A discussion of the treatment of suffixes in Korean linguistic theory argues that, in view of recent clitic typology, Korean case markers and verbal suffixes are better analyzed in lexical rather than in syntactic terms. Evidence for this approach is found in phonological phenomena, morpheme and allomorph selection, and compounding. The most important argument posited is based in the morphologically determined phonological interactions between stems and these suffixes. Approaches to the interface of morphology and syntax in this instance in generalized phrase structure grammar and in lexical functional grammar are also proposed. (MSE)