Katsina State
Yar'Adua worked at Sambo Farms Ltd in Funtua, Katsina State, as its pioneer General Manager between 1983 and 1989. He served as a Board Member of Katsina State Farmers' Supply Company between 1984 and 1985, Member of the Governing Council of Katsina College of Arts, Science and Technology Zaria and Katsina Polytechnic between 1978 and 1983, Board Chairman of Katsina State Investment and Property Development Company between 1994 and 1996.