Objective:The aim of this study was to investigate the multilevel association between workplace social capital and intention to leave among employees in health care settings in Japan.Methods:This study was a secondary data analysis of the cross-sectional data. A sample of 658 Japanese employees in health care settings with 17 facilities were recruited using a self-administered questionnaire. Multilevel linear regression analysis of intention to leave on unit-level workplace social capital (average score for each unit) was conducted.Results:Among 317 respondents from 49 units, after adjusting for demographic and work-related variables, both unit-level and individual-level workplace social capital were significantly negatively associated with intention to leave (P < 0.001).Conclusions:The current study found that there was a significant negative association between unit-level workplace social capital and intention to leave in the health care field.