Insights on Lean, 5S & Operational Excellence

Common foundation: different roads to the same goal

IWS was not created in opposition to Lean; it is rather its evolutionary adaptation, filtered through the experience of the FMCG industry and the Total Productive Maintenance (TPM) methodology developed by the Japan Institute of Plant Maintenance (JIPM).

Both systems rest on a few inviolable pillars:

• Approach to losses: Lean focuses on eliminating the 8 types of waste (Muda), while IWS strives for an absolute state of Zero Loss (zero breakdowns, zero defects, zero accidents, zero speed losses).
• Work standardisation: Standardised work in Lean corresponds in IWS to rigorous Centerline procedures (machine parameterisation) and CIL procedures (Clean, Inspect, Lubricate).
• Solving problems at the source: The use of structured tools aimed at reaching the root cause (5-Why, Ishikawa diagram and A3 reports in Lean; the Problem Solving methodology in IWS).
• The role of Gemba: In both cases the managerial centre of gravity is on the shop floor, with the direct involvement of operators.

Key differences: Automotive vs. FMCG

The biggest divergences stem from process specifics. Lean was born in discrete manufacturing (car assembly), where flow, takt and lead time are key. IWS emerged in the highly automated continuous and high-speed packaging industry (consumer goods), where the reliability of machine parks and the elimination of micro-stops are crucial.

What sets IWS apart? Three unique P&G elements

1. Integrating TPM with HPWS (sociotechnical systems)
While many Lean implementations struggle with a lack of full operator engagement, IWS combines technical requirements (TPM) with organisational ones (High Performance Work Systems) from day one. The premise is unambiguous: 100% of employees must be 100% engaged in eliminating losses. The operator does not merely run the machine – they become its micro-owner (Autonomous Maintenance).

2. A Loss Tree instead of gut feeling
In IWS no improvement project is launched without a hard financial justification. The Loss Tree precisely converts every second of line stoppage, every gram of scrap and every kilowatt-hour into concrete amounts. The IWS pillars respond directly to the largest “branches” of loss in the plant.

3. Codified Daily Management Systems (DMS)
IWS turns Lean concepts into repeatable, daily organisational habits. Every shift runs the same management loops:

• DDS (Daily Direction Setting): A 15-minute team meeting analysing the last 24 hours and setting priorities for the next 24 hours on the basis of hard indicators.
• Centerline (CL): Keeping process variables within strictly defined technological windows, eliminating product variability and micro-stops.
• CIL (Clean, Inspect, Lubricate): A cleaning standard combined with inspection that detects micro-faults before they turn into a breakdown.

Implementation practice: how to build synergy?

Today’s world-class factories rarely choose a pure, uniform doctrine. The most effective strategy combines the philosophy and flow dynamics of Lean Manufacturing with the operational rigour and technical reliability of IWS.

• If the problem is long changeover times, high work-in-process inventory and slow flow, the Lean toolkit (SMED, VSM, Kanban) will deliver the fastest results.
• If the plant struggles with high process variability, frequent machine breakdowns and a lack of execution stability across shifts, the IWS methodology with its TPM pillars and DMS rigour is the first-choice solution.

The synergy of both worlds creates a complete operating system: Lean defines what and why should be improved in the value stream, and IWS provides the execution engine that ensures the achieved parameters are maintained permanently.

The success of implementing both Lean Manufacturing and the Integrated Work System (IWS) depends on efficiently transforming theoretical concepts into lasting habits on the shop floor. Our company is the physical link between strategy and Gemba practice, supplying the right equipment and the tools needed to parameterise and stabilise processes.

In the Lean context, 4Lean solutions – dedicated line equipment, transport carts, Kanban boards and shadow boards (5S) – create the material foundation for smooth operation and the elimination of waste. In an IWS environment, in turn, the company’s offering directly supports the operationalisation of the key Daily Management Systems (DMS): from ergonomic DDS (Daily Direction Setting) briefing boards and Loss Tree visualisation points, through mobile cleaning and inspection (CIL) stations, to standardised Centerline parameter recording boards right at the machines. By supplying durable, flexible components tailored to the specifics of the plant, 4Lean shortens the time needed to implement standards, strengthens visual discipline and makes it easier to build a culture of 100% operator engagement in maintaining the production infrastructure.

Effective problem solving in an industrial and business environment rests on three coherent pillars: hard process engineering (analytical tools), soft human dynamics (psychological safety and communication) and the physical working environment (visual management and workshop space).

1. The hard side: an overview of the tools and how to choose them

Each tool addresses a different stage of the problem – from defining it, through generating ideas, to root-cause analysis and standardisation.

5W1H – a precise description of the problem. Before you start looking for causes, you must describe the problem without guesswork or emotion.

• What? What exactly happened? What is the symptom?
• Where? Where in the process / geographically did the problem occur?
• When? When did the problem appear and how often does it occur?
• Who? Who is affected (role in the process, customer)? We are not looking for a culprit but for the human context.
• Why? Why is it a problem (what impact does it have on the goal / the business)?
• How / How much? How did it happen and what is the scale (cost, number of units, delay)?

Brainstorming — used at the early stage of searching for hypotheses or when devising preventive actions. The main rule: strictly separate the creation phase from the evaluation phase. When to use it: when the problem requires unconventional thinking and the search space for solutions is very wide.

The Phillips method (Phillips 6-2-3) — classic brainstorming often fails in large groups or those dominated by individual personalities. The group (e.g. 12–30 people) is divided into sub-teams of six, which discuss one precisely formulated question for six minutes. The sub-group leader presents the conclusions to the whole forum. When to use it: with large teams where people are reluctant to speak in public, or when the time available to gather perspectives is drastically limited.

The fishbone diagram (Ishikawa) — structures the discussion when the problem is multidimensional. The standard analysis categories (6M):

• Man: skills, fatigue, training, clarity of instructions.
• Machine: technical condition, wear, parameters, tools.
• Material: raw materials, supplier specification, batch variability.
• Method: standards, procedures, sequence of operations.
• Measurement: measurement accuracy, calibration, misleading indicators.
• Milieu / Mother Nature (environment): temperature, humidity, noise, lighting.

5 Why — a simple technique for drilling down the cause-and-effect chain, but one that demands rigour. How it works: keep asking “why?” until you move beyond the symptom and reach a systemic or process gap (usually 4–6 iterations). The trap: asking “why did the person make the mistake?” instead of “why did the process allow the mistake to be made?”.

The A3 report — a tool originating in Lean Management (Toyota Production System) that brings the entire problem-solving path together on a single sheet and guides the team through the full PDCA cycle (Plan-Do-Check-Act): Title/Context → Description of the current state (5W1H) → Goal → Cause analysis (Ishikawa / 5 Why) → Corrective actions → Verification of results → Standardisation. When to use it: for strategic, cross-departmental problems and projects that require management approval.

2. Matching the tool to the type of problem

3. The soft side of the process: people, culture and group dynamics

Even the most polished Ishikawa diagram or A3 report will prove useless if the team is afraid to tell the truth. Hard methods are only the framework – the fuel for effective problem solving is people’s attitudes.

Psychological safety is the belief that no one on the team will be punished, ridiculed or ignored for reporting an error, pointing out a problem or asking a “stupid” question. If the response to an error is to look for someone to blame, people will start hiding symptoms — the 5 Why tool then turns into a “5 × who broke it” interrogation. The leader’s role: openly model the attitude that “a mistake is a free lesson about a weakness in our process — we look for the gap in the procedure, not in the person”.

Separating the people from the problem — the basic principle of mediation and facilitation: be soft on people but hard on the problem. Instead of saying “Operator John didn’t keep an eye on the temperature”, we state the process fact: “The process has no safeguard preventing the machine from starting at a sub-optimal temperature”.

Managing group dynamics and the role of the facilitator — problem-solving sessions need an impartial facilitator who neutralises dominant voices (written methods, silent brainstorming on cards, the Phillips method) and activates introverted creativity by giving quiet experts time to think the problem through individually before the discussion.

Resistance to change and the IKEA effect — a frequent reason why problems come back is that the operational team never implemented the solutions, because they were imposed from above. People care more about solutions they helped to create — involving operators in the analysis phase (e.g. drawing the fishbone together) means that the implementation of preventive actions meets natural acceptance rather than resistance.

4. The physical problem-solving environment: the role of Visual Management and 4Lean Supplies

Even the best-mastered analytical methods and a mature organisational culture need a suitable physical environment to move from theory to effective practice. Problem solving rarely produces lasting results if the analysis takes place chaotically on scraps of paper and the conclusions disappear in a jungle of emails and files on the server. The key glue connecting the team’s work with everyday industrial practice is Visual Management.

Our company supports businesses in turning problem-solving processes into a permanent, intuitive organisational habit by supplying dedicated workshop infrastructure:

• Tailor-made problem-solving boards: boards dedicated to A3 analysis, ready-made templates for the Ishikawa diagram, 5W1H forms and boards for tracking the status of preventive actions bring the analysis right to the place where the problem arises (Gemba).
• Designing and equipping brainstorming rooms (War Room / Obeya): mobile visual walls, large-format magnetic dry-erase boards, ergonomic stainless-steel furniture and workstation organisation accessories create neutral ground where an interdisciplinary team can step out of the routine and focus on finding root causes.

5. An integrated implementation path: from theory to practice

1. Build a safe atmosphere: open the meeting by defining the goal as a joint fight against the defect/challenge, not as an assessment of employee performance.
2. Establish the facts on the board (5W1H): gather the team at a visual board directly on the shop floor or in a dedicated brainstorming room.
3. Match the analysis tool to the scale of the problem: carry out the cause analysis (Ishikawa / 5 Why / Phillips 66) depending on the complexity and the size of the group.
4. Involve the team in creating solutions: let line employees co-create the corrective actions.
5. Document and track progress in the A3 report: put the agreed actions on the visual management board with clear responsibilities and deadlines.
6. Close the process with standardisation: once effectiveness has been verified, thank the team for their commitment and write the new standard into the procedures.

Why is employee engagement so often hard to achieve, and how does the physical workstation infrastructure support building a Kaizen culture?

The main challenges on the road to team engagement

A lack of active employee participation in improvement processes is rarely down to ill will. Most often it is the consequence of organisational barriers and the absence of suitable tools:

1. The “black hole” of ideas (no feedback): if an employee submits an improvement and no response appears for weeks, their motivation immediately drops to zero. Suggestion systems die not from a lack of ideas but from a lack of transparent tracking of their status.
2. Abstract indicators detached from daily reality: tables in ERP systems and reports sent by email are invisible to production employees. Without direct insight into goals and current results, the team does not feel a sense of agency.
3. No clear system for reporting problems: a problem noticed on the production line is often “swept under the carpet” or passed on verbally, and so gets lost in the rush of daily duties.
4. No dedicated place for analysing problems: organising Kaizen workshops or quick line-side briefings in a noisy or cramped environment reduces the effectiveness of teamwork.

Visual tools as the foundation of engagement

Engagement grows when communication is simple, physical and immediate. Visualising processes on the shop floor lets every employee see the impact of their work on the whole company.

This is precisely where we offer our key support. Acting as an industrial concierge and purchasing integrator (Tail Spend), 4Lean Supplies designs and delivers dedicated solutions for a range of industries that turn declarations about continuous improvement into daily habits.

How 4Lean Supplies supports implementations in practice

• Employee suggestion systems (Kaizen boards): visual suggestion boards and idea boxes make it easy to submit improvement initiatives. Thanks to clear sections (Submitted, In Progress, Implemented), the whole team can see what is happening with their ideas, which builds a sense of agency and recognition.
• TAG boards (tagging boards): a visual system for managing faults and identifying problems. Red or yellow tags hung on a machine or board make it possible to immediately mark the location of a breakdown, a missing element or a safety hazard, and to assign responsibility for solving the problem.
• Daily Management boards (daily shift management): the centre of the daily, few-minute briefings of production teams, allowing continuous monitoring of SQCDP indicators (Safety, Quality, Cost, Delivery, People), analysis of deviations from the standard and immediate planning of corrective actions with the participation of operators.
• Brainstorming rooms & KAIZEN rooms: creating dedicated, ergonomically equipped workshop spaces — mobile boards, modular tables and fittings that turn an ordinary room into a professional problem-analysis zone (e.g. using 5 Why or Ishikawa methods).

The industrial concierge – completeness instead of purchasing chaos

Creating an engaging working environment requires solutions tailored to the specifics of the plant — from the dimensions of the boards to the materials used, which must withstand harsh industrial conditions.

The role of 4Lean Supplies is to relieve managers and purchasing departments of the burden of searching for separate suppliers of furniture, dry-erase boards, marking elements and 5S accessories. Integrating these processes in one place guarantees visual consistency, high build quality and ergonomics that translate directly into employees’ willingness to use the tools.

When Lean tools are durable, attractive and always at hand, continuous improvement stops being an obligation and becomes a natural element of the organisational culture.

The hardest stage is not hanging a new board or sticking lines on the floor, but building a lasting habit and creating an environment that naturally supports discipline.

The biggest barriers on the road to a standardised workstation

Operations managers, production managers and continuous-improvement engineers encounter recurring difficulties when implementing standards:

• Makeshift solutions and low-quality equipment: using non-durable materials, generic catalogue furniture that does not match the specifics of the process, or tapes that peel off after a few weeks means the implementation quickly loses its appearance and functionality. Employees stop respecting a standard that looks temporary.
• Lack of ergonomics and individual fit: off-the-shelf solutions rarely match the requirements of a specific part or the operator’s sequence of movements perfectly. If reaching for a tool requires unnecessary effort or searching for substitutes, the standard withers away.
• Administrative cost and supplier fragmentation (Tail Spend): ordering dedicated drawer foams from one supplier, shadow boards from another and specialised stainless-steel industrial furniture from a third generates an enormous burden for the purchasing department.
• Difficulty sustaining the standard (Sustain): the last step of the 5S methodology is the hardest. Without suitable, intuitive visual tools, the workstation very quickly returns to its original state.

4Lean Supplies as an industrial concierge – comprehensive implementation support

Instead of imposing template products from a mass catalogue, 4Lean Supplies operates in the industrial concierge model. This means taking over the entire effort involved in physically designing and delivering workstation infrastructure perfectly tailored to the specifics of a given plant.

How does 4Lean Supplies’ support make the standardisation process easier?

• Dedicated stainless-steel furniture and constructions: durable, welded industrial furniture adapted to the specific production process, material pick-up points or cleanliness requirements. Ergonomically matched dimensions eliminate unnecessary operator movement.
• Personalised Visual Management and shadow boards: designing and producing shadow boards and matching drawer foams (shadow boards and foam inserts) makes putting a tool back in the right place an intuitive reflex, and the absence of any element is visible in a fraction of a second.
• Durable space marking: supplying professional floor markings, markers and 5S accessories that stand the test of time and heavy forklift traffic.
• Integration of low-value purchases (Tail Spend): instead of involving the purchasing department in contact with dozens of suppliers of small improvement items, 4Lean Supplies integrates the whole process — one partner is responsible for fitting and delivering the complete workstation equipment.

A standard that defends itself

Effective standardisation is not about forcing employees to follow impractical procedures. It is about giving them a workstation so well thought out, durable and comfortable that working any other way simply becomes inefficient.

Thanks to their partnership with 4Lean Supplies, manufacturing and logistics companies shorten the time needed to implement standards, reduce the operational burden on purchasing departments and gain workstations that retain their functionality for years.

The answer to these challenges is to move the learning process out of the active production area and to create dedicated training zones (of the DOJO type) and interactive Cognitive Rooms.

Practice in a safe environment: sensor adjustment stations

One of the most frequent causes of unplanned downtime and false rejects on modern lines is the incorrect calibration and adjustment of sensors (inductive, optical, capacitive or vision). A slight shift of the target or the wrong detector sensitivity can bring the whole process to a halt.

Dedicated training stations for sensor adjustment allow employees to understand the physics of automation components under controlled conditions:

• Fast diagnosis and setting: operators and technicians learn to precisely set detection zones and hysteresis and to correctly position elements relative to the sensor.
• Fault simulation: instructors can deliberately introduce disturbances (e.g. dirty optics, miscalibration), teaching employees to quickly remove root causes without the time pressure of a running line.
• Safety and repeatability: practising manual habits on trainers reduces the risk of damaging delicate tooling on the shop floor.

Cognitive Rooms: a “museum of knowledge” and of the company’s strategy

Mastering manual activities is only half the battle. For employees to become true ambassadors of continuous improvement, they must understand why they perform given activities and how their daily work fits into the company’s long-term strategy.

The solution to this challenge is Cognitive Rooms — spaces designed along the lines of a modern, interactive museum of technology:

• Process exhibits and Quality Corners: presenting physical cross-sections of products, correct components and defect samples (defect catalogues). An employee can touch the part, examine the structure of the damage and understand the consequences of letting an error through to the next stage.
• Timeline and evolution of the standard: an interactive presentation of the history of a given process — from past problems, through implemented Kaizen improvements, to the current standard.
• Linking the workstation to strategy: visual value stream maps (VSM), KPIs and the company’s strategic goals presented in an accessible, graphic form. The employee learns how a correctly set sensor at their workstation affects the delivery of the annual financial plan or the OEE of the whole plant.

4Lean Supplies – an industrial concierge for building educational zones

Creating an ergonomic training zone or Cognitive Room requires combining knowledge of process engineering, industrial space architecture and Visual Management. Acting as an industrial concierge, we provide comprehensive support to companies in designing and realising such spaces:

• Dedicated trainers and stations: designing from scratch and manufacturing training stations made of stainless steel or aluminium profiles, tailored to the customer’s specific parts and devices (e.g. modules for learning sensor adjustment, pneumatic gun zones, assembly stations).
• Equipping Cognitive Rooms: supplying professional display cases, visual boards, stands for quality reference samples and attractive built-in systems that give cognitive zones a modern, professional character.
• Purchasing integration (Tail Spend): instead of ordering boards, holders, trainers and lighting elements separately from many parties, 4Lean Supplies takes on all the logistics and execution, guaranteeing visual consistency and maximum durability.

Summary

Investing in modern training zones and Cognitive Rooms is a step from traditional, passive instruction towards actively building engineering awareness. When an employee has the opportunity to safely practise difficult adjustments and to understand the wider context of their work, not only do production quality and efficiency grow, but above all engagement and a sense of responsibility for the company’s success.