As social justice is an essential social work concept, this study examined the factors that influenced the attitudes of social workers in Taiwan toward social justice through an analysis of Social Justice Scale-TW (SJS-TW) questionnaires conducted on a sample of 276 social workers. It was found that years of work experience, human rights training, and past participation in social protests were important moderating factors of supporting social justice. It was concluded that including a human rights–based approach in social work education has the potential to increase the social workers’ knowledge of and actions in support of social justice.