He was the first director of the CRUSCAT Research Network on sociolinguistics of the Institut d'Estudis Catalans, the Catalan National Academy of Sciences, and is the current Director of the University Centre for Sociolinguistics and Communication at the Universitat de Barcelona (CUSC-UB). He is also the director of the Master's programme in Language Consultancy, Multilingual Language Management and Editorial Services at the UB's Catalan Philology Department. He has published a wide range of books and specialist articles in the areas of sociolinguistics, demolinguistics and language policy of Catalan and other medium-sized and minority languages.