Lean Management and Lean Six Sigma (LM/LSS) are improvement methodologies that have been utilized to achieve better performance outcomes at organizational and operational levels. Although there has been evidence of breakthrough improvement across diverse organizational settings, LM/LSS remains an early-stage improvement methodology in public sector organizations, specifically within local government organizations (LGOs). Some LGOs have benefited from LM/LSS and reported significant improvements, such as reducing process time by up to 90% and increasing financial savings by up to 57%. While the success of LM/LSS can lead to satisfactory outcomes, the risk of failure can also result in a tremendous waste of financial and non-financial resources. Evidence from the literature indicates that the failure to achieve the expected outcomes is likely due to the lack of attention paid to critical success factors (CSFs) that are crucial for LM/LSS success. Furthermore, research in this research area regarding characterizing and statistically examining the CSFs associated with LM/LSS in such organizational settings has been limited. Hence, the aim of this research is to provide a comprehensive investigation of the success factors for LM/LSS in LGOs.
The initial stage of this dissertation involved analyzing the scientific literature to identify and characterize the CSFs associated with LM/LSS in LGOs through a systematic literature review (SLR). This effort identified a total of 47 unique factors, which were grouped into 5 categories, including organization, process, workforce knowledge, communications, task design, and team design. The next stage of this investigation focused on identifying a more focused set of CSFs. This involved evaluating the strength of the effect (or importance) of the factors using two integrated approaches: meta-synthesis and expert assessment. This process concluded with a total of 29 factors being selected for the empirical field study. The final stage included designing and implementing an online survey questionnaire to solicit LGOs' experience on the presence of factors during the development and/or implementation of LM/LSS and their impact on social-technical system outcomes.
Once the survey was concluded, an exploratory factor analysis (EFA) was conducted to identify the underlying latent variables, followed by using a partial least square-structural equation model (PLS-SEM) to determine the significance of the factors on outcomes. The EFA identified three endogenous and five exogenous latent variables. The results of the PLS-SEM model identified four significant positive relationships. Based on the results from the structural paths, the antecedent Improvement Readiness (IR) and Change Awareness (CA) were significant and had a positive influence on Transformation Success (TS). For the outcome Deployment Success (DS), Sustainable Improvement Infrastructure (SII) was the only significant exogenous variable and had the highest positive impact among all significant predictor constructs. Furthermore, Measurement-Based Improvement (MBI) was significant and positively influenced Improvement Project Success (IPS).
Findings from this dissertation could serve as a foundation for researchers looking to further advance the maturity of this research area based on the evidence presented in this work. Additionally, this work could be used as guidelines for practitioners in developing implementation processes by considering the essential factors to maximize the success of LM/LSS implementation. Given the diversity of functional areas and processes within LGO contexts, it is also possible that other public sector organizations could benefit from these findings. / Doctor of Philosophy / Lean Management and Lean Six Sigma (LM/LSS) is an improvement methodology that is used by businesses and organizations to improve how they work and achieve better results. LM/LSS has been especially helpful in various organizations; however, the implementation of this improvement methodology has been limited by many challenges for public sector organizations, especially local government organizations (LGOs). The overall aim of this dissertation is to improve the success of LM/LSS implementation within the context of LGOs. More specifically, this dissertation systematically studied the critical success factors associated with LM/LSS success. Different research approaches, including research formulation, development, and testing techniques, were conducted to achieve the aim of this dissertation. Publications related to LM/LSS in LGOs have been rigorously analyzed to identify a comprehensive list of CSFs. To identify the most important factors, a meta-synthesis evaluation and expert survey assessment have been conducted. Following the refinement of the factors, a large-scale field study using a survey questionnaire has been designed and distributed to LGOs. Once the survey concluded, statistical methods that included Exploratory Factor Analysis (EFA) and Partial Least Squares-Structural Equation Modeling (PLS-SEM) were conducted. The former was used to identify the underlying latent variables, while the latter was conducted to examine the influence of the factors on social and technical outcomes. This dissertation could be used as a reference guideline helping practitioners to increase the success of LM/LSS implementation in LGOs. This dissertation can also guide scholars to potential research avenues that could advance this research area.
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/119179 |
| Date | 29 May 2024 |
| Creators | Al rezq, Mohammed Shjea |
| Contributors | Industrial and Systems Engineering, Van Aken, Eileen Morton, Hosseinichimeh, Niyousha, Datta, Jyotishka, Dickerson, Deborah Elspeth, Keathley, Heather R. |
| Publisher | Virginia Tech |
| Source Sets | Virginia Tech Theses and Dissertation |
| Language | English |
| Detected Language | English |
| Type | Dissertation |
| Format | ETD, application/pdf |
| Rights | In Copyright, http://rightsstatements.org/vocab/InC/1.0/ |
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