This methodological article explores issues related to having the ontological ground for phenomenological empirical research present throughout the research process. We discuss how ontology needs to be taken into consideration regarding the phenomena to be studied and how ontological aspects of phenomena need to be highlighted during various data collection and analysis procedures. Here, we discuss how philosophical works can be used in the context of specific research projects. In illustrating our statements, we present four empirical examples connected to the themes of life changes and learning processes with the purpose of exemplifying and discussing how general lifeworld ontology can be integrated as an active resource in empirical phenomenological research.