Notary Public, appointed by the Supreme Court of Costa Rica, 1967. Attorney, Ministry of Labor and Social Security and of the General Comptroller of Costa Rica, 1962-1968. Member, Board of Directors and Chief of the Legal Department of the Instituto de Fomento y Asesoría Municipal (IFAM), 1970-1973. President and Coordinator, Unified System of Allowances of the Public Sector Law (Editor Committee, 1972-1974; Deputy, 1974-1978). President, Tax Authorities Committee and Head of the Liberación Nacional Party, 1974-1977. Vice President, Legislative Branch, 1975-1976. Ambassador, Costa Rica in Suiza and Permanent Representative of our country before the United Nations (ONU), Ginebra, Suiza, 1982-1987. President, International Organization for Migrations(OIM). Chief, Costa Rican Delegation during the Application for the Membership of Costa Rica before the General Commerce and Customs Agreement, 1982-1987. General Comptroller of Costa Rica, 1987-1992. Presidential Minister, 1994-1995.