Obligatory clitic expression, clitic omission, and the morphology-syntax interface Alex Alsina Pompeu Fabra University Proceedings of the LFG’20 Conference On-Line Miriam Butt, Ida Toivonen (Editors) 2020 CSLI Publications pages 5–25 http://csli-publications.stanford.edu/LFG/2020 Keywords: Clitics, reflexive clitic, clitics as morphology, Romance, Catalan, syntax- morphology interface, inflection. Alsina, Alex. 2020. Obligatory clitic expression, clitic omission, and the morphology- syntax interface. In Butt, Miriam, & Toivonen, Ida (Eds.), Proceedings of the LFG’20 Conference, On-Line, 5–25. Stanford, CA: CSLI Publications.