Social work is work done for the welfare of the society. A social worker is a trained individual who represents the social well-being of society. According to the Australian Association of Social Workers, "The social work profession facilitates social change and development, social cohesion, and the empowerment and liberation of people. Principles of social justice, human rights, collective responsibility and respect for diversities are embedded in social work. Underpinned by theories of social work, social sciences, humanities and indigenous knowledges, social work engages people and structures to address life challenges and enhance well being."