Social welfare institutions that provide comprehensive social welfare services based on the community respond more sensitively to environmental changes than other types of social welfare organizations. As a result, there is a growing demand for not only improving the quality of services provided by social welfare institutions but also creating a safe organizational culture. In this regard, the purpose of this study is to propose a safety culture scale to examine the level of safety culture in social welfare institutions and provide evidence for its validity. To achieve the purpose of the study, a mail survey was conducted targeting social workers at social welfare institutions(community welfare centers, senior welfare centers, and welfare centers for people with disability) located in Busan Metropolitan City. The results of confirmatory factor analysis performed on the 1,260 returned questionnaires were as follows. First, the safety culture scale, which consists of 52 questions on 7 factors: safety activities, teamwork, education/training, policy/system, fair culture, leadership, and perception/attitude, was found to have secured construct validity. Second, the composite reliability of the safety culture scale was above .7, and the average variance extraction(AVE) value was above .5, showing that convergent validity was secured. The safety culture scale of social welfare institutions presented in this study can be used to monitor the level of safety culture of individual institutions, identify areas requiring improvement, and prepare alternatives. In addition, it is expected to provide meaningful information for follow-up researchers regarding the safety culture of social welfare institutions.