In 1752, he passed high grade examination (Jeongsi) and served for the government as the Jeongeon (정언; 正言), and became Gyori (교리; 校理), administrator of Dongnae and Amhaengeosa (Secret governmental inspectors) of Chungcheong province in 1757.

[3] In 1760, he suggested to established three Jochang (조창, 漕倉, storehouse) in southern Gyeongsang province, which contributed to the economic development of the region.

This diplomatic mission functioned to the advantage of both the Japanese and the Koreans as a channel for developing a political foundation for bilateral trade.

[3] After his return to court, Jo Eom was appointed Daesagan (대사간; 大司諫) and Ijo panseo.

[3] Jo's writings and memoirs are preserved in the Haesa ilgi (Diary of Overseas Mission, 해사일기, 海槎日記) and Haehaeng chongjae (해행총재; 海行摠載).