 After some years of work experience, he studied at the MIT Sloan School of Management (1971–72) in the Sloan Fellows program and earned a master's degree in management.Annan was fluent in English, French, Akan, and some Kru languages as well as other African languages.In 1962, Kofi Annan started working as a budget officer for the World Health Organization, an agency of the United Nations (UN).