The postsyntactic component is modeled as a highly articulated system that accounts for what is shared and what exhibits variation across Basque dialects. The emphasis is on a principled ordering of postsyntactic operations based on their intrinsic properties, and on the relationship between representations in the Spellout component of grammar with other grammatical modules. The analyses in the book treat related phenomena in other languages and thereby have much to offer for a general morphology readership, as well as those interested in the syntax-morphology interface, the theory of Distributed Morphology, and Basque.