The document presents a model of a Lean Operations Management System (LOMS) intended to address the missing link between using Lean tools and achieving a sustainable, continuously improving organization. The proposed LOMS model is based on an extensive literature review of Lean Manufacturing, operations management, and performance management systems. It aims to define an operations management system adapted for daily shop floor control and animation that enhances Lean leadership and culture. The model incorporates five key elements: customer satisfaction, internal processes performance, problem solving and learning, continuous improvement, and Genchi Genbutsu (going to see the actual situation firsthand). The goal of the LOMS model is to provide managers with a useful daily agenda for monitoring and measuring operations performance to help organizations fully
2. A Model of Lean Operations Management System: The Response To The Missing Link
Between Lean Toolbox and A Sustainable Continuously Improving Organization
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often regarded as the most important strategy for manufacturing firms desiring to
achieve world-class performance [9], [20], [37]. However, while the advantages of
LM are recognized how to go about achieving it has received less attention in the
operations management (OM) literature. Especially, as a fully integrated management
and manufacturing philosophy and approach [4], the LM adoption entails significant
organizational change which requires companies to properly manage the key factors
that might influence on the success of the adoption process [1], [25], [27], [28], [31].
As research among organizations achieving world-class performance shows that LM
effectiveness requires an OM system based on measuring performance [6], daily
direct shop floor contact, integration of employees in problem solving teams, and
support for continuous improvement, then the need for a supportive processes and
OM system coherent with LM requirements is forced and imposed.
Thus, the purpose of this paper is to contribute towards the clarifying vision of
LM as an ultimate daily OM system. Especially, this contribution aims to define an
OM system LOMS (Lean Operations Management System) to be adapted as a daily
shop floor animation system.
In the following section, LM literature and related theory are briefly reviewed;
then a review of OM systems related to LM and their analysis by structural typology
is performed; this is then followed by the presentation of the model. The practical
nature of the model is then showed, followed by an examination of each model
element. Finally, the first applications of the model are showed in the conclusions that
complete the article.
2. LITERATURE REVIEW
2.1. Lean Manufacturing
LM is an integrated and interdependent system involving many elements: the tools,
the philosophy and management [29]. The LM system consists of multiple bundles of
routines in production, quality management, and human resource management [33].
Referring to the Toyota production system (TPS), LM encourages processes and
operations’ control, predictability, planning, and risk minimization through both
symbolic leadership and a global OM system that emphasizes standardized global
operating procedures and control systems [38]. However, despite a wide consensus
that LM success implies a radical change in how the company manages its operations,
few studies have focused on modeling LM as an ultimate OM system. Unfortunately,
the non-development of specific OM system in line with LM tools deployment is one
reason why [27] estimates that 90% of companies failed to recognize measurable
improvement in performance except Toyota and his little group of suppliers.
Inevitably, LM adoption implies integration in the use of operations and human
resource management practices [12]. Thus, if many firms failed to achieve expected
benefits from their LM implementation because of the associated OM system is not
well adapted and most often its importance is overlooked [35].
2.2. Operations and performance management
Building flexibility to respond quickly to changing market needs has been regarded as
one of the major challenges in OM over recent years [3], [11], [21], [36]. In fact,
competitive pressures and advances in product and processes technologies are forcing
enterprises to revise their strategies and redesign their OM systems [13], [14]. More
explicitly, it is to revolutionize their managerial approaches [29]. This is why experts
3. Youssef Larteb, Abdellah Haddout, Mariam Benhadou and Lahcen Safraoui
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from academic circles, industry and consulting in both LM and OM presented results
that emphasized moving away from what were described as the failures of classic
management towards new attitudes and management techniques coherent with LM
philosophy [8], [25], [26], [27], [28], [32], [40].
Actually, LM and quality approaches require a fundamentally different OM
system than the traditional mass production approaches. As clarified by Fujio CHO,
former Toyota Motor Corporation president, “even if the companies respect people
and practice Kaizen as other LM tools, the important thing is to gather all elements in
one system, which must be put into practice every day with great regularity - not in
spurts – and concretely in the shop floor” [29]. Likewise, [23] emphasizes that the
essence of the LM philosophy is that all business processes and functions integrate
into a unified, coherent and dynamic management system whose single purpose is to
continue to provide better value to customers. According to [12], LM should be based
on an OM system that promotes cooperation and learning for facilitating process
management, resulting in the constant improvement of processes, products and
services, as well as employee fulfillment and customer satisfaction. For [29], LM
must be accompanied by an explicit managerial conception whose fundamental
principles are: Genchi Genbutsu, Challenge, Kaizen, and respect and team work. Still,
trying to describe the LM organizational and operational requirements, [15], define
the Lean Leadership model based on five pillars: 1) Improvement culture, 2) self-
development, 3) Employees qualification, 4) Genba), and 5) Hoshin Kanri. Too, [24]
present the SFM hexagon process model for shop floor management implementation.
The six processes of the model are: 1) Visual management, 2) Standards and
abnormality control, 3) Problem solving, 4) Change point management (CPM), 5)
Communication and 6) Efficiency improvement. Further, Yamashina present the
World Classe Manufacturing (WCM) developed by Fiat and partnering firms in 2005.
It is an integrated management system inspired from LM principals and made up of
ten technical- and ten managerial pillars, illustrated as a temple. The ten managerial
pillars are: 1) Management Commitment, 2) Clarity of Objectives, 3) Route map to
WCM, 4) Allocation of Highly Qualified People to Model Areas, 5) Commitment of
the Organization, 6) Competence of Organization towards Improvement, 7) Time and
Budget, 8) Level of Detail, 9) Level of Expansion, and 10) Motivation of Operators
[17].
Thus, the common goal of these different management and leadership models is to
break the link with traditional management methods and promote an exemplary and
effective leadership. So, implementing LM requires a comprehensive view of the
phenomenon, which should be based on a holistic model comprising the various
dimensions of LM, Lean Leadership, and performance management [5]. Finally, it is
important to believe that there will be a positive impact on overall organizational
performance if the OM systems are designed, or redesigned, appropriately to the LM
specifications.
3. LEAN OPERATIONS MANAGEMENT SYSTEM MODEL -
LOMS
The model elaboration is based both on an extensive review of literature on LM and
on the findings from a various multinationals’ operations management systems
studied in the last ten years.
Starting with a detailed analysis of a various multinationals’ operations
management systems, a draft version of the model was developed. After conducting
4. A Model of Lean Operations Management System: The Response To The Missing Link
Between Lean Toolbox and A Sustainable Continuously Improving Organization
http://www.iaeme.com/IJM/index.asp 9 editor@iaeme.com
literature review, semi-structured interviews with several academic researchers
involved in lean projects were conducted. The final version of the model was refined
using semi structured interviews with a number of experts working in various
multinationals based in Morocco whose production processes related to automotive
and aeronautic manufacturing, and which are involved in lean and continuous
improvement projects. The consistency of proposed model was examined through his
response to seven criteria considered common and fundamental in LM and OM
literature reviews that are:
Accelerating the decision-making process
Boosting the quality of products and activities
Customer needs consideration and satisfaction
Enhancing productivity and efficiency improvement
Realization of the strategic and operative targets
Quick response and proactive management
Creating improvement needs.
Figure 1 Lean Operations Management System model
The model consists of five levels as presented in Fig.1. The framework presented
here regroups the main dimensions of LM and shares many common characteristics
with previous LM and OM taxonomies and frameworks. Although the schematization
differs from other models, the underlying constructs are all quite similar. The main
similarity is the “customer satisfaction” which is the rationale of LM and the essence
of total quality management. Likewise, what the proposed model terms as “internal
processes performance” is a special feature in the various LM taxonomies as well as
in the contemporary performance management literature based on internal processes
performance and non-financial indicators [2], [13], [14], [15], [18], [19], [29], [31],
[32]. In particular, “problem solving” is a dominant characteristic and the fourth “P”
in Liker’s pyramid (Philosophy, People, Process, Problem solving) [29], [30].
Finally, “Genchi Genbutsu” is at the heart of Lean Leadership philosophy for [16] and
[29].
Nevertheless, the model differs from previous taxonomies and frameworks in
several important ways. In fact, besides consolidation and recognition of different
organizational dimensions of LM, operations and performance management, the
proposed model uses accessible and easily concepts more likely to resonate with
practicing managers. Likewise, the proposed model levels are configured to control
the sequential order of their execution and provide a daily agenda for practitioners in
exercise (Fig.2.). In fact, since customer always comes first, the proposed model
compels first to review customer performance as customer complaints and alerts.
Next, internal processes performance review (production, quality, logistics,
maintenance…) is the following step, and productivity, efficiency and effectiveness
5. Youssef Larteb, Abdellah Haddout, Mariam Benhadou and Lahcen Safraoui
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should be key objectives. Since a fall in performance at the customer or internally
shall automatically trigger a problem-solving process, that process is the third step in
the model. Once major customer and internal processes issues are identified and
addressed, selection of proposals and the monitoring of Kaizen actions is the fourth
step in the model. Finally, the “Genchi Genbutsu" provided the most effective tool for
monitoring and quantifying the effectiveness and efficiency of past solutions decided
in step 3 "Problem Solving", and actions proposed under step 4 "Continuous
Improvement".
The proposed model also differs from previous taxonomies and frameworks in
another important way. The main five steps of the proposal follow one another in an
iterative process and each step is shown to be providing the ultimate solution for the
next step. Too, the relationship between the five steps of the proposal is dynamic
since there is a continual feedback loop between them that leads to constant reflection
and analysis of results and, if needed, to enable one to return to previous steps to
refine prior decisions. More explicitly, to reach the "Customer Satisfaction", "Process
performance" must be performed. To do, “Problem solving process” related to
troubleshooting at the customer and in all internal processes and “kaizen activities”
must be boosted. To get there, exemplary leadership based on a spirit of “Genchi
Genbutsu” must take place among all leaders and managers.
Customer
performance
review
•Non-satisfaction review
•Customer claims review
•Customer alertes review
•Customer audits results review
Internal
processes
performance
review
•Production (Productivity, Efficiency, …)
•Quality (Scrap, Customer ppm, Line rejects, …)
•Maintenance ( OEE, Setup times, Maintenance cost, MTBF, MTTR, …)
•Logistics (OTD On time delivery, Inventory turns, …), Etc…
Problem
solving
•QRQC, DANTOTSU
•PDCA-FTA / 8D
•FICS, QQQCCP, ISHIKAWA, 5M, 5Why, LLC, Etc...
Continuos
improvement
- Kaizen
•PDCA
•Quality circle
•Hoshin activities
•Quality task force, Etc…
Genchi-
Genbutsu
•Customer protection’s genba in the case of customer complaints
•Solutions and actions monitoring’s genba in the case of problems solving process
•Actions validation’s genba in the case of kaizen activities, Etc…
Figure 2 LOMS as a daily management agenda
6. A Model of Lean Operations Management System: The Response To The Missing Link
Between Lean Toolbox and A Sustainable Continuously Improving Organization
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4. LOMS MAIN ELEMENTS DESCRIPTION
4.1. Customer satisfaction
Lean thinking is more than an additional organizational approach: it conveys a
particular attitude towards customers [32]. This is to create a system in which each
non-customer satisfaction must be considered immediately be resolved at source,
without delay, one providing a reliable answer on the root causes and actions kept to
avoid recurrence in the future. For this, the company must define for each process a
set of customer satisfaction related key performance indicators. A daily review of
these indicators enhances reactivity and increase customer satisfaction in the hope that
in the long term, the satisfaction will translate into loyalty.
4.2. Internal processes performance
LM is a methodology used to transform complex processes to a smooth continuous
production flow, which delivers customer value more rapidly, improves workflow,
standardizes processes and eliminates waste [39]. Management focus should be on
eliminating these non-value-added activities, which do not enhance the customer's
image of the product or service and do not support the business process. For this
purpose, internal processes performance review is required to encourage managers
and shop floor employees to focus on the critical elements of efficient operations and
to provide effective links across the value chain [8]. This review must take place for
every process and every day (Quality, Production, Logistics, Purchasing ...). It should
help to focus on the five main critical inputs data for each process (Methods;
Materials; Machines; Mans and environment) to determine the causes of non
performance and propose appropriate solutions. More, the establishment of processes
performance animation system integrating the three organizational levels of the
company (strategic, tactical and operational), will lead to a logical overview of the
overall performance of the company and improve synergy between the various
processes.
4.3. Problem solving and learning
LM entails company must learn from its mistakes, identifies the root cause of
problems, defines effective countermeasures and gives people tools to implement
them [29], [30]. This approach also include the provision of timely information for
identifying and eliminating activities that add no value, and identifying causal factors
that may lead to manufacturing improvements. Thus, the presence of a problem
solving system linking the three companies’ levels may significantly improve the
predictive performance of processes, improves responsiveness in respect of one claim
or complaint, reduces employee stressors and will increase their level and amount of
involvement. Adoption of some problem solving tools like 8D, PDCA-FTA, and
DANTOTSU may provide all employees with methodology and the steps for
elaborating action plans and drawing upon the lessons learned from each problem.
4.4. Continuous improvement
Continuous improvements or Kaizen refers to the continual search for improvement
and is recognized as one of the key principles of LM as developed by Toyota [22]. It’s
to continually improve company performances through focused and structured
improvement action, using a dedicated cross-functional team to improve a targeted
work area, with specific goals, in an accelerated time frame [7], [22]. Thus, a
7. Youssef Larteb, Abdellah Haddout, Mariam Benhadou and Lahcen Safraoui
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structured and integrated continuous improvement program should provide
opportunities for both incremental continuous improvement and radical process
redesign [10], [39]. For this purpose, the LOMS’s goal is to create a culture of
continuous improvement and innovation. Especially, as a daily operations
management system, LOMS’s model was created with the intention to allow facilities
to identify and proactively address opportunities for improvement before they
escalated to large-scale problems. Nevertheless, the proposed model must be
underpinned by an unshakeable top management commitment to continuous
improvement by more focusing on individual improvement projects and capacity
building, creating a stronger foundation for a continuous improvement culture to be
developed over time. Similarly, implementing structured continuous improvement
programs requires that organizations invest both monetary and human resources in
training, leadership alignment, focus on the customer, reward and recognition of team
members, and communication of success and failures [7], [39].
4.5. Genchi Genbutsu
The reality on the shop floor does not necessarily become evident during a
performance review meeting.Whatever reports, measures and ideas are transmitted to
management are only an abstraction of what is actually going on in the shop floor to
create value [16]. The only way to report on the status of a process, project or problem
is to get down there and find out yourself [29], [30]. Monitoring the achievement of
actions and solutions embodied in problem solving process (level 3) or kaizen
activities (level 4) and validate their effectiveness and impacts constitute distinctive
features of Lean Leadership. That is why the LOMS’s model as a daily management
system was based on a well-defined and pragmatic methodology that begins with
going and seeing in the shop floor. In order to properly treat a problem or a kaizen
activity, the discussion has to take place in the real place “Genba”, in front of the real
parts “Genbotsu”, and with the real data “Genjitsu” retrieved from persons directly
involved in the shop floor. This obligation concerns, first and foremost, managers
who have to go see themselves what is happening rather than looking at information
regarding process issues from their office [29], [30]. For this purpose, Genchi
Genbutsu is a key approach in problem solving and monitoring kaizen activities and
his principle must remain at the heart of the LOMS model deployment.
5. CONCLUSION
LM as a way to achieve process excellence implies a radical change in how company
drives its operations. Improving existing management systems and operational
processes in consistence with LM requirements is a critical task and an emerging
research topic in operations management literature.
The paper provided a conceptual model of operations management system
consistent with the LM philosophy. The proposed model provides a powerful and
sustainable means to rapidly get an overview and operations performance
appreciation. The model combines the most important points that need to be
addressed on a day-to-day basis from response to customers’ requirements to the
continuous improvement of internal processes. Especially, the LOMS’ model should
enable informed decisions to be made and actions to be taken because it allows
supervising and quantifying the efficiency and effectiveness of all processes each and
every day. For the company, the model can be used not only as a performance
management support but also as methodological way to improve LM maturity level
8. A Model of Lean Operations Management System: The Response To The Missing Link
Between Lean Toolbox and A Sustainable Continuously Improving Organization
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and Lean Leadership practices. As a matter of fact, if LM literature advocates that
several behavioral adjustments and managerial interventions may be necessary in each
LM adoption, the LOMS’ model will be necessarily able to contribute to these
adjustments by improving leadership styles, individual routines, and organizational
cultures.
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