| sadtu.org.za | South Africa Democratic Teachers Union |
| psiru.org | Public Services International Research Unit (PSIRU) |
| observatoriosocial.org.br | Instituto Observatório Social |
| numsa.org.za | National Union of Metalworkers of South Africa NUMSA |
| num.org.za | National Union of Mineworkers |
| ditsela.org.za | Ditsela |
| dieese.org.br | Departamento Intersindical de Estatística e Estudos Sócio-Econômicos (Dieese |
| cosatu.org.za | Congress of South African Trade Unions |
| nehawu.org.za | National Education Health and Allied Workers - NEHAWU |
| labour.gov.za | Department of Labour |
South Africa , Gauteng , Johannesburg