Career
He was the first full-time general secretary of the union from 1943 until his retirement in 1964. He was an Ibibio, Calabar man, renowned for his dedication to duty and uprightness. The Esua-led commission organized the December 1964 election, which was mired in controversy.
Esua also conducted the 1965 Western Region election, which was violent and was disputed by the opposition United Party Grand Alliance.
A few days before these elections Esua acknowledged that his organisation could not guarantee a free and fair poll. The widespread electoral abuses may have been a factor in the success of the military coup of January 1966 in which Major General Johnson Aguiyi-Ironsi came to power.