 | Commission Vice-chairperson Working Group on Specific Issues Related to the work of the African Commission Working Group Chairperson Advisory Committee on Budgetary and Staff Matters Working Group Chairperson Working Group on Economic, Social and Cultural Rights Working Group Chairperson Special Rapporteur on Rights of Women
| 2001 — 2013 |
| Advisory Committee on Budgetary and Staff Matters Working Group Chairperson Committee for the Prevention of Torture in Africa Working Group Member Working Group on Indigenous Populations/Communities in Africa Working Group Chairperson Advisory Committee on Budgetary and Staff Matters Working Group Member Working Group on Indigenous Populations/Communities in Africa Working Group Member
| 2005 — 2011 |
| Commission Vice-chairperson Commission Chairperson
| 1987 — 2011 |
 | Working Group on Death Penalty and Extra-Judicial, Summary or Arbitrary killings in Africa Working Group Member Commission Vice-chairperson Working Group on Extractive Industries, Environment and Human Rights Violations Working Group Chairperson Working Group on Indigenous Populations/Communities in Africa Working Group Member Special Rapporteur on Prisons and Conditions of Detention
| 2005 — 2011 |
 | Working Group on Indigenous Populations/Communities in Africa Working Group Chairperson Working Group on Fair Trial Working Group Chairperson Commission Chairperson Commission Vice-chairperson Working Group on Indigenous Populations/Communities in Africa Working Group Member
| 1995 — 2011 |
| Special Rapporteur on Refugees, Asylum Seekers, Migrants and Internally Displaced Persons
| 2009 — 2011 |
 | Commission Chairperson Working Group Chairperson Working Group on Economic, Social and Cultural Rights Working Group Member Committee for the Prevention of Torture in Africa Working Group Chairperson
| 2003 — 2011 |
 | Commission Chairperson
| 2001 — 2009 |
| Working Group on Economic, Social and Cultural Rights Working Group Member Working Group on Death Penalty and Extra-Judicial, Summary or Arbitrary killings in Africa Working Group Chairperson Commission Vice-chairperson
| 2001 — 2009 |
| Special Rapporteur on Refugees, Asylum Seekers, Migrants and Internally Displaced Persons Working Group on Death Penalty and Extra-Judicial, Summary or Arbitrary killings in Africa Working Group Member
| 2003 — 2009 |
| Special Rapporteur on Human Rights Defenders Commission Vice-chairperson
| 1999 — 2007 |
| Working Group on Economic, Social and Cultural Rights Working Group Member Working Group on Specific Issues Related to the work of the African Commission Working Group Member
| 2003 — 2007 |
| Working Group on Indigenous Populations/Communities in Africa Working Group Member Special Rapporteur on Freedom of Expression and Access to Information Working Group on Indigenous Populations/Communities in Africa Working Group Chairperson
| 1999 — 2007 |
| Special Rapporteur on Prisons and Conditions of Detention
| 1999 — 2005 |
| Special Rapporteur on Prisons and Conditions of Detention Commission Chairperson Commission Vice-chairperson
| 1993 — 2005 |
| Special Rapporteur on Extra-judicial, Summary or Arbitrary Execution Commission Vice-chairperson
| 1992 — 2003 |
| —
| 1997 — 2003 |
| Commission Chairperson
| 1987 — 2001 |
| Commission Vice-chairperson Special Rapporteur on Rights of Women
| 1995 — 2001 |
| —
| 1999 — 2001 |
| Commission Chairperson
| 1987 — 2001 |
| Commission Vice-chairperson
| 1993 — 2000 |
| —
| 1993 — 1999 |
| —
| 1987 — 1998 |
| Commission Chairperson
| 1989 — 1997 |
| —
| 1987 — 1997 |
| Commission Vice-chairperson
| 1987 — 1995 |
| —
| 1987 — 1993 |
| Commission Vice-chairperson
| 1987 — 1993 |
| Commission Vice-chairperson
| 1987 — 1993 |
| —
| 1987 — 1993 |
| —
| 1987 — 1989 |