Today’s supply chains entail numerous and serious issues, concerning the environment but also regarding people, including communities’ surrounding production activities, final consumers and workers. In order to assess those latter social and socio-economic impacts on people, Social life cycle assessment (S-LCA) is a tool being currently developed to complement E-LCA, which assesses potential environmental impacts along the life cycle of products and services. This PhD aims to address some of the outstanding methodological challenges faced by S-LCA, with the support of an application on
products from Belgian alternative food network (AFNs). The thesis focuses on three related main questions: i) what should S-LCA assess (topics, level of assessment, i.e. company’s practices, impacts on people, other) and ii) how to include impact pathways or cause-effect chains in the analysis, as it is done in E-LCA; iii) how should the assessment be carried out, so that it goes beyond a mere reporting? On the basis of three distinct states-of-the-art (on S-LCA frameworks, studies considering impact pathways and
S-LCA studies in the food sector), we put forward and apply specific methodological proposals that argue for i) the use of a participatory approach to select assessment criteria; ii) the use of an impact assessment approach that allows to understand company’s practices rather than their mere reporting, through an articulation of assessment criteria and indicators based on existing theories, including in social sciences. In this regard, the Global commodity chain approach that identify chain governance and value distribution among chain actors as potential stressors or root causes of social and socio-economic problems in supply chains, seems particularly relevant; iii) the use of a nested approach to sustainability in which also economic and governance aspects are taken into account, in addition to managerial and “social” aspects of supply chains, which are usually included. With this work we aim to contribute for S-
LCA to become an analytical tool contributing the improvement of main problems in supply chains, e.g. income, employment and working conditions, by analyzing their root causes. Our assessments of products traded under various alternative chains, including short food chains and a local Fair trade chain, reveal low income and poor employment conditions on farms. This rejects our assumption of better social sustainability performances of AFN products, when compared to those of mainstream chains.
Those poor performances would originate in the mechanisms used (e.g. unbalanced power relations, low commitment between VCAs, unfair prices), which are similar in mainstream chains. This would tend to confirm our assumption that chain governance and transaction modalities (i.e. business practices of chain actors) impact on socioeconomic conditions of workers in supply chains (or for the social sustainability of products), this is why we think it is of interest to consider those aspects in S-LCA. Also, other, more contextual, elements seem to come into play, such as labor regulations in force, that would encourage the use of non-standard forms of employment, and broader market context that influences AFNs quite strongly, including on prices. This is why it seems also important to work on mainstream food chains to improve overall product sustainability. Our research confirms the applicability and relevance of our methodological proposals, however further applications could be useful for further validation and methodological developments.