The Human Rights and Equal Opportunity Commission (HREOC) is responsible for administering the Age Discrimination Act 2004. Information about your rights and responsibilities under this act can be found on the HREOC All about age discrimination site: http://www.hreoc.gov.au/age/index.html
The Equal Opportunity Commission of South Australia (EOC) is responsible for administering the South Australian Equal Opportunity Act 1984. Under this act is it unlawful to discriminate on the grounds of age. A fact sheet on this can be found on the EOC site: http://www.eoc.sa.gov.au/default.jsp?xcid=1636