A Framework for Sustainable Lean Manufacturing Implementation in Small and Medium Enterprises

Thesis Abstract

Small and Medium Enterprises (SMEs) are critical drivers of economic growth and innovation; however, they often face significant challenges in implementing lean manufacturing practices sustainably due to resource constraints, lack of strategic frameworks, and limited access to expertise. This study aims to develop a comprehensive framework to guide SMEs in integrating sustainability principles into lean manufacturing implementation effectively. The specific objectives include identifying key enablers and barriers to sustainable lean practices in SMEs, examining the influence of organizational culture and leadership, and formulating a practical framework tailored to the unique operational contexts of SMEs. The research adopts a mixed-methods approach, combining qualitative and quantitative designs to ensure depth and breadth of insight. The quantitative component involves a survey of 250 SMEs operating within the manufacturing sector, selected through stratified random sampling across diverse regions. Data collection instruments consist of structured questionnaires measuring variables such as organizational culture, leadership styles, resource availability, and lean sustainability practices, with validity and reliability of instruments established through pilot testing and Cronbach’s alpha coefficients exceeding 0.85. The qualitative component includes semi-structured interviews with 20 industry experts, manufacturing managers, and lean practitioners, analyzed thematically to capture contextual nuances and experiential insights. Data analysis employs statistical techniques such as multiple regression analysis to determine the predictors of sustainable lean implementation, hierarchical cluster analysis to segment SMEs based on readiness levels, and thematic analysis for qualitative data to identify recurrent themes and patterns supporting the framework development. The findings are expected to reveal significant correlations between leadership commitment, organizational culture, resource allocation, and successful integration of sustainability into lean practices. The results will also identify common barriers such as limited financial resources, lack of technical expertise, and resistance to change among SME respondents. Based on the empirical evidence, the study will propose a structured conceptual framework incorporating critical enablers and strategies for SMEs to adopt lean manufacturing sustainably. This framework integrates elements from the Resource-Based View (RBV) theory and the Theory of Planned Behavior (TPB), emphasizing internal capabilities and behavioral intentions necessary for sustained lean practices. It provides a stepwise guide for SMEs to assess their readiness, develop tailored action plans, and embed sustainability into lean initiatives. This research contributes to knowledge by filling existing gaps related to contextualized frameworks for sustainable lean manufacturing in SMEs, an area predominantly dominated by large enterprise-focused models. It offers practical guidance for industry practitioners and policymakers seeking to promote sustainable manufacturing practices at the small and medium enterprise level. The study’s main conclusion underscores the importance of strategic leadership, organizational commitment, and resource mobilization as critical determinants of successful implementation. Recommendations include targeted capacity-building programs, development of accessible technical support mechanisms, and policy interventions to incentivize sustainable lean investments within SMEs. The study also suggests avenues for further research, such as longitudinal studies to assess framework adoption over time and comparative studies across different manufacturing sectors. Overall, the contribution provides a scientifically grounded, practically applicable model that enhances the efficiency, competitiveness, and environmental sustainability of SMEs engaged in lean manufacturing initiatives.