This project aims to empower the researcher to develop novel knowledge and research skills to deconstruct the trade-off between labour and environmental sustainability, by analysing the implications of labour law with a critical societal problem: the global environmental crisis. This fellowship will develop a systemic and integrated approach to the legal analysis of forefront drivers of change in society, i.e. climate change and the need to promote a Just Transition to a low-carbon economy. By combining a variety of legal approaches and methods, it will contribute to advance and integrate the existing frontier research on labour and environmental sustainability, as well as to breach silos approaches to sustainable development and the correlated transitionary policies and legislations. This project will be implemented with a mix of traditional and innovative training activities (mostly training-through-research) based on individual and cooperative learning between the researcher and the supervisor. Paolo Tomassetti (the researcher) will carry out his fellowship at the Centre de droit social of Aix-Marseille University (the host institution), under the supervision of professor Alexis Bugada (the supervisor), for sixteen months. To ensure the overall quality of the project, in addition to three scientific publications, international conferences and a MOOC summer school, an Advisory Board will be established as a privileged audience of the project results and a multiplier of its dissemination through the scientific community.