[9][10] During his tenure, Omotoso "demonstrated unwavering dedication to ANA's mission of fostering a dynamic community of creative writers, founded on the principles of free expression and ethical integrity.
His major themes include interracial marriage, comic aspects of the Biafran-Nigerian conflict, and the human condition—as exemplified in friendship between the Yoruba and the Igbo and in relationships between children and parents.
Omotoso then returned to Nigeria, continuing his academic career teaching at Elizade University, Ilara-Mokin, Ondo State, until his retirement in 2017.
[15] From 2013 to 2016, he was a patron of the Etisalat Prize for Literature (alongside Ama Ata Aidoo, Dele Olojede, Ellah Allfrey, Margaret Busby and Zakes Mda).
Recalling taking on Omotoso's first two books for the Heinemann African Writers Series, publisher James Currey said: "His writing had style and elegance and gave one hopes that here was a new voice from Africa.
Among Omotoso's best known works are Just Before Dawn (1988), characterised as a "masterpiece of the hybrid genre of 'faction'", and Season of Migration to the South (1994), "a searing political and intellectual reminiscence on the historic emergence of the Nigerian Diaspora in Africa and the rest of the world.
"[28] Other titles considered significant include The Edifice and The Combat, and Toyin Falola observes: "Each piece of his work thoroughly analyses the human condition by digging into topics such as personal identity, cultural dynamics, and the intricacies inherent in post-colonial African society.