gain formula come from?
- Who re-measures in three months?
These questions turn the meeting from debate into scoring.