Lean services: a systematic review

Lean service: a contingency perspective

Many firms launch consolidated lean initiatives across all their service units, but because services differ, mandated lean practices may have a poor fit with the receiving unit. Whereas plenty of research has investigated the fit of lean implementation at the service industry level, this is the first to delineate how standard lean service practices fit different service types. Taking a contingency theory perspective, we study a leading European utility company comprising distinct service types. Using purposeful sampling, we interview 36 employees from 15 different teams representing three different service types – professional services, service factories and service shops – and 11 employees from the headquarters who are supporting these units in their lean transformation journeys. We also collect secondary data, including lean programme documentation and audit data. We find that one size does not fit all for lean service; there are important nuances to the relevance of standard lean service practices across different service types. Ten propositions are put forward suggesting how standard lean practices need to be adapted to fit the context of different service types. The findings reject the idea that all service units can progress along the same trajectory in lean service programmes. This paper informs managers how lean service programmes can be tailored to increase the fit with different service types.

Critical success factors of lean in the public services sector: the case of the Greek citizen's service centers

Purpose

The aim of this study is to determine the most critical success factors (CSFs) of lean adoption in a specific Greek public services subsector namely citizen's service centers (CSCs) and to define their underlying structure (latent constructs).

Design/methodology/approach

In this study an online structured questionnaire survey was distributed to all the Greek CSCs and six hundred and seventy-two employees responded and fully completed the questionnaire. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were applied to assess the reliability and validity of the latent constructs of the Lean CSFs.

Findings

Data analysis revealed that the latent constructs of the lean CSFs, namely communication, top management commitment and leadership, organizational culture, training and education, change and project management, availability of resources, teamwork, and employee involvement and empowerment are of major importance for the adoption of lean in the CSCs.

Research limitations/implications

The small percentage of the responding employees of the Greek CSCs, given their large population and the subjective nature of the data collected constitute the main limitations of the present study.

Practical implications

The findings of this research can guide managers and decision makers of CSCs in recognizing the key factors that potentially will influence the successful adoption of lean, and the enhancement of the quality management initiatives of these services organizations. Moreover, the formulated model can also serve as a reference for academics and researchers to generate new research ideas. Finally, the results may offer guidelines to managers of public services organizations of other countries with a similar structure of the public sector.

Originality/value

The present study is stimulated by the existing gap identified in the literature in the field of the public sector. Building on the public sector literature, this is the first study that evaluates the importance of the CSFs of lean in the Greek CSCs and defines their underlying structure.

Effect of lean implementation on team psychological safety and learning

Purpose

Frontline teams are at the centre of lean transformations, but the teams also transform as they implement lean. This study examines these changes and seeks to understand how lean relates to team psychological safety and learning.

Design/methodology/approach

This research setting is the Romanian division of a leading European energy company. The authors collected team-level audit and survey data, which the authors used to test the effect of lean implementation on team psychological safety and learning. The authors’ team-level data are complemented with qualitative interviews conducted with team members and headquarters leaders.

Findings

The results of the regression analyses show that leanness is positively associated with team psychological safety, which is in turn positively associated with learning. Thus, this research provides evidence that leanness – mediated by team psychological safety – increases team learning.

Practical implications

Lean changes team dynamics and learning positively by ensuring and promoting an emotionally sound work environment with clear team structures, an appropriate level of autonomy, and strong leadership.

Originality/value

This paper contributes evidence of important psychological mechanisms that characterise team-level lean implementation. Particularly, the authors highlight how team psychological safety mediates the relationship between leanness and team learning.

Impact of New Bed Assignment Information System on Emergency Department Length of Stay: An Effect Evaluation for Lean Intervention by Using Interrupted Time Series and Propensity Score Matching Analysis

A long waiting period for available beds in emergency departments (EDs) is the major obstacle to a smooth process flow in ED services. We developed a new bed assignment information system that incorporates current strategies and resources to ease the bottleneck in the service flow. The study’s purpose was to evaluate the effect of the lean intervention plan. We included 54,541 ED patient visits in the preintervention phase and 52,874 ED patient visits in the postintervention phase. Segmented regression analysis (SRA) was used to estimate the level and trend in the preintervention and postintervention phases and changes in the level and trend after the intervention. After the intervention, the weekly length of stay (LOS) for patient visits, admitted patient visits, and nonadmitted patient visits decreased significantly by 0.75, 2.82, and 0.17 h, respectively. The trendline direction for overall patient visits and nonadmitted patient visits significantly changed after the intervention. However, no significant change was noted for admitted patient visits, although the postintervention trend visually differed from the preintervention trend. The concept of lean intervention can be applied to solve various problems encountered in the medical field, and the most common approach, SRA, can be used to evaluate the effect of intervention plans.

Lean and its impact on sustainability performance in service companies: results from a pilot study

Purpose

The purpose of this empirical research is to understand the application of Lean practices (technical and social) and tools in the service sector, whose implementation is less studied, despite its economic relevance. The study aims to extend previous studies that focused on the relationship between Lean and operational and financial performance, and analyzing the impact on sustainability, encompassing economic, social and environmental perspectives.

Design/methodology/approach

A pilot survey was conducted with Lean experts in European service companies. The authors have utilized various professional contacts on LinkedIn and a satisfactory response rate was obtained for analysis.

Findings

The results of the study showed that there are several motivating factors for the implementation of Lean, the highlights being improving customer satisfaction, efficiency, delivery and cost reduction. The most frequently used Lean tools are related to the identification of improvement opportunities and causes of problems. The pilot survey also made it possible to identify the greater use of technical practices than social practices. The sustainability performance analysis showed that the better performance of service companies is in the economic dimension.

Originality/value

The authors have identified no empirical studies linking Lean and sustainable performance in the service sector. This study bridges this cognitive gap through a pilot study and therefore makes an original contribution to the current literature.

Identification of Waste Based on Lean Principles as the Way towards Sustainability of a Higher Education Institution: A Case Study from Indonesia

Lean management has generated new approaches to reduce non-value-adding activities in different sectors of the economy, including in higher education systems. Lean principles in higher education institutions (HEIs) contribute positively to sustainability performance. The current study aims to: (a) assess waste in HEIs based on lean principles and even their potential effect on sustainability; (b) establish the relationship among wastes; (c) develop a structural model using Interpretative Structural Modeling (ISM); (d) carry out the Matrice d’impacts Croisés Multiplication Appliqué Àun Classement (MICMAC) analysis. In Phase 1 of this study, the identification of waste modes in HEIs was established. In Phase 2, risk assessment of each waste mode was conducted using the waste-Failure Mode and Effect Analysis (w-FMEA) technique. In Phase 3, ISM-MICMAC was used to identify relationships among critical waste modes. The results showed that eighteen waste modes were identified as critical in HEIs—with six waste modes being autonomous determinants; four were dependent determinants, four were linkage determinants, and four were driver determinants. This study is expected to help academicians and practitioners understand HEI’s waste types by listing the critical wastes, mapping their interrelationship, identifying the driving power and dependence, and proposing mitigation actions. It will also contribute to the growing body of literature highlighting the waste in HEIs.

An empirical investigation of performance assessment of Indian healthcare industry

Purpose

The purpose of the study is to measure the performance of Indian hospitals, both operationally and financially, by using hospital KPI's. The assessment is predominantly done by linking it to the existing Lean practices in Indian hospitals.

Design/methodology/approach

An empirical study based on cross-sectional survey of hospital managers and specialists in various private healthcare facilities across India was conducted to validate the proposed Lean framework. From an extensive literature survey, the authors identified quality, delivery, efficiency, accessibility and patient centeredness to be the main operational performance (OP) indicators for hospitals. Business or financial performance was measured based on parameters which are average revenue per occupied bed (ARPOB), earnings before interest, tax, depreciation and amortization (EBITDA) and operating revenue. Confirmatory Factor Analysis (CFA) was carried out using a specialized technique, called Structural Equation Modelling(SEM) and an explicit factor structure was hypothesized.

Findings

Management commitment towards Lean in hospitals is statistically proven to have impacted operational and financial performance. However, leanness in technology and business processes showed no statistical significance on either operational or financial performance parameters. Hospital stakeholders showed statistical significance on though it had no impact on the financial performance. Results obtained from the statistical analysis indicate a positive impact of hospital Lean practices on timely delivery of services and improved service quality. Efficiency, accessibility of services and patient centered behavior in hospital operations could not be statistically proven to have impacted the financial performance.

Social implications

Effectiveness of Lean management (LM) principles in improving hospital operations is largely dependent on patient centered behavior. Empowered employees who are trained to add value from a customer view point, make hospital operations safe and improved. Properly trained and communicated employees who are committed to quality improvements can make a positive impact on patients' quality of life and thus positively impact the society. The study lists ways to attain the required outcomes.

Originality/value

This paper is among the very few that has attempted to suggest ways to link implementation of Lean practices more effectively in Indian hospitals to improve hospital performance at operational and financial levels.

From Lean Production to Lean 4.0: A Systematic Literature Review with a Historical Perspective

Over recent decades, the increasing competitiveness of markets has propagated the term “lean” to describe the management concept for improving productivity, quality, and lead time in industrial as well as services operations. Its overuse and linkage to different specifiers (surnames) have created confusion and misunderstanding as the term approximates pragmatic ambiguity. Through a systematic literature review, this study takes a historical perspective to analyze 4962 papers and 20 seminal books in order to clarify the origin, evolution, and diversification of the lean concept. Our main contribution lies in identifying 17 specifiers for the term “lean” and proposing four mechanisms to explain this diversification. Our research results are useful to both academics and practitioners to return to the Lean origins in order to create new research areas and conduct organizational transformations based on solid concepts. We conclude that the use of “lean” as a systemic thinking is likely to be further extended to new research fields.

Whose experience is it anyway? Toward a constructive engagement of tensions in patient-centered health care

Purpose

Healthcare delivery faces increasing pressure to move from a provider-centered approach to become more consumer-driven and patient-centered. However, many of the actions taken by clinicians, patients and organizations fail to achieve that aim. This paper aims to take a paradox-based perspective to explore five specific tensions that emerge from this shift and provides implications for patient experience research and practice.

Design/methodology/approach

This paper uses a conceptual approach that synthesizes literature in health services and administration, organizational behavior, services marketing and management and service operations to illuminate five patient experience tensions and explore mitigation strategies.

Findings

The paper makes three key contributions. First, it identifies five tensions that result from the shift to more patient-centered care: patient focus vs employee focus, provider incentives vs provider motivations, care customization vs standardization, patient workload vs organizational workload and service recovery vs organizational risk. Second, it highlights multiple theories that provide insight into the existence of the tensions and how they may be navigated. Third, specific organizational practices that engage the tensions and associated examples of leading organizations are identified. Relevant measures for research and practice are also suggested.

Originality/value

The authors develop a novel analysis of five persistent tensions facing healthcare organizations as a result of a shift to a more consumer-driven, patient-centered approach to care. The authors detail each tension, discuss an existing theory from organizational behavior or services marketing that helps make sense of the tension, suggest potential solutions for managing or resolving the tension and provide representative case illustrations and useful measures.

Learning by doing: an undergraduate lean A3 project in a Kuwaiti bank

Purpose

This case study shows how methods of lean philosophy can be successfully taught to undergraduate students and applied to improving a real-world loan process. Students were instructed to use newly acquired classroom skills to analyse and improve a bank loan process in Kuwait.

Design/methodology/approach

This study involved an initial gemba walk through the bank. A case study format with direct observation and semi-structured interviews was adopted by 27 undergraduate students to identify waste, analyse the loan process and develop an efficiency plan.

Findings

The results revealed that undergraduate students could quickly learn basic lean principles and techniques and utilize them in a real-world situation to significantly improve a bank loan process. Areas of waste included over-production, over-processing, defects in procedure, under-utilized skills, wasted motions and poor time management. Suggested corrective measures were expected to reduce loan processing time by 30%.

Practical implications

Increasing costs and competition in the business environment make efficiency improvements imperative, and it was shown that students can play a major role in applying lean principles to a bank loan process while gaining knowledge and skills highly valued in industry. Universities have the opportunity to create a valuable learning experience for undergraduate students in applying classroom skills to solving a real-life problem.

Originality/value

This is the first study of a novel classroom technique for teaching undergraduate students to apply lean techniques in a Kuwaiti bank.

Fifteen years of international journal of productivity and performance management (2004–2018)

Purpose

International Journal of Productivity and Performance Management (IJPPM) is one of the prominent journals publishing on general management with a particular focus on performance management and productive sciences. The objective of this study is to provide an academic structure overview of the journal between 2004 and 2018 using bibliometric tools.

Design/methodology/approach

Data used for this study were extracted using the Scopus database. Bibliometric analysis using several bibliometric indicators are adopted to know the major trends and themes of the journal. Mapping of bibliographic data is carried using VOSviewer and Gephi software.

Findings

Authors: Most of the IJPPM contributors are affiliated to the UK and India. Journal Performance: It is gaining pre-eminence in terms of total citations as well as CiteScores. Main themes: Major themes published in the journal are “performance management”, “productivity”, “six sigma”, “lean” and “supply chain management”.

Originality/value

IJPPM's growing influence in the scientific community has generated the interest to analyse the journal's publication and growth pattern. Moreover, no such retrospective bibliometric study for IJPPM is conducted so far.

Towards Lean Teaching: Non-Value-Added Issues in Education

Lean Thinking is a methodology based on improving the efficiency of productive processes by removing non-value-added issues. This methodology was firstly applied in the manufacturing industry, but it has also been applied to many service companies, bringing very good results. In the last decade, some works have tried to research the adaptation of Lean principles and practices to teaching, especially in technology and other STEAM subjects. In this sense, the aim of this work is to deepen this new trend by establishing what issues are non-value-added (waste) ones in education and classifying these kinds of waste in order to be able to analyze how to eliminate them. For this purpose, we adapt the classification made in other kinds of processes and extend other authors’ findings regarding this topic.

A critical analysis of organizational transformation – PSR

Purpose

Hunter Harrison, CEO of the railroad company CSX, died on December 16, 2017. Harrison, known as the railroad transformation guru, was a controversial person. While his transformations were applauded by investors, they were also subject to significant criticism. The author changes triggered service disruptions, customer complaints and federal scrutiny. The purpose of this paper is to conduct an in-depth analysis of the transformation at CSX and to develop a framework for the analysis of organizational transformation projects.

Design/methodology/approach

The authors critically analyze the transformation at CSX – known as precision scheduled railroading (PSR). The authors base the initial analysis on the Lean approach to organizational change the authors compare and contrast the two approaches and the authors highlight both positive and negative aspects. The empirical data was collected via two rounds of interviews with employees at CSX – the first informal, the second structured. The lack of academic articles dealing with PSR, the authors focused on the review on trade and newspaper articles.

Findings

First, while many transformations are conducted under the assumption that they will improve both effectiveness and efficiency, they are in reality often mainly efficiency improvement programs that can, in fact, hurt both effectiveness and employee morale. Second, the paper presents a framework for the analysis of transformation projects.

Research limitations/implications

The authors identify factors for analysis of transformation programs and the authors develop a framework, which structures significant change aspects into three categories, namely, purpose, process and people.

Practical implications

Organizations can use the framework to understand the requirements for successful transformation, to analyze if the chosen method matches the organizational strategy and to facilitate successful implementation in the companies.

Originality/value

This is the first research paper on PSR and the first paper contrasting PSR with other transformation methods.

Leanness evaluation in health-care organizations using fuzzy logic approach

Purpose

Lean practices are one of the fundamental practices adopted by health-care organizations to improve service quality and to reduce cost. In this context, the measurement of leanness in health-care organizations has become imperative. The purpose of this study is to measure the leanness of a hospital using fuzzy logic.

Design/methodology/approach

The design of the research includes two major steps. First, the identification of enablers, criteria and attributes of leanness constitutes the measures of assessment. Second, the above measures in the case hospital are assessed by using fuzzy logic approach.

Findings

This study suggests that leanness assessment is essential to identify the current lean capability of a health-care organization. This would help the health-care organizations to improve their lean performance further. The findings of the study suggest that the leanness of the case hospital is “Lean” (fuzzy range: 5.61, 7.24 and 8.91).

Practical implications

This study brings in three important implications from managerial point of view. First, it helps the management to assess the current level of leanness of the hospital. Second, it identifies the attributes that prevent the organization from being more lean. Third, it provides suggestive measures to address the weaker attributes and enables the enhancement of lean performance further.

Originality/value

The leanness assessment framework developed in the hospital operations is found to be original, and it adds value to the leanness assessment in health-care operations.

Investigating the relationship between Lean Six Sigma's intangible impacts and organisational innovation climate factors

Purpose

This paper aims to investigate the relationship between the intangible impacts of Lean Six Sigma (LSS) and organisational innovation climate factors and proposes a conceptual model to link them. This paper ultimately aims to extend the range of LSS application by proposing LSS as a tool for fostering organisational innovation.

Design/methodology/approach

The paper followed a qualitative research approach to identify, analyse and categorize the intangible impacts of LSS by reviewing previous literature on its application and conducting in-depth interviews with its experts. Then, a detailed description of organisational innovation climate was provided to highlight its main factors. Finally, a conceptual model was developed to illustrate the relationships among the collected information.

Findings

LSS was found to have many intangible impacts categorized as organisational or individual related. Organisational innovation climate is determined by a number of factors that were found to be positively influenced by many of LSS's intangible impacts. Thus, a number of propositions between LSS's intangible impacts and organisational innovation climate factors were proposed, as illustrated by a conceptual model.

Originality/value

Studying the relationship between LSS and innovation by considering LSS's intangible impacts and linking them to organisational innovation climate factors is a relatively new approach that makes the contribution of this research valuable and significant to academics and professionals.

Effects of Financial Education and Financial Literacy on Creative Entrepreneurship: A Worldwide Research

The limited attention given to financial education in the development of student competencies can undermine the decision making of individuals in their adulthood. This circumstance has been widely studied in the literature, where the effect of financial literacy on creative entrepreneurship is influenced. The objective of this study is to analyze global research trends on the effect of financial education and financial literacy with the creativity of individual entrepreneurship. For this, a bibliometric analysis was carried out on 665 documents related to the subject of study during 1990–2018 period. The results show the most influential journals, authors, institutions, countries, and areas of knowledge on this scientific research. This work detects the main trends and patterns to offer a vision of the relationship between financial education and creative entrepreneurship. It should be noted that this research area has become a relevant field of study in education, finance, business, and management issues.

Lean Six Sigma in consumer banking – an empirical inquiry

Purpose

The evolution of Lean Six Sigma (LSS) within the operations management theory has enjoyed significant success in both manufacturing and services. Though the applicability of LSS is evident in the services sector through various publications, academic research on the use of LSS in the Banking and Financial Services (BFS) is limited, and hence deserves greater attention. The purpose of this paper is to illustrate the application of LSS in consumer banking in real-time setting.

Design/methodology/approach

A case study method is used to study the application of LSS in two consumer banks with stage 1 featuring identification of appropriate consumer banks where LSS projects could be undertaken, and suitable LSS readiness assessment was performed. In stage 2, LSS project opportunities were identified in the select banks through stakeholder engagement. Finally, in stage 3, LSS projects were executed for process improvements in a real-time setting.

Findings

The case studies provide evidence of the successful application of LSS in consumer banking and the associated multiple benefits. The extent of applicability and appropriate managerial implications in project management context are elaborated. An LSS project selection criterion is recommended as a part of the study. Further, the study explains five important managerial implications in BFS context, with an outlook for future research.

Research limitations/implications

Practitioner research shows that BFS organizations have changed their ways of working by adapting LSS over the last decade. However, the academic research concerning the applicability of LSS in BFS is apparently limited, and none of these are specific to “consumer banking.” This study serves as a strong foundation for future research in this area, which is at its nascence and upcoming in the researchers’ community. However, strong generalizations should not be made as this study is limited to two cases.

Practical implications

Since the cases are executed in the real-time setup of consumer banks, the paper has several practical implications. First, the paper confirms the applicability of LSS in consumer banking and concludes that LSS project management is merely a sub-set of LSS deployment. Second, LSS needs to be understood using a “systems thinking” perspective in order to move away from a narrow project-only approach. An LSS project selection criterion is recommended as a part of the study, which could serve as a managerial resource. Other managerial implications include effective management of stakeholders and change leadership as essential elements of LSS project management in banks.

Originality/value

LSS has been successful in the past few decades in the manufacturing and service sectors. However, its application in BFS is limited. This study illustrates the applicability of LSS in consumer banks, which deals with high volumes of data, customer bases and associated financial transactions.

A systematic review of Lean in healthcare: a global prospective

Purpose

Fostered by a rapid spread beyond the manufacturing sector, Lean philosophy for continuous improvement has been widely used in service organizations, primarily in the healthcare sector. However, there is a limited research on the motivating factors, challenges and benefits of implementing Lean in healthcare. Taking this as a valuable opportunity, the purpose of this paper is to present the key motivating factors, limitations or challenges of Lean deployment, benefits of Lean in healthcare and key gaps in the literature as an agenda for future research.

Design/methodology/approach

The authors used the secondary data from the literature (peer-reviewed journal articles) published between 2000 and 2016 to understand the state of the art. The systematic review identified 101 articles across 88 journals recognized by the Association of Business Schools ranking guide 2015.

Findings

The systematic review helped the authors to identify the evolution, current trends, research gaps and an agenda for future research for Lean in healthcare. A bouquet of motivating factors, challenges/limitations and benefits of Lean in healthcare are presented.

Practical implications

The implications of this work include directions for managers and healthcare professionals in healthcare organizations to embark on a focused Lean journey aligned with the strategic objectives. This work could serve as a valuable resource to both practitioners and researchers for learning, investigating and rightly adapting the Lean in the healthcare sector.

Originality/value

This study is perhaps one of the comprehensive systematic literature reviews covering an important agenda of Lean in Healthcare. All the text, figures and tables featured here are original work carried by five authors in collaboration (from three countries, namely, India, the USA and the UK).

V, Madhavan V, Gurumurthy A. Development of Lean Six Sigma training module: evidence from an emerging economy

Purpose

Nowadays, firms are keen on improving the quality culture in the organizations. The proven success of Lean and Six Sigma has given rise to the synergetic Lean Six Sigma (LSS) approach that has been catching fire in the past one decade. However, there exists a gap between the understanding and implementation of LSS in the organizations, especially in the emerging economies. Taking this as a valuable opportunity, the purpose of this paper is to present a development of LSS training module.

Design/methodology/approach

This study starts with a literature review of LSS to reinforce the understanding of the research subject in scope of manufacturing sector. Then, an online questionnaire was designed and used to collect responses from 181 companies located in the Indian sub-continent. Subsequently, the results obtained from the survey were analyzed using COARSE approach.

Findings

This study reveals two key findings and associated contributions. First, it was found that the overall awareness of LSS within the responded manufacturing firms is about 70.4 percent. Second, there is no single standard training module that exists in any of the sampled firms to cater to their quality programs. Hence, in order to improve the LSS awareness which could subsequently help managers as a resource for creating an efficient workplace, this paper presents a structured LSS training framework.

Research limitations/implications

Although this paper presents the importance of LSS and associated awareness level among the responded firms, more empirical evidence is required to generalize the model findings. Second, this study is scoped to firms that work out of the Indian sub-continent, and this provides a future opportunity to expand the scope of this research toward a global study for a comparison between emerging and developed economies. Third, this study is limited to manufacturing firms and hence paves an opportunity to research on a similar theme in services context as well.

Practical implications

Before embarking on an LSS journey, an organization can use the LSS training module proposed in this study to assess the employee awareness on LSS. Furthermore, organizations that already have a mature LSS practice can incorporate the LSS training module for periodic evaluation of the employees for effective change management.

Originality/value

The training module presented in this paper is the original contribution by the authors. This is no association to any single identifiable organization or associated funding. The direct practical implication of its application in real time is the value that managers could derive from the proposed LSS training framework.

A directed content analysis of viewpoints on the changing patterns of Lean Six Sigma research

Purpose

The purpose of this paper, builds on previous studies that explored the research patterns over 15 years, is to consider the current status of the integration of Lean and Six Sigma. More specifically, this research addresses whether Lean and Six Sigma are stronger together and explores the reasons why Lean researchers and practitioners may be less likely to integrate Six Sigma in their work.

Design/methodology/approach

The research utilises a survey of 25 established and respected academics and practitioners from 16 countries. The questionnaire is analysed using a direct content approach and coded in NVivo.

Findings

The findings suggest that challenges may lie in the perception and understanding of statistics as well as short-term rather than long-term focus on improvement. The findings also suggest that academics and practitioners believe that Lean Six Sigma has developed over time and will continue to develop and improve as a methodology rather than being replaced with a new methodology.

Research limitations/implications

The survey has a sample size of 25, albeit all respondents are established and very experienced practitioners and academics.

Practical implications

For organisations that are introducing or refreshing their continuous improvement initiatives, this research identifies some of the challenges and provides the opportunity to address them to maximise the opportunities for success and sustainability.

Originality/value

The value of this paper is that it further addresses the debate over the integration of Lean and Six Sigma for many organisations which still employ Lean alone, but beyond this it explores how they will continue to develop and whether they are a permanent edition to the quality management landscape or a transition to something else.

Lean culture: a comprehensive systematic literature review

Purpose

The purpose of this paper is to assess the level of pragmatic ambiguity (PA) lean culture has currently in the manufacturing and service literature.

Design/methodology/approach

A comprehensive systematic review of academic (journals, books and theses) and commercial literature was undertaken drawn from a six databases search of two keywords (“lean” and “culture”) and related citations.

Findings

A total sample of 1,066 references (678 academic papers, 121 books, 103 theses and 164 commercial documents) were analyzed. The authors found contributions from 67 countries but oddly, only two came from Japan. In total, 89 percent of citations were directly about lean culture. However, for 86 percent of them, lean culture was only discussed superficially. All four literature segments show an over 85 percent agreement on lean culture being an organizational aim. The authors encountered 103 definitions of organizational culture and found 13 definitions of lean culture. Issues of culture gap, leadership, human resource management, sustainability and innovation are found to amplify lean culture’s already high PA level.

Research limitations/implications

Further research and development are needed to decrease lean culture’s PA level and improve understanding of lean from a cultural perspective.

Practical implications

Current lean culture’s high PA level has positive and negative effects on lean implementation. Taking lean implementation from a cultural perspective may facilitate an organization’s lean transformation journey.

Originality/value

This is the first systematic literature review on lean culture using a broad and inductive approach. An original evidence-based definition of organizational culture is proposed.

A two-way causal chain between lean management practices and lean values

Purpose

Organizations have varied levels of success with Lean implementation and many did not see tangible results. Some scholars believe the reason has to do with weak Lean culture or Lean values (LVs). The purpose of this paper is to study the relationship between Lean implementation practices and LVs. The research goes further to study the nature of this relationship; does LVs affect Lean practices only or do they affect each other in a reciprocal manner?

Design/methodology/approach

Literature regarding Lean implementation in various sectors was reviewed. Representatives from several organizations were surveyed. Results from both approaches are compared and presented to highlight the key challenges and drivers facing Lean implementation.

Findings

Lean works well on enhancing organization performance (OP) but the implementation has to be preceded by careful nourishment of the proper Lean culture and LVs. The relationship between Lean implementation and LVs is of a complex nature and driven by OP.

Practical implications

The study has important managerial implications that is if Lean is going to be sustained, continuous efforts has to be exerted by Lean professionals to engage leaders and decision makers in the organization and ensure proper values are nurtured.

Originality/value

This is the first study to examine the reciprocal relationship between Lean implementation practices and LVs while focusing on OP by employing a structural statistical model.

Critical success factors for Lean implementation in IT outsourcing relationships

Purpose

Following positive results of Lean implementation in manufacturing environments, Lean has become an emerging philosophy for clients and suppliers of information technology (IT) services. However, how to implement Lean in IT outsourcing relationships has been addressed sparsely in academic literature. The purpose of this paper is to investigate critical success factors (CSFs) for implementing Lean in IT outsourcing relationships. Key findings, implications and avenues for future research are discussed.

Design/methodology/approach

Six IT outsourcing relationships were qualitatively investigated by means of 36 semi-structured interviews. CSFs were identified based on interview transcription analyses, selection techniques and expert reviews.

Findings

In total, 16 CSFs for Lean implementation in IT outsourcing relationships are identified and described.

Practical implications

The CSFs presented in this paper indicate key areas that deserve managerial attention to steer Lean implementation efforts in IT outsourcing relationships in a favorable direction.

Originality/value

This study is the first to describe the phenomenon of “Lean IT outsourcing” and provides researchers and practitioners with a foundation to further examine Lean implementation in IT outsourcing relationships.

Lean and Six Sigma practices in the public sector: a review

Purpose

The purpose of this paper is to provide a critical analysis of publications relating to the use of continuous improvement (CI) methodologies, such as Lean, Six Sigma and Lean Six Sigma over a 17-year period, to identify the themes and gaps, while informing the development of a future research agenda.

Design/methodology/approach

The systematic literature review identified 121 papers published between 2000 and 2017 from searches of over 1,400 peer-reviewed academic journals and also identified the application of Lean, Six Sigma and Lean Six Sigma across the public sector.

Findings

This research compares the scale and breadth of the public sector with the application of CI methodologies and finds that such application is unstructured and, in some areas, sporadic. The research identifies common themes and research gaps including areas such as lack of shared understanding of Lean, gaps in strategy development and leadership and an overfocus on tools alone.

Research limitations/implications

The methodology is focussed on the journals rated in the ABS Journal Guide 2015, which allowed manual searches for accuracy and relevance to the area of investigation. It is recognised that this may exclude some articles which have been published in other journals but allowed for a structured and detailed investigation. The research identifies some very clear gaps which can inform future research agendas.

Practical implications

The paper details the implications and challenges to the public sector, generally, and to executive leadership, specifically, and, in particular, covers the common issues and concerns, which in turn will assist public sector organisations in implementing, reviewing or refreshing their CI initiatives.

Originality/value

No similar work has been conducted and while some individual areas such as health and education have been the subject of more focus, this research explores the public sector as a whole and considers the patterns of research in that context.

Overall Task Effectiveness: a new Lean performance indicator in engineer-to-order environment

Purpose

The purpose of this paper is to propose a new Lean metric named Overall Task Effectiveness (OTE), which can help analyst to define target task times and to identify the hidden losses that account for most of the recorded time of manual assembly activities.

Design/methodology/approach

An alternative classification structure of the losses is developed to divide them in two classes. In the first one the losses that are external to the project order are included, and in the other one those due to inefficiencies directly ascribable to the project order are considered. Starting from this classification structure of the losses, a novel Lean metric, inspired from the well-known Overall Equipment Effectiveness (OEE), is developed to evaluate the effectiveness of a manual assembly task. A case study, which briefly explains the methodology and illustrates the capability of the corresponding metric, is provided.

Findings

This tool can be considered a suitable method to achieve simultaneously a dual purpose to establish time standards and to identify the hidden losses that account for most of the recorded time of manual assembly activities, estimating the impacts of potential corrective actions in terms of both efficiency and effectiveness.

Practical implications

OTE provides practitioners with an operative tool useful to highlight the points where the major inefficiencies take place in industries producing large complex items via manual assembly lines. Its practical application is demonstrated using a case study concerning a manufacturer of train wagons.

Originality/value

One distinctive, and contemporarily appealing, feature of OTE with respect to other analogous KPIs is that it provides a breakdown structure for process losses that simplifies the task of evaluating the current performances and, at the same time, individuates both the source of losses and the corresponding corrective actions.

V, R. R. Critical success factors of TQM, Six Sigma, Lean and Lean Six Sigma

Purpose

The purpose of this paper is to review the existing literature on the critical success factors (CSFs) of various continuous improvement (CI) like total quality management (TQM), Lean, Six Sigma and Lean Six Sigma (LSS), and perform a content analysis (CA) leading to an agenda for future research.

Design/methodology/approach

CA is based on literature review of 41 papers published in peer-reviewed scholarly journals. A four-stage methodology is used by the authors, with Stage 1 featuring relevant material collection; Stage 2 presenting a descriptive analysis; Stage 3 outlining the category selection; and Stage 4 featuring the material evaluation using clustering and Pareto analysis.

Findings

The CA revealed various research implications and directions for the future. The number of studies in the literature regarding CSF assessment is found to be far from substantial while compared to CI implementation. Assessment methodologies developed have been ranging from qualitative to quantitative models. Key gaps were identified and directions for CSF assessment are proposed which requires further validation.

Research limitations/implications

Only articles that appeared in peer-reviewed journals were analyzed; conference papers, reports, manuals and white papers from practice were excluded. Another limitation of the paper would be the scope of CA limited to four CI constructs – TQM, Lean, Six Sigma and LSS. Research implications indicate that the future studies in this domain would be intensive toward analyzing the vital CSFs for enterprise organizational excellence and not merely process excellence.

Practical implications

This review study can serve as a resource for both researchers and practitioners to understand the importance of CSFs and positioning CSFs for the successful implementation of CI programs.

Originality/value

The CA on the existing literature on CSFs for CI presents a unique, systematic effort to identify an agenda for future research. This study is the apparently the first of its kind on CSF assessment.

Lean production, Toyota Production System and Kaizen philosophy

Purpose

The purpose of this paper is to compare principles from the original Toyota Production System (TPS), the Toyota Way 2001 and Kaizen philosophy with principles derived from Japanese Zen Buddhism. The paper would also like to enlarge the debate concerning some lessons learnt from Japanese culture in order to avoid Lean implementation failures.

Design/methodology/approach

The original English version of Taiichi Ohno’s book dedicated to the TPS, the Toyota Way 2001 and other relevant papers regarding Kaizen were reviewed and analyzed. The principles that emerged from the review of this literature were then compared with similar philosophical principles from Japanese Soto Zen Buddhism. The literature concerning Zen philosophy was methodically analyzed and categorized using the content analysis.

Findings

The results of this research show many theoretical parallelisms as well as lessons for practitioners, in particular referring to principles such as Jidoka, just-in-time, waste identification and elimination, challenge, Kaizen, Genchi Genbutsu, respect for people and teamwork.

Research limitations/implications

Analysis and results are mainly based on the literature that was found, reviewed and categorized, along with the knowledge of authors on Zen philosophy. Results could differ depending on the literature reviewed and categorized.

Practical implications

The results of this research bring food for thought to practitioners in terms of lessons learnt from Japanese culture, Toyota principles and management style in order to avoid Lean implementation failures.

Originality/value

This is one of the first papers which compares Lean-TPS and Kaizen principles with the Zen philosophy to try to learn lessons for succeeding in Lean implementation.

Assessing Lean adoption in food SMEs: Evidence from Greece

Purpose

The purpose of this paper is to determine the current state of the Lean principles adopted by food small and medium-sized enterprises (SMEs).

Design/methodology/approach

The case study approach was undertaken in order to gain insights into Lean adoption. Nine Greek food SMEs certified according to the ISO 9001 quality management system (QMS) and the ISO 22000 food safety management system (FSMS) were approached. Interviews were conducted with the chief executive officers and the company managers in charge of the QMS or FSMS, based on a structured questionnaire.

Findings

The food SMEs participating in the present study adopt Lean principles to a high extent. However, there is room for further improvement.

Research limitations/implications

The fact that the data collected suggests subjective business evidence and not objective as well as the fact that only two representatives of each of the nine food SMEs were conducted, comprise the main limitations of the present study. So, the results should be considered with caution, as far as the Lean adoption in the Greek food sector is concerned. Based on these limitations, future research suggestions can be made.

Practical implications

Based on the present study, suggestions can be made regarding the successful adoption of Lean principles, not only for the sample SMEs but also for the whole of the food sector. More specifically, by determining the strengths and weaknesses of the food SMEs’ efforts to adopt Lean, suitable managerial initiatives can be undertaken by these companies as well as the whole sector to fully adopt Lean and derive the respective benefits.

Originality/value

The paper provides insights into the adoption of Lean principles in the Greek food sector. This is the first study in the field of Lean that has been carried out in the Greek food SMEs.