Palauan (Austronesian) displays a unique pattern of object-marking. In the perfective aspect, object-agreement morphology is realized on the verb. In the imperfective, no agreement morphology is realized and an independent pattern of Differential Object Marking arises (e.g. Josephs 1975, Georgopoulos 1991, Woolford 2000, Nuger 2007 et seq.). In this talk, I discuss the initial findings of an ongoing research project, concerned with how to best model the attested aspectual split and to understand what, if anything, the restriction of DOM to imperfective clauses tells us about the proper modeling of that phenomenon more generally.