4. Workplace Stability, 5S and Standardized Work

Introduction and Context

Lean management seeks to create value with fewer resources by removing activities that do not contribute to customer value. However, waste cannot be removed reliably when the workplace itself is unstable. Unclear methods, missing materials, disorganized tools, inconsistent work sequences, excessive variation, poor ergonomics and delayed responses to abnormalities make improvement temporary. Workplace stability is therefore a foundation for flow, quality at source, just-in-time production and continuous improvement.

Workplace stability does not mean that nothing changes. It means that the essential conditions for performing work are controlled sufficiently to make abnormal conditions visible and improvement measurable. A stable workplace has defined methods, available resources, predictable equipment performance, appropriate staffing, clear visual signals and rapid escalation when conditions depart from the expected state.

This chapter examines the connected practices used to establish such stability: 5S, visual management, standardized work, work combination tables, cycle-time analysis, ergonomics and daily management controls. These practices are often introduced as simple housekeeping or documentation techniques. At an advanced level, however, they are management systems. They convert tacit knowledge into shared operating discipline, expose deviations and create a factual basis for problem solving.

Learning Objectives

After studying this chapter, the learner should be able to:

1. Explain workplace stability and its relationship to lean flow and quality.

2. Distinguish the five elements of 5S and evaluate their implementation.

3. Design visual management systems that make normal and abnormal conditions immediately apparent.

4. Develop standardized work using takt time, work sequence and standard work-in-process.

5. Use cycle-time analysis and work combination tables to identify imbalance and improvement opportunities.

6. Integrate ergonomics into lean process design without treating productivity and employee well-being as conflicting goals.

7. Establish daily management controls, escalation routines and audit systems.

8. Evaluate the managerial, technological and ethical risks associated with workplace-stability initiatives.

Workplace Stability as a Lean Operating Condition

A process is stable when it can repeatedly produce the intended output under reasonably consistent conditions. Stability concerns more than output volume. It includes safety, quality, delivery, cost, equipment availability, material replenishment and the capability of people to perform work without avoidable strain.

A useful distinction is between common-cause variation and special-cause variation. Common-cause variation is inherent in the current system, such as a poorly designed layout or an inherently long setup. Special-cause variation results from an unusual event, such as a broken tool, incorrect material or absent operator. Standardized work helps reveal both forms, but they require different responses. Special causes should be contained and corrected; common causes require process improvement.

Stability is also multidimensional. A line may meet its daily quantity target while producing excessive defects, relying on overtime or exposing employees to unsafe postures. Such a line is not genuinely stable. Lean management therefore requires balanced attention to safety, quality, delivery, cost and morale. A narrow focus on labor productivity can conceal system-level waste and undermine improvement.

The relationship between stability and flow is cumulative. If materials are not consistently available, operators create buffers. If work methods vary, output becomes unpredictable. If equipment failures are frequent, schedules become unreliable. Buffers and expediting may temporarily protect delivery, but they also hide the causes of instability. 5S and standardized work reduce this concealment by making the intended condition visible and deviations easier to detect.

5S: From Workplace Order to Operating Discipline

5S is a structured approach to organizing, cleaning and controlling the workplace. The five Japanese terms are commonly translated as seiri (sort), seiton (set in order), seiso (shine), seiketsu (standardize) and shitsuke (sustain). The method is not merely a cleanliness campaign. Its purpose is to create a workplace in which the right item, information or condition can be identified and used at the right time.

Sort: Remove What Is Not Needed

Sorting separates necessary items from unnecessary items. Unused tools, obsolete documents, excess material, broken fixtures and unidentified containers occupy space and create uncertainty. A practical approach is to identify questionable items and place them in a controlled red-tag area. The item is then assigned a disposition: use, relocate, repair, return, recycle or dispose.

Sorting must be based on actual need rather than personal attachment. A tool used once a year may be necessary, but it should not occupy prime point-of-use space. Conversely, an item used every cycle should be immediately accessible. The decision should consider frequency of use, risk, replenishment time and operational consequences.

Set in Order: Make Location and Quantity Obvious

Setting in order determines where necessary items belong and how their presence is recognized. Shadow boards, floor markings, labeled locations, point-of-use storage, minimum–maximum levels and color coding can reduce searching and unnecessary motion. The aim is not visual decoration; it is immediate recognition of normality and abnormality.

An effective arrangement follows the sequence of work and minimizes reaching, walking and awkward handling. Storage locations should reflect actual use, not an abstract desire for symmetry. Labels must remain understandable to all relevant users, including temporary employees and maintenance personnel.

Shine: Inspect Through Cleaning

Shine involves cleaning the workplace and inspecting equipment while cleaning. Oil leaks, loose fasteners, damaged guards, abnormal noise and deteriorating cables may become visible during routine cleaning. Thus, shine is a form of preventive inspection rather than cosmetic housekeeping.

Cleaning standards should identify what is cleaned, by whom, how often, with which method and what abnormalities require escalation. Where possible, the source of contamination should be eliminated. Repeatedly cleaning the same leak without addressing its cause does not represent improvement.

Standardize: Preserve the Desired Condition

Standardization establishes common methods for maintaining the first three S practices. It may include photographs of the correct condition, checklists, replenishment rules, cleaning standards and responsibility matrices. Standards should be concise and located where the work occurs.

A standard that cannot be understood or followed in actual operating conditions is ineffective. Standards should therefore be developed with the people who perform the work and tested during normal and abnormal situations.

Sustain: Make 5S Part of Management Practice

Sustain means maintaining and improving the established condition through leadership, training, routines and feedback. Audits alone do not sustain 5S. If supervisors inspect only before formal audits, employees learn that the standard is temporary. Sustaining mechanisms include layered audits, routine confirmation, rapid correction of abnormalities and recognition of useful suggestions.

The most common failure is treating 5S as a one-time clean-up event. A workplace can look orderly immediately after an event yet return to disorder because ownership, replenishment and escalation have not been defined. Sustainable 5S is embedded in the operating system rather than assigned as an additional campaign.

Visual Management and the Visibility of Abnormality

Visual management enables people to understand the condition of a process without relying on lengthy verbal explanations. It uses signals, displays, markings, labels, status boards, response lights, production-control charts and standard photographs. The essential test is whether a deviation from the expected condition can be detected quickly and whether the next response is clear.

Visual controls can be classified into several broad types. Instructional controls show how to perform a task. Identification controls show the name, location or status of an item. Quantitative controls show expected quantities, replenishment levels or production targets. Diagnostic controls display process performance or abnormality. Restriction controls prevent incorrect action, as in physical interlocks or keyed connections.

A visual board that displays a target but does not show current performance, deviation, owner and response is incomplete. Effective visual management links information to action. For example, an hourly production board may show the planned quantity, actual quantity, reason for any gap, person responsible for response and escalation status.

Visual management can also create unintended behavior. Excessive displays may produce information overload. Red–green indicators may hide significant variation if thresholds are poorly chosen. Ranking teams publicly may encourage concealment of problems. Visual controls must therefore be designed as learning and response mechanisms, not instruments of blame.

Standardized Work: The Current Best Known Method

Standardized work is the documented and observed method for performing a task safely, consistently and efficiently under defined conditions. It is not a rigid claim that no improvement is possible. It represents the best known method at a particular time and provides a baseline against which improvement can be evaluated.

Three elements are central:

• Takt time: the rate at which a product or service must be completed to meet customer demand, calculated as available production time divided by required customer quantity.
• Work sequence: the order in which tasks are performed to achieve the required result safely and correctly.
• Standard work-in-process: the minimum quantity of material or work required to keep the process operating in the defined sequence, including items in machines where relevant.

Suppose a process has 420 available minutes in a shift and customer demand is 140 units. Takt time is 3 minutes per unit. If the observed work content is 8.7 minutes, the theoretical minimum number of operators is 8.7 divided by 3, or 2.9, which means at least three operators are required before considering imbalance, breaks, skill restrictions or variation. This calculation is a starting point, not a staffing decision by itself.

Standardized work should specify critical quality points, safety requirements, tools, material presentation and reaction methods for abnormalities. It should be understandable at the point of use and verified through observation. Documentation without observation often describes an ideal process rather than the process actually performed.

Standardized work differs from a work instruction. A work instruction may explain how to complete a particular operation. Standardized work additionally connects the operation to takt time, sequence, work-in-process and the broader flow of the process. It therefore supports line balancing and management of the whole work system.

Cycle-Time Analysis and Work Combination Tables

Cycle time is the elapsed time between the completion of successive units or the time required to complete a defined work cycle. Its meaning depends on the boundary used. A machine cycle, operator cycle and customer-facing process cycle may differ. Analysts must define start and end points clearly before comparing times.

A cycle-time study should distinguish manual time, machine time, walking time, waiting time and other relevant categories. Video observation, direct timing, equipment data and operator interviews can all contribute, but the analyst should avoid timing only the best-performing cycle. A representative sample should include normal variation, product mix and necessary replenishment activities.

A work combination table shows how manual work, machine work and walking or waiting are combined over a cycle. Time is often represented on a common axis so that overlapping activities become visible. For example, an operator may load a machine for 20 seconds, wait through a 50-second automatic cycle, unload it in 10 seconds and walk 15 seconds to obtain material. The table can reveal whether walking occurs during machine time, whether the operator is overloaded or whether an opportunity exists to combine tasks.

The difference between cycle time and takt time is crucial. If cycle time exceeds takt time, the process cannot meet demand at the current design. If cycle time is substantially below takt time, capacity may be available, but the result may also indicate overstaffing, unnecessary processing or an inaccurate demand assumption. A process with average cycle time below takt can still fail if variation is high. Thus, averages should be supplemented with distributions, run charts and observations of the longest and shortest cycles.

Line balancing assigns work elements among operators or stations so that total work is aligned with takt time while respecting precedence, skill, equipment and ergonomic constraints. The theoretical balance efficiency can be expressed as:

Balance efficiency = Total work content ÷ (Number of stations × Takt time) × 100

This metric is useful diagnostically, but it should not become the sole objective. A mathematically balanced line may be unsafe, fragile or difficult to manage. A small amount of capacity protection may be justified where demand or process times fluctuate.

Ergonomics as a Stability Requirement

Ergonomics is the design of work to fit human capabilities and limitations. It includes posture, force, repetition, reach distance, visual demands, vibration, environmental conditions, cognitive load and the interaction between people and equipment.

Poor ergonomics creates injury risk, fatigue, slower work, defects and absenteeism. It also creates hidden variation: an operator who works faster early in a shift may slow later because the task is physically demanding. Ergonomic improvement is therefore both a human responsibility and a process-stability intervention.

Assessment should consider the complete work cycle rather than a single photograph. Relevant questions include: Can the operator maintain a neutral posture? Is force applied at a safe frequency? Are heavy items stored between appropriate heights? Can both hands work without unnecessary crossing? Are displays readable without excessive neck movement? Does the method remain safe during replenishment, cleaning and minor interruptions?

Common improvements include raising or tilting work surfaces, reducing reach distance, using gravity-feed racks, introducing lift assists, repositioning tools, reducing container size, improving lighting and varying tasks where appropriate. Job rotation should not be used to distribute exposure to a harmful task without reducing the hazard itself.

Ergonomic design must involve employees. Workers possess practical knowledge about discomfort, near misses and workarounds that may not be visible in formal data. Their involvement also helps distinguish a genuine improvement from a control that merely transfers effort to another body part or another process.

Daily Management and Control of the Operating System

Daily management translates lean principles into short-interval operating routines. It connects the workplace to organizational objectives through visual performance measures, structured meetings, standard confirmation and escalation.

A daily management system typically includes a small set of measures covering safety, quality, delivery, cost and people. Measures should be timely enough to support action. A monthly defect rate is useful for trend analysis but cannot guide an hourly response. A daily board may include incidents and near misses, first-pass yield, schedule attainment, downtime, attendance, suggestions and open countermeasures.

The meeting should occur at the workplace or near a visual board, follow a defined agenda and focus on abnormalities rather than lengthy reporting. A useful sequence is: confirm safety, review actual versus standard, identify gaps, assign immediate containment, determine escalation and track unresolved causes. The meeting is not a substitute for investigation; it is a mechanism for ensuring that problems are seen and owned.

Leader standard work defines the recurring actions expected from supervisors and managers. These may include gemba observation, review of standard work, verification of abnormality response, coaching, safety checks and follow-up of countermeasures. Without leader standard work, daily management often deteriorates into a performance-reporting ritual.

Escalation rules should define when and how support is requested. An andon signal, for example, is valuable only when a signal receives a timely and proportionate response. If employees are criticized for stopping a process, the organization teaches them to hide problems. Psychological safety is therefore an operational condition: people must be able to report abnormalities without fear of retaliation.

An Integrated Implementation Approach

The practices in this chapter reinforce one another and should not be implemented as isolated projects. A practical sequence begins with defining the process purpose, customer requirement and safety boundaries. The team then observes the current condition, identifies instability and establishes an initial 5S condition. After tools, materials and information are organized, the team can measure cycle time, calculate takt and document the actual work sequence.

The next stage is to compare demand with capacity and identify imbalance, waiting, excess movement and ergonomic exposure. Work combination tables and process observations support redesign. Revised methods are tested with operators, then documented as standardized work. Visual controls communicate the expected condition and expose deviations. Daily management tracks whether the new condition is being maintained and whether results improve.

Improvement should follow a learning cycle: observe, define the gap, contain immediate risk, analyze causes, test a countermeasure, update the standard and monitor performance. When a countermeasure changes the method, the standard must change with it. Otherwise employees receive conflicting signals and the old method gradually returns.

Illustrative Case: Stabilizing a Medical-Device Assembly Cell

Background

The following is an illustrative case based on common manufacturing conditions. A medical-device assembler produces a family of single-use kits. The cell contains four operators, two heat-sealing machines and a final inspection station. Customer demand requires 360 kits during a 450-minute shift, giving a takt time of 1.25 minutes per kit.

Situation and Problem

The cell regularly met its daily quantity, but it experienced late shipments, rework and frequent operator complaints of shoulder fatigue. Components were stored in mixed cartons behind the operators. Operators used different sequences for kit preparation, and the final inspector often waited for completed batches and then faced a surge of work. Supervisors responded by adding overtime and moving employees between stations.

Analysis

A 5S assessment found obsolete fixtures, unmarked locations and no defined replenishment quantity. Direct observation showed that operators walked an average of several steps for each kit to obtain components. Cycle-time measurements varied substantially because some operators prepared components in batches while others followed a one-piece flow. A work combination table showed that one machine’s automatic sealing time was being used for productive preparation, but the operator still made unnecessary trips to retrieve labels.

The documented work instruction did not specify sequence, standard work-in-process or a reaction to seal-temperature alarms. This meant that employees solved abnormalities differently. Ergonomic observation identified repeated extended reaches and a storage box positioned below knee height.

Approach and Solution

The team first sorted the area and removed obsolete fixtures. Point-of-use racks were installed in the order of use, with defined minimum and maximum quantities. A small supermarket replenishment route was introduced, using labeled containers and a two-bin signal. The team then developed a standard sequence that combined component preparation with machine automatic time.

The cell was rebalanced using the 1.25-minute takt requirement. Rather than assigning work solely according to average time, the team considered the longest normal cycle, replenishment, inspection demands and operator fatigue. A revised work combination table showed that labels could be presented at the station and that one operator could support both sealing machines without unsafe rushing.

Visual standards displayed the correct rack condition, machine status and response to seal-temperature abnormalities. A daily board recorded first-pass yield, schedule attainment, downtime, ergonomic concerns and open actions. Supervisors began short leader-standard-work observations at different times of the shift.

Outcome

The cell achieved more predictable hourly output, reduced searching and walking, and experienced fewer inspection surges. Operators reported improved reach conditions and greater clarity about abnormality response. The most important result was not the appearance of the cell but the creation of a shared operating method that made deviations visible. The team continued to review the standard when product mix or equipment conditions changed.

Learning Points

The case demonstrates that 5S alone would not have solved the problem. Organization created the conditions for measurement; measurement exposed imbalance; standardized work clarified the method; ergonomic redesign reduced human variation; and daily management sustained the gains. It also shows why quantity results should be interpreted together with quality, safety and employee experience.

Challenges, Risks and Common Mistakes

A major mistake is confusing compliance with improvement. Teams may achieve high audit scores while continuing to experience defects, excessive movement or unsafe work. Audits should therefore verify whether the control serves its purpose, not merely whether a label exists.

Another risk is imposing standards from outside the workplace. A method designed without operator participation may be impractical, encourage workarounds or ignore skill and safety requirements. Standardization should reduce variation in the process, not suppress professional judgment where judgment is genuinely required.

Overemphasis on speed can produce unsafe shortcuts. Takt time is a demand rhythm, not permission to exceed human or equipment limits. Similarly, line balancing should not force every station to operate at maximum utilization. Some protective capacity may be necessary for variation, maintenance and learning.

Poor measurement is another limitation. Inconsistent timing boundaries, small samples, selective observation and averages that hide variation can lead to incorrect conclusions. Data should be triangulated with direct observation and employee knowledge.

5S can also become punitive when red-tagging or audit results are used to assign blame. Such treatment encourages concealment. The objective is to improve the system and make problems discussable. Governance requires clear ownership, transparent criteria, fair escalation and protection for good-faith reporting.

Technology and Emerging Practice

Digital tools can strengthen workplace stability when they support, rather than replace, direct observation. Electronic standard work can provide version control, multilingual instructions, images, short videos and confirmation of critical steps. Andon applications can record response time and recurring abnormalities. Sensors may monitor machine condition, temperature, torque or replenishment levels.

Analytics can reveal cycle-time distributions, micro-stoppages and relationships between environmental conditions and defects. Computer vision may support detection of missing components or incorrect orientation. Artificial intelligence can assist in identifying patterns in abnormality data, but its recommendations require human validation, especially where safety or regulated product quality is involved.

Digitalization also introduces risks. Excessive data collection can create surveillance concerns and undermine trust. Automated alerts may produce alarm fatigue. Poorly governed systems can display obsolete standards or make decisions based on biased or incomplete data. Access control, version management, cybersecurity, data integrity and retention requirements are essential in regulated or safety-critical environments.

Emerging practice is moving toward connected daily management, where equipment data, quality records, digital standard work and escalation systems are integrated. The central principle remains unchanged: technology should make the expected condition clearer, shorten response time and support learning. It should not be used to avoid understanding the physical work.

Best-Practice Principles

Effective workplace stability generally follows these principles:

• Establish safety and quality boundaries before pursuing speed.
• Design standards with the people who perform the work.
• Make normal and abnormal conditions visible at the point of use.
• Measure complete cycles and distinguish averages from variation.
• Use takt time for demand alignment, not as a justification for unsafe pace.
• Treat ergonomics as a process-capability requirement.
• Link every visual signal to a defined response and owner.
• Update standards whenever a verified improvement changes the method.
• Use daily management to solve problems, not merely to report results.
• Judge success through balanced outcomes in safety, quality, delivery, cost and employee well-being.

Chapter Summary

Workplace stability provides the conditions in which lean flow and continuous improvement can succeed. It is created through controlled methods, reliable resources, visible abnormalities, capable equipment, appropriate staffing and safe human performance. 5S organizes the workplace through sorting, setting in order, shining, standardizing and sustaining, while visual management makes expected conditions and deviations understandable.

Standardized work defines the current best known method through takt time, work sequence and standard work-in-process. Cycle-time analysis and work combination tables reveal imbalance, waiting, walking and opportunities to combine manual and machine work. Ergonomics ensures that the method is compatible with human capability and that productivity is not achieved through harmful exposure. Daily management connects standards and performance to leadership routines, escalation and problem solving.

These practices are most effective as an integrated system. Their purpose is not superficial order or employee surveillance, but reliable processes, rapid detection of abnormalities, safer work and a factual basis for improvement. Digital tools can extend these capabilities when governed responsibly and kept subordinate to sound process understanding.

Key Terms

Workplace stability: The condition in which safety, quality, delivery, cost and operating methods are sufficiently predictable to support flow and improvement.

5S: A workplace-organization method comprising sort, set in order, shine, standardize and sustain.

Sort: Separating necessary items from unnecessary items and determining the disposition of the latter.

Set in order: Arranging needed items so that location, quantity and status are readily apparent.

Shine: Cleaning and inspecting the workplace and equipment to expose abnormalities.

Standardize: Establishing common methods for maintaining the desired workplace condition.

Sustain: Reinforcing standards through routines, leadership, training and continuous improvement.

Visual management: Use of visual signals and displays to communicate process condition, standards and required responses.

Standardized work: The documented and observed current best method for performing work under defined conditions.

Takt time: Available production time divided by customer demand; the required rate of output.

Work sequence: The defined order in which tasks are performed to produce the required result.

Standard work-in-process: The minimum material or work quantity needed to operate according to the defined sequence.

Cycle time: The elapsed time required to complete a defined work cycle or produce successive units.

Work combination table: A representation of manual, machine and walking or waiting time across a work cycle.

Line balancing: Distributing work elements among stations to align capacity with takt while respecting constraints.

Ergonomics: Designing work, tools and environments to fit human capabilities and limitations.

Daily management: Short-interval routines for reviewing performance, identifying abnormalities and assigning responses.

Leader standard work: Defined recurring leadership activities that sustain standards and support problem solving.

Andon: A visual or electronic signal indicating process status or an abnormal condition requiring attention.

Common-cause variation: Variation produced by the normal design or operation of a system.

Review Questions

Short Answer Questions

1. What is meant by workplace stability in a lean operating system?

2. Explain the difference between sorting and setting in order in 5S.

3. Identify the three elements of standardized work.

4. Why should cycle-time analysis distinguish manual time from machine time?

5. What is the purpose of leader standard work?

Long Answer Questions

1. Explain how the five elements of 5S contribute to the detection and prevention of process abnormalities.

2. Discuss the relationship among takt time, work sequence and standard work-in-process.

3. Describe how a work combination table can support line balancing and waste reduction.

4. Explain why ergonomics should be treated as a requirement for process stability rather than as a separate health initiative.

5. Discuss the design features of an effective daily management system.

Analytical / Application Questions

1. A process has 390 available minutes per shift and demand for 130 units. Three operators perform 3.8, 4.2 and 5.1 minutes of work respectively per unit. Calculate takt time, identify the immediate capacity issue and recommend what additional information should be collected before changing staffing.

2. An assembly area has high 5S audit scores but continues to experience missing components and frequent operator walking. Diagnose why the audit system may be ineffective and propose a revised visual-management and replenishment approach.

3. A supervisor proposes reducing cycle time by increasing the pace of a repetitive lifting task. Evaluate the proposal using lean, ergonomic and ethical criteria, and recommend a more appropriate improvement process.

22. Multiple Choice Questions with Answers

Question 1

Which condition best demonstrates genuine workplace stability?

A. The area looks clean immediately before an audit

B. The process meets quantity targets through overtime and expediting

C. The expected method, abnormalities and response responsibilities are consistently visible

D. Operators rely on personal experience to compensate for missing materials

Correct Answer: C. The expected method, abnormalities and response responsibilities are consistently visible

Question 2

The primary purpose of the sort step in 5S is to:

A. Arrange all items symmetrically

B. Remove or disposition items that are not needed for current work

C. Increase cleaning frequency

D. Create a performance ranking among operators

Correct Answer: B. Remove or disposition items that are not needed for current work

Question 3

A process has 420 available minutes and demand for 140 units. What is its takt time?

A. 2 minutes per unit

B. 3 minutes per unit

C. 4 minutes per unit

D. 5 minutes per unit

Correct Answer: B. 3 minutes per unit

Question 4

Which combination correctly identifies the three central elements of standardized work?

A. Quality rate, labor cost and inventory level

B. Takt time, work sequence and standard work-in-process

C. Machine speed, inspection frequency and overtime

D. Sort, shine and sustain

Correct Answer: B. Takt time, work sequence and standard work-in-process

Question 5

What is the main analytical value of a work combination table?

A. It replaces the need to observe employees

B. It shows how manual, machine and walking or waiting time interact during a cycle

C. It calculates customer satisfaction directly

D. It determines the annual training budget

Correct Answer: B. It shows how manual, machine and walking or waiting time interact during a cycle

Question 6

A line has an average cycle time below takt time but frequently misses hourly targets. Which explanation is most plausible?

A. Average cycle time always guarantees capacity

B. Variation or interruptions may be causing actual performance to exceed takt at critical times

C. The line must have excessive standard work-in-process

D. Takt time is unrelated to customer demand

Correct Answer: B. Variation or interruptions may be causing actual performance to exceed takt at critical times

Question 7

Which ergonomic response is most appropriate for repeated extended reaching?

A. Rotate employees without changing the workstation

B. Increase the required work pace

C. Move materials to a point-of-use location within a safer reach zone

D. Record the problem only during the annual audit

Correct Answer: C. Move materials to a point-of-use location within a safer reach zone

Question 8

An andon signal is least effective when:

A. The signal is visible at the point of work

B. Escalation thresholds are defined

C. The response owner and expected response time are unclear

D. The signal records recurring abnormalities

Correct Answer: C. The response owner and expected response time are unclear

Question 9

Why should standardized work be updated after a verified process improvement?

A. To preserve the old method for comparison

B. To ensure the documented method reflects the new current best practice

C. To eliminate the need for operator involvement

D. To prevent further improvement permanently

Correct Answer: B. To ensure the documented method reflects the new current best practice

Question 10

Which is an important governance risk in digital workplace management?

A. Using images in standard work

B. Version control of instructions

C. Collecting employee data without clear purpose, safeguards or trust

D. Recording machine abnormalities for analysis

Correct Answer: C. Collecting employee data without clear purpose, safeguards or trust