Unión General de Trabajadores | Unión Nacional de Trabajadores | Instituto del Fondo Nacional de la Vivienda para los Trabajadores | Confederación de Trabajadores de Venezuela | Central Latinoamericana de Trabajadores | Asociación de Trabajadores Inmigrantes Marroquíes en España |
He is affiliated to the Unión General de Trabajadores (Unión General de Trabajadores (UGT, General Workers' Union) of Catalonia since 1976, he has been the General Secretary (1978–1979) of its Local Union of Sant Feliu de Llobregat, Secretary of union policy (1979–1981), General Secretary (1981–1990) of the Baix Llobregat, Secretary of institutional policy of the National Secretariat of the UGT of Catalonia (1990–1997) and Defender of members' rights of the UGT (1997-2001).
The Cuban state newspaper Trabajadores blamed what it described as the "Miami mafia" for provoking the incident, alleging that the Cuban American National Foundation organised a public gathering to abuse Stevenson when he returned to Miami airport after his arrest.
Unified Trade Union Sub Federation of Peasant Workers of Ancoraimes - Túpak Katari (in Spanish: Sub Federación Sindical Única de Trabajadores Campesinos de Ancoraimes Túpak Katari) is a trade union in Ancoraimes, La Paz Department, Bolivia.