The issue of care workers working for elder persons is becoming increasing important. Since their working conditions and environments have been uncomfortable and sometimes poor, many soon quit, leading to a shortage of care workers. The purpose of this article is to examine the causal process of turnover intention, focusing on factors leading to care worker burnout, and thereby to suggest remedial policies. We issue a challenge to build a new analytical model to investigate care worker intentions and behavior. In this study we conduct research covering 203 care workers in Fukuoka Prefecture and analyze the structure of burnout and the background of turnover behavior by personal credo/value, characters (Big Five), organizational commitment, the gap between expectations and reality, and role conflict with superiors, clients, and coworkers.