ORDREL / LEARN

Lean methodology, applied to everyday work

Start with a recurring problem. Understand the work. Test a change and check the result.

Prepared by ORDREL · Updated September 13, 2026 · English guide

What is Lean methodology?

Lean is an approach to improving how work creates value for the customer. It examines delays, errors and other wasted effort, with the people doing the work involved in improving the process. It is more than working faster or choosing a calculator.

ASQ’s Lean overview describes applications in manufacturing and service operations. The Lean Enterprise Institute connects Lean thinking with purpose, people and process.

Understand value: Define the result the customer needs and what makes it acceptable.
See the whole flow: Follow work through its steps, queues, decisions and handovers.
Improve flow and respond to demand: Investigate why work waits or returns for correction. Avoid making extra work just to keep one step busy.
Learn with the team: Test a focused change, review evidence and make useful changes part of everyday work.

How to start with one process

Define the problem. State what happens, where, when and how often. Decide what a better result would mean.
Observe the work. Map the steps and measure a comparable sample. Separate working time from waiting.
Establish a baseline. Record demand, time, accepted output and the problem rate using consistent definitions.
Choose and test a change. Investigate possible causes with the team. State what evidence would support or reject the proposed countermeasure.
Review and sustain. Compare equivalent periods, check unintended effects and assign ownership for follow-up.

This is a practical starting sequence. A staffing estimate or a neat chart cannot replace observation, process knowledge or a test.

Worked example: an office order process

Fictional teaching scenario. These are not ORDREL customer results.

An office team expects 240 comparable order entries per day. Each accepted entry requires 6 minutes of work. Each person has 8 paid hours, with 75% available for this work after other duties and breaks.

1. Estimate the workload

240 orders × 6 minutes = 1,440 minutes of work.

8 hours × 60 × 75% = 360 productive minutes per person.

1,440 ÷ 360 = 4 people as an arithmetic capacity baseline.

To reproduce this in the staffing calculator, use demand 240, output 10 orders per productive labor hour, 8 paid hours, 75% productive time and 4 people assigned. Capacity is 240 and the calculated staffing gap is zero. Check peaks, skills, minimum coverage and absences separately.

2. Understand a recurring problem

In a separate fictional log of 20 returned forms, 12 have a missing order identifier, 6 have an address issue and 2 have another issue. In the Pareto chart tool, enter counts 12, 6 and 2. The leading category is 60%; the first two together are 90%. This identifies a priority, not the cause.

Use 5 Whys to investigate the missing identifier. “The field is easy to overlook” is a hypothesis. Observe the form, speak with the team and inspect examples before treating it as an explanation.

3. Plan a countermeasure and a test

Suppose the team proposes a validation rule in its order-entry system that blocks submission when the identifier is missing. Document the proposal in the mistake-proofing checklist. Test a valid identifier, an empty value and a value containing only spaces; record the expected and actual behavior. ORDREL documents the plan; the validation rule must be implemented in the team’s own system.

4. Check what changed

For the next comparable period, record total forms, returned forms, return reasons and any new delays. Compare the proportion returned as well as the count. If the change helps without creating another problem, update the work instructions and set a review date. No improvement is assumed until it is measured.

Which Lean tool should I use?

Your question	Start here	Keep in mind
Where does work spend time?	Process mapping and time study / takt time	Working time, waiting time and demand-based pace are different measures.
How much work can this team cover?	Staffing calculator	Use output per person’s productive hour, not a whole line’s rate.
Which category deserves attention?	Pareto chart	Choose one comparable measure: counts, time or cost.
Why might the problem recur?	5 Whys worksheet	Check each causal link against evidence.
How can an error be prevented or detected?	Poka-yoke / error-proofing	A recorded checklist is not an enforced control.
How do we organize and sustain work?	6S self-check and handover board	Assign owners and check whether changes are sustained.
Where is equipment effectiveness lost?	OEE calculator	Use equipment data with consistent time and output units.

Lean, kaizen, PDCA and Lean Six Sigma

Continuous improvement describes the ongoing work of making processes better. Kaizen is commonly used for improvement through involvement and learning. PDCA gives a plan-do-check-act cycle for testing and reviewing changes. Standard work makes an agreed current method explicit so it can be followed and improved.

Lean Six Sigma combines process improvement approaches, often organized through DMAIC: define, measure, analyze, improve and control. ORDREL tools can support parts of that work; they are not a full statistical analysis suite or a certification program. MoreSteam’s toolbox is a useful reference for how methods fit different phases.

5S concerns sorting, setting in order, cleaning, standardizing and sustaining a workplace. ORDREL’s 6S self-check adds safety. Poka-yoke, mistake-proofing and error-proofing describe closely related prevention and detection methods. Use the terminology that explains the actual work.

For a more structured team record, review the contents of the paid A3 template or DMAIC pack. Prices, formats and English-language availability are shown before checkout.

Sources and further reading

See our methods and correction process. The examples and tool-selection suggestions on this page are ORDREL’s teaching material.

Explore all free Lean tools