Sustainable procurement: comparing in-house and outsourcing implementation modes

Sustainable supply chain management practices can be particularly difficult to implement when the responsibility for sustainable procurement (SP) rests with buyers employed by a contractor, rather than an in-house procurement team. Yet there is no extant research that investigates the effect of outsourcing on SP. To address this research gap, this paper uses multi-case study data to explore the impact of outsourcing versus in-house implementation modes in the pursuit of SP. The findings suggest that each implementation mode has distinctive challenges and facilitators. However, by considering Transaction Cost Economics, results reveal that the advantage of outsourcing to professionals, with well-established SP expertise, brings information asymmetries in developing initial outsourcing contracts, which can lead to poorer sustainability performance than initially expected. Furthermore, when applying Principal Agency Theory, results suggest that sustainable performance can be improved in the long term through the effective design of well-constructed contractual relationships as SP maturity increases

Investigating Social Sustainability Practices in Global Supply Networks: A Fuzzy-set Qualitative Comparative Analysis

Given the paucity of research that examines the impact of Social Sustainability Practices (SSP) on performance outcomes, this study investigates the adoption and influence of these practices on firms' and suppliers’ overall performance, whilst also considering the level of complexity of operational environments of global supply networks. A Fuzzy-sets Qualitative Comparative Analysis (FsQCA) approach is adopted, based on eight primary case studies within the food, chemical and textile sectors, with data collected through semi-structured interviews conducted with representatives from each company. The research identified four key categories of SSP: informative, control, collaborative, and supply network redesign practices. The findings offer empirical support for the notion that SSP adoption yields improved performance outcomes for both the firm and its suppliers. These positive effects encompass enhanced firm profitability, increased supplier efficiency, and heightened supplier innovativeness. Nevertheless, the research uncovered that the relationship between adopting SSP and their impact on performance is not always straightforward. In certain instances, a combination of these practices may be necessary to achieve the desired performance level. In addition, a prudent consideration of the operational complexity present in global supply networks is crucial for informed decision-making pertaining to the selection and adoption of the most appropriate SSP. Driving profits in complex operational environments requires integrating both informative and collaborative practices, whilst tight control is necessary to improve supplier efficiency, regardless of the extent of complexity. Collaboration also emerged as a core factor of success in enhancing supplier innovation regarding social sustainability. Decision makers should also collaborate with external entities, particularly Non-Governmental-Organisations (NGOs) and industry associations/peers, to educate suppliers, thus creating an auspicious environment where suppliers are accountable for their own sustainability performance. This research carries significant practical implications. Managers should evaluate diverse combinations of SSP to confront global sustainability challenges through the utilization of customized strategies that can yield enhanced performance results. Expanding sustainability beyond primary suppliers can often be challenging in a global supply networks, given a firm's limited oversight, transparent knowledge and control over lower tier suppliers. Consequently, managers should seek to strengthen controls and oversight within the manageable segments of the supply network, all the while facilitating self-adaptation within the extended supply network with the adoption of informative and collaborative practices that extend reach, homogeneity, and improve overall governance