Former Executive Secretaries Alicia Bárcena July 1 2008 - March 31 2022 José Luis Machinea December 30 2003 - June 1 2008 José Antonio Ocampo January 1 1998 - August 1 2003 Gert Rosenthal January 1 1988 - December 1 1997 Norberto González March 1 1985 - December 1 1987 Enrique V. Iglesias April 1 1972 - February 1 1985 Carlos Quintana January 1 1967 - March 1 1972 José Antonio Mayobre August 1 1963 - December 1 1966 Raúl Prebisch May 1 1950 - July 1 1963 Gustavo Martínez Cabañas December 1 1948 - April 1 1950