Recently, the concept of life event was coined in the literature to describe an event in a citizen’s life that would require at least one or in some cases a collection of public services from e-government service composition prospective. A system to provide the required intelligence that would be able to compose the basic e-services to build a composite service has recently become an area of debate with many solutions being proposed. This study building on prior publications is attempting to introduce and provide new technical guidelines for a new ontology that extends Ontology Web Language
for Services (OWL-S) as knowledgebase and intelligent actor for creating composite services to build a life event. This chapter proposes the life-event ontology that is a logical extension of OWL-S for implementation of e-service integration modelling framework proposed in prior publications.