In this chapter, the author discusses research philosophy and methodology for the study of three-job families. He discusses the problems of appropriate methods, including issues of validity and Grounded Theory. The author then describes the relevant parts of the actual research process. He also describes the procedure by which the 'family models' and 'household management rules' emerged as a part of the theory building process. The validity of a measure depends upon the instrument used in studying phenomena that is 'obviously' providing valid data. Grounded Theory is a scientific method when its procedures are carefully carried out. It is an approach by which empiricists maintain credibility. The research problem was to explore the ways in which household work contradictions affected everyday lives of three-job families, and who was responsible for managing these contradictions. The author uses intensive interviews to elicit from the respondents rich and detailed material on the processes of management of household work contradictions in their families.