Antecedents and Consequences of the Complementarities between Green Operations Management Practices: An Empirical Investigation in Oman Anwar Khamis Abdullah Al-Sheyadi, BSc, MSc. Thesis Submitted to the University of Nottingham for the Degree of Doctor of Philosophy June2014 Abstract ABSTRACT Green Operations Management (GOM) is becoming an increasingly important element in the strategic agenda of many enterprises. Its main aim is to enhance the ability of an enterprise to address stakeholder environmental concerns throughout the entire product life cycle (PLC). Earlier studies have recognized GOM as a useful tool to improve competitiveness (Zhanget al., 2008; Sarkis et al., 2010) and business performance (Kassinis and Vafeas, 2006; Jacobs et al., 2010; Zhu et al., 2012) Over the last few decades, the role of environmental management in achieving sustainable economic development is attracting growing global attention both theoretically and empirically. GOM is particularly important for enhancing the attractiveness of manufacturing companies of less developed countries such as Oman, to be selected as a partner in the global supply chain network of multi- national companies. However, there is a lack of integrative empirical studies to link and simultaneously examine the interrelationships between environmental drivers, practices and performance of manufacturing firms in general and within the context of less developed countries in particular. Through a review of the GOM and strategic environmental management literature, several unexplored areas were identified which are related to: a) The need for empirical studies to conceptualise various types of environmental practices as complementary to each other. Complementarity of GOM practices refers here to the combined sum of the effects of different sets of GOM practices being greater together than individually. b) The need for empirical studies to examine the influence of two distinct groups of stakeholders (i.e. market and non-market stakeholders) on the adoption of GOM practices. c) The need for empirical studies to examine whether the relationship between stakeholder pressures and the adoption of GOM practices is mediated by an organisation’s internal capabilities such as the development of environmental cross-functional collaboration (CFC). CFC is here defined as the extent ofintra-organisational collaboration, interaction and integration of various core functional areas within the firm on environmentally significant issues (Auh and Menguc, 2005). I Abstract d) The need for empirical studies investigating whether this mediated effect of CFC holds across firms regardless of their size, level of pollution intensity and degree of international orientation. e) The need for empirical studies examining whether environmental performance is considered as a mediator on the relationships between GOM practices and organisational savings and spending, where organisational savings and spending respectively reflect the saving advantages and increase in overall spending resulting from the adoption of GOM practices. This research is explanatory, deductive in nature, and underpinned mainly by a quantitative research design that was supplemented by document analysis of environmental strategies and performance and some qualitative semi-structured interviews with managers of five Omani manufacturing firms. To achieve the objectives of this research, an integrated conceptual framework was developed and set of hypotheses were proposed. The analysis of the survey data collected from 138 Omani manufacturing firms wasconducted using structural equation modelling. In this research, empirical support was found for most of the research hypotheses, generally revealing that pressures from both market and non-market stakeholders can influence the adoption of GOM practices and that adoption of GOM practices can influence organisational business benefits, spending and environmental performance. However, the relationship between the adoption of GOM practices and organisational business benefits was found to be further mediated by the level of environmental performance. Moreover, by integrating four distinct, yet interrelated sets, of environmental practices into a second order factor/construct called ‘collective GOM competency’, this research found empirical evidence for the superiority of the second order construct in explaining the relationships between the antecedents and consequences of the adoption of environmental practices. Furthermore, the mediation effect of CFC on the relationship between stakeholder pressures and the adoption of environmental practices was empirically confirmed. This mediation effect of CFC was found to be significantly stronger only for the case of highly internationalised firms compared to their counterparts. Hence, firm characteristics are not always considered as moderators on the relationship between CFC and the adoption of GOM practices. The findings of this study provide new directions for future research and new theoretical and practical insights in GOM practices in manufacturing firms. II Publications PUBLICATIONS Conference papers: Al Sheyadi , A.; Muyldermans, L.; Kauppi, K., 2014, " Collaborative competence in environmental practices adoption and its performance effects: A contingency perspective", at the21stEurOMA Conference, Palermo, Italy, June Al Sheyadi, A.; Muyldermans, L.; Kauppi, K., 2014, "A contingent view on effectiveness of cross-functional collaboration for environmental practices adoption", at the 25thPOMS Annual Conference, Atlanta, U.S.A., May Al Sheyadi, A., 2014 "Interdependency of Green Supply Chain Management Practices and its Performance Implications" accepted for presentation at the Midlands Regional Doctoral Colloquium 2014, University of Nottingham, Nottingham, April. Al Sheyadi, A.; Muyldermans, L.; Karjalainen, K., 2013, "The mediating role of cross-functional collaboration on the relationship between stakeholder pressures and firm's adoption of green practices”,at the20thEurOMA Conference, Dublin, Ireland, June. Al Sheyadi, A.; Muyldermans, L.; Karjalainen, K., 2013, "The complementarity of the environmental practices adoption and its performance implications", at 24thPOMS Annual Conference 2013, Denver, U.S.A., May. Al Sheyadi , A.; Muyldermans, L.; Karjalainen, K., 2012, "Stakeholder influences on environmental practices in the Omani manufacturing firms", at Middle Eastern & North African Studies Conference, Oxford University, Oxford,June. Al Sheyadi, A.; Muyldermans, L.; Karjalainen, K., 2012, "Environmental Management in Oman: pressures, practices and performance", at East Midlands Universities Postgraduate Research Students Conference, University of Nottingham, Nottingham, July. III Dedication DEDICATION I specially dedicate this thesis to… My parents for every thing My wife (S.Alshidi) and my sons (Moatasim and Moataz) for their understanding, continuous support and patience My beloved brothers and sisters for all their continuousencouragement IV Acknowledgment ACKNOWLEDGMENT All my praise, gratitude and deepest thanks are to Allah for giving me the ability, strength, knowledge and everything I need to successfully complete this long journey of my PhD. My sincere gratitude to my respected supervisors, Dr. Luc Muyldermans and Dr. Katri Kauppi for their continuous and invaluable support, guidance and encouragement throughout the course of my study. I will always be indebted to them with my deepest appreciation. I would like also to thank Professor Bart McCarty, Professor David Wastell, Professor Ram Ramanathan and Dr. James Tannock for enriching this research with their valuable comments and suggestions during the annual reviews. Thanks also to James Gaskin from Brigham Young University, Provo, Utah (U.S.A), who give me great advice during my data analysis, especially in solving several Structural Equation Modelingchallenges. Many thanks also to all Omani companies and managers, who participated in the data collection. I also address special thanks to all my friends at the University of Nottingham for their friendship, moral support and for all unforgettable moments, and to all administrative staff here at the University of Nottingham for providing administrativesupport. Finally, I would like to thank the Omani Ministry of Higher Education and the Omani Ministry of Environment and Climate Affairs for believing in the importance of this research. Thanks a lot to everyone who helped me to make this research possible. V Table of contents ABSTRACT........................................................................................I PUBLICATIONS.............................................................................III DEDICATION.................................................................................IV ACKNOWLEDGMENT..................................................................V Table of contents……………………………………………………..VI List of tables.....................................................................................IX List of figures....................................................................................X List of abbreviations........................................................................XI CHAPTER 1 INTRODUCTION………………………………………1 1.1 Research background………………………………………………………………….2 1.2 Research context……………………………………………………………………….8 1.2.1 The Sultanate of Oman: An overview…………………………………………….8 1.2.2 Environmental management in Oman…………………………..……………….10 1.2.3 The manufacturing sector in Oman……………………………………………..11 1.3 Research objectives ………………………………………………………………….13 1.4 Research methodology: an overview ………………………………………………15 1.5 Research key findings ………………………………………………………...15 1.6 Structure of the thesis ………………………………………………………...16 CHAPTER 2 LITERATURE REVIEW……………………………..18 2.1 Environmental management drivers……………………………………………..18 2.1.1 Stakeholder theory……………………………………………………..……..19 2.2 Resource based view and environmental management…………………………26 2.3 Selection and adoption of environmental practices……………………………..28 2.3.1 Internal and external environmental practices………………………………..29 2.4 Elements of GOM: Substitution or complement………………………………35 2.4.1 Complementarities of GOM practices………………………………………….36 2.5 Environmental management and firm performance……………………………..39 2.6 Linking drivers and practices of GOM: Mediation of organizational internal capabilities…………………………………………………………………………43 2.6.1 Cross-functional collaboration as a critical environmental capability................43 2.6.2 Contingency perspective on the effectiveness of CFC for GOM........................46 2.7 Summary of the literature review …………………………………………………50 2.8 Research gaps in the literature and their significance……………………………...51 Chapter 3 RESEARCH CONCEPTUAL FRAMEWORK…………….58 3.1 Research questions and objectives......................................................................58 3.3 Hypothesis development…………………………………………………………...65 VI Table of contents 3.3.1 Conceptualizing the complementarities between GOM practices............................65 3.3.2 Linking stakeholder pressures and GOM practices.............................................66 3.3.3 Linking GOM practices and performance...........................................................67 3.3.4 Model mediator...................................................................................................72 3.3.5 Moderating effects of firm characteristics on the effectiveness of CFC.............73 CHAPTER 4 RESEARCH METHODOLOGY……………………….78 4.1 Research paradigm…………………………………………………………………78 4.1.1 Research design...................................................................................................83 4.1.2 Rationale for the adopted research methods........................................................87 4.2. Survey development and data collection…………………………………………..89 4.2.1 An overview of survey techniques......................................................................91 4.2.2 Operationalization of the study constructs..........................................................95 4.2.3 Summary of the measurement variables:..........................................................106 4.2.4 Survey development..........................................................................................107 4.2.5 Data collection..................................................................................................115 4.3 Data analysis techniques: Structural equation modelling………………………..120 4.4 Conclusion of methodology chapter……………………………………………..124 CHAPTER 5 RESULTS OF DATA ANALYSIS…………………….126 5.1 Total response …………………………………………………………………..126 5.2 Data entry …………………………………………………………………..127 5.3 Data cleaning …………………………………………………………………..128 5.3.1 Handling missing data and outliers...................................................................128 5.3.2 Handling common method bias and non-response bias....................................130 5.4 Preliminary data analysis………………………………………………………….136 5.4.1 Distribution of responses...................................................................................137 5.4.2 Sample and respondents characteristics............................................................138 5.5 Assessment of the measurement quality………………………………………….140 5.5.1 Reliability testing..............................................................................................142 5.5.2 Validity testing..................................................................................................142 5.5.3 Factor analysis...................................................................................................143 5.6 Assessment of the structural model and hypothesis testing………………………158 5.6.1 Conceptualization of the environmental management model...........................160 5.6.2 Examining the direct effect...............................................................................163 5.6.3 Examining the mediation effects.......................................................................167 5.6.4 Examining the moderated mediation effects.....................................................176 5.7 Conclusion………………………………………………………………………..193 CHAPTER 6 EMPIRICAL CASE STUDY ANALYSIS……………..195 6.1 Introduction…………………………………………………………………………...195 VII Table of contents 6.2 Description of case companies and data collection processes…………………...195 6.3 Analysis of the case studies findings…………………………………………….199 6.3.1 Perceived drivers ofadopting GOM practices………………………………200 6.3.2 Adoption of GOM practices…………………………………………………202 6.3.3 Performance implications of adopting GOM practices……………………...212 6.3.4 Role of cross-functional collaboration………………………………………...218 6.4 Conclusion………………………………………………………………………..224 CHAPTER 7 DISCUSSION………………….………………...………225 7.1 Introduction………………………………………………………………………225 7.2 Research objectives and model development……………………………………225 7.3 Interpretation of the results………………………………………………………229 7.3.1 Conceptualization of the GOM model..............................................................229 7.3.2 Stakeholder pressures and GOM practices........................................................231 7.3.3 Influence of the collective GOM competency on performance........................234 7.3.4 Mediation of cross-functional collaboration..........................................................238 7.3.5 Moderation of organizational characteristics....................................................241 7.4 Conclusion………………………………………………………………………..244 CHAPTER 8 CONCLUSION…………………………………………245 8.1 Introduction…………………………………………………………………….245 8.2 Research Contributions…………………………………………………………245 8.2.1 Theoretical implications....................................................................................245 8.2.2 Practical contributions.......................................................................................251 8.3 Limitations and future research…………………………………………………..263 8.4 Conclusion……………..…………………………………………………………269 References…………………………………………………………………..270 Appendices…………………………………………………………………288 VIII List of tables List oftables Table 1.1 Number of manufacturing establishments as per industrial activities….….12 Table 2.1 Classifications of environmental stakeholder pressures in previous studies…………………………………………………………………………………22 Table 2.2 Categorizations (elements) of environmental management strategies in the literature…………………………...………………………………………………….29 Table 2.3 Mixed results of previous empirical studies……………………...………..41 Table 4.1.1 Major paradigms of research in social sciences…………………..…….81 Table 4.1.2 Research methods and their philosophical bases…………………….…82 Table 4.1.3 Summary of the preliminary meetings conducted at the early stages of the research…………………………………………………………………….………..86 Table 4.2.1 Previous relevant environmental studies……………………….……....93 Table 4.2.2 Items to measure the environmental pressures constructs…………..….97 Table 4.2.3 Items to measure the eco-design construct…………………………….98 Table 4.2.4 Items to measure the source reduction construct………………………99 Table 4.2.5 Items to measure the environmental management systems construct…100 Table 4.2.6 Items to measure the external environmental management construct…100 Table 4.2.7 Items to measure the environmental and economic performance constructs……………………………………………………………………………103 Table 4.2.8 Items to measure the CFC for environmental management construct…103 Table 4.2.9 Items to measure the firm's international orientation construct………..106 Table 4.2.10 Summary of the measurement items and their labels………………....106 Table 5.1.1 Response rates obtained by some previous relevant environmental studies………………………………………………………………………………127 Table 5.3.1 List of dummy items used to check for the existence of common methods bias………………………………………………………………………………….133 Table 6.10 Classifications of respondents’ positions…………………………..133 Table 6.11 ANOVA test results of respondent’s position affecting the factor- composite score of different constructs…………………………………..……133 Table 5.3.4Total variance explained………………………………………………135 Table 5.4.1Distribution of responses for each measurement item…………….…..138 Table 5.4.2 Sample characteristics…………………………………………………139 Table 5.4.3 Respondents characteristics…………………………………………...140 Table 5.5.1 KMO and Bartlett's data suitability tests………………….…………..145 Table 5.5.2 EFA results and reliability analysis for each construct……….………146 Table 5.5.3 Examples of model fit indices…………………………………….…..149 IX
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