The Labour and Social Security Law research group - GREDTiSS is a research group, at Pompeu Fabra University and is formed by Pompeu Fabra University academics Julia Lopez, Consuelo Chacartegui, Josep Fargas, Eusebi Colas, Alexandre de le Court and Sergio Canalda. The group has developed various research projects since 2000, analysing political changes and labour reforms, the judicialization of labour models, the impact of new technologies on the models of labour relationships, social protection policies in the economic crisis, the identification of the employer, the  de-commodification of  social rights and the boundaries between formal and informal work.

Recent work includes the study of international regulation from a comparative perspective: The notion of worker and segmentation of social rights and New governance institutions in the Work arena, both funded by the Spanish Ministry of Economy and Competitiveness. Currently the Group is developing a research project on Convergences and divergences of collective bargaining systems in the context of employment strategies (DER2015-69652-P), also funded by the same Ministry. The Group also organizes regular seminars with international academics and held the Labour Law Research Network Inaugural Conference, at Pompeu Fabra University in June 2013.

Publications in which members of the Group have been involved include: The Idea of Labour Law (2011), OUP, coordinated by Brian Langille and Guy Davidov; Rethinking Workplace Regulation: Beyond the Standard Contract of Employment(2013), coordinated by Harry Arthurs and Katherine Stone; and Resocialising Europe in a Time of Crisis (2014), CUP, coordinated by Nicola Countouris and Mark Freedland, amongst others. The members of the Group also teach on UPF Law and Industrial Relations degree programs and course include:  Employment Law; Collective Labour Law; Social Security Law; Labour Procedure; and International mobility of workers.