This study aims to apprehend resources that affect level of happiness according to the types of work and leisure in single-person households, and suggests measures to effectively manage. Single-person households not only have different demographic characteristics such as gender and age, but also they have different resources, so there is a need to look at them simple as an individual subject, but as a complicated system from more integrated view. Thus, this study saw the single-person household as an organism existing in a complicated environment based on examining the previous researches. This work deigned the research model by applying the human ecological point of view consistently interacting with the environment. This study suggested an hypothesis under the assumption that the resources such as leisure, infrastructure, social activity and work-life balance support system will influence the level of happiness of single-person household.