Introduction to the special issue on Kaizen: an ancient operation innovation strategy for organizations of the XXI century

Application of Kaizen philosophy for enhancing manufacturing industries’ performance: exploratory study of Ethiopian chemical industries

Purpose

Kaizen is an umbrella concept for a management philosophy based on a set of principles and values with different tools and techniques that form part of Company-Wide Quality Control. The purpose of this study to explore the empirical evidence of Kaizen philosophy practice and its effect on Ethiopian manufacturing industries, chemical companies in particular.

Design/methodology/approach

After the literature review, an exploratory empirical research, supported on a company observation, was adopted. The eight companies visit giveaway collecting annual technical reports and Kaizen award presentations. The review structure encompassed four major approaches. The first approach is conducting extensive literature review and adopting methodologies. The second approach is examining secondary data and developing SWOT analysis. The third is exploring Kaizen practices, developing framework, identifying drivers and barriers using charts, diagrams and graphs. The final approach is proposing way forward and implications based on the findings from the investigative study to emphasize the link between Kaizen practice and its effect on manufacturing industries’ performance.

Findings

The findings indicate practice of Kaizen brought in achieving monetary, nonmonetary and qualitative results. However, results vary from company to company. The average attained improvements of productivity, production volume, machine productivity and sales volume are 2.77%, 28.69%, 10.14% and 31.53% respectively. Moreover, a total of 71,932,472.19 ETB is saved by following structured framework and practice of social and technical factors. However, companies could not sustain Kaizen activities and unable to maintain the attained substantial improvements due to less effort made on some of the Kaizen practices identified as barriers on the cause and effect diagram of this exploratory study.

Research limitations/implications:

A sample size of eight companies is not adequate to generalize key findings of this study. This will be put right by carrying out further surveys in the future using questionnaire and semistructured interviews.

Practical implications

The findings of this study underlined that practice of Kaizen philosophy on chemical companies supported by structured implementation framework, full practice of drivers, eradicating barriers, sustaining practices and maintaining improvements enable in enhancing chemical companies performance through achieving quantitative (monetary and nonmonetary) and qualitative results.

Originality/value

Although there are a number of studies published on Kaizen, currently it is found that there is lack of literature on practice and effect of Kaizen philosophy. Based on this exploratory study and assessment, the framework and circumstance of Kaizen philosophy practices are providing valuable insights for chemical companies, other manufacturing industries and organizations, which will be on board on this voyage including Ethiopian Kaizen Institute, practitioners and academicians.

Application of Kaizen-Kata methodology to improve operational problem processes. A case study in a service organization

Purpose

The purpose of this paper is to explore, study, analyze and implement Kaizen–Kata methodology in a service food organization (first-level restaurant), facing challenges in different operational processes that affect and influence the case company performance and customer satisfaction.

Design/methodology/approach

The service organization implemented Kaizen–Kata methodology to improve one operational problem process. A case-study approach was used in this research to understand the effects of the Kaizen–Kata methodology in solving problems in their operational service process. Different Kaizen–Kata techniques and tools (histograms, Pareto chart and Ishikawa diagram) using the Plan, Do, Check, Act improvement cycle framework were used.

Findings

Successful implementation of the proposed methodology reduced the main impact of the problem’s effects (customer’s complaints, process reworking, extra-cost, delays, among others). The effects of the problem were reduced on average by 70%. Some Kaizen–Kata routines were identified in a service process environment.

Research limitations/implications

The main limitation of the research is that this work is a just one-case study. A main generalization is not possible, because it involves a company within a company.

Practical implications

Some other service companies can use the Kaizen–Kata methodology to solve any kind of operational problem within their processes. Service managers can learn about the methodology to apply and improve their operational performance and handle customer’s complaints.

Originality/value

A continuous improvement manufacturing methodology was imported to apply in an operational service process. The Kaizen–Kata methodology contributed significantly to reduce delays, handle customer’s complaints, process reworking and deal with extra costs, among other operational problems’ effects. In addition to that, in the literature, most of the Kaizen applications are in manufacturing companies. To the best of authors’ knowledge, this was the first study of applied Kaizen–Kata in a service organization (a fast-food restaurant).

Kaizen-Kata, a Problem-Solving Approach to Public Service Health Care in Mexico. A Multiple-Case Study

Purpose: Mexico's public hospitals are experiencing major operational problems which seriously affect the care of Mexican citizens. Some hospitals have initiated efforts to apply the Kaizen philosophy to improve this situation. Therefore, the purpose of this article is to analyze the methodological impact of Kaizen-Kata implementation in Mexican public hospitals that have tried to solve operational problems using this improvement approach. Design/Methodology/Approach: The service organization implemented Kaizen-Kata methodology in order to improve one operational problem-process in health care. A case-study approach was used in this research in order to understand the effects of the Kaizen-Kata methodology in solving problems in their operational procedures. Findings: Six specific drivers were identified when applying the Kaizen-Kata methodology. Furthermore, the impact on the levels of implementation of the Kaizen-Kata methodology in each of the improvement teams studied was also identified. Research Limitations: The main limitation of the research is that only three case-studies are presented thus it is not possible to generalize its results. Practical Implications (Where Possible): Other public hospitals can use this specific example as a working guide to solve the operational problems of health systems. Originality/Value: A methodology of continuous improvement in manufacturing was imported from the industry sector for application in an operational health care process. The Kaizen-Kata methodology contributed significantly to improving issues involving delays, customer complaints, process reworks and extra-cost, among other effects of operational problems.

Kaizen event approach: a case study in the packaging industry

Purpose

The purpose of this paper is twofold: first, a case study on the application of lean production principles in a manufacturing facility is presented to demonstrate the impact of frequent and systematic use of a Kaizen event on quality and delivery performance. Second, the detailed description and analysis of the Kaizen event and its impact are provided, including a comprehensive analysis of the role of Kaizen events on employee participation and motivation.

Design/methodology/approach

The study utilizes a Kaizen event’s case study data with the help of various waste detection and elimination tools and techniques. Changes in overall productivity along with potential long-term improvements in the delivery process are also analyzed and documented.

Findings

Pre- and post-quality measures are provided to demonstrate the results of the event on the production quality and on the performance of the overall manufacturing processes. Qualitative findings regarding performance measurements and the impact on the employees are reported.

Research limitations/implications

The Kaizen team applied analytical techniques to one manufacturing site in North America of a company that has a manufacturing presence in 20 different countries.

Originality/value

Kaizen studies involving packaging operations are quite limited. This study fills this gap by detailing the Kaizen event implementation in a packaging delivery and dispensing systems manufacturer for the cosmetic industry. The implementation of this Kaizen event is detailed along with the data and techniques utilized for process improvement. The study also reports findings regarding the impact of the Kaizen event on employee participation.