Yeo is a retired lecturer of the National Institute of Education and Nanyang Technological University.

For this work, he received the Bintang Bakti Masyarakat (Public Service Star) in 1991, and was awarded the S.E.A.

His venture into novel writing resulted in a sole book: The Adventures of Holden Heng (1986) about the sexual education of its anti-hero.

(1974), One Year Back Home (1980), Second Chance (1988), The Eye of History (1991), Changi (1996) and Your Bed is Your Coffin.

Yeo has also edited collections of short fiction, plays and textbooks, a memoir, as well as the libretto for an opera, Fences (2012).