The study attempted to explore in depth the process of changing the job maintenance experience of long term disabled activity supporters through grounded theory. To this end, 10 long term disabled activity supporters working at regional self-support centers located in Seoul and small and medium sized cities were sampled and conducted in-depth interviews. As a result of the study, 106 concepts, 50 sub concepts, and 25 categories were derived from open coding. The process of coping and individual changes were known as factors that support disabled activities maintain their jobs for a long time, and the process of coping was derived as “change seeking stage,” “real difficulties and conflicts,” “tough labor,” “creative composure,” and “the process of confirming their existence” in six stages. As such, job maintenance experience as a factor of long term service of activity supporters for the disabled is worth being used in psychological support and program development of activity supporters by revealing individual changes according to characteristics and individual characteristics over time. Based on these results, the implications of this study and the importance of institutional improvement were discussed, and limitations and subsequent studies were suggested.