He served as the mayor of Nikkō in Tochigi Prefecture from 1953 to 1969, overseeing its transition to an independent municipality in 1954.
[3] He was held liable for having a number of employees dismissed at the end of World War II.
[6] Following the death of the mayor of Nikkō, Toshijirō Itō,[a] Sasaki ran for and won the position in July 1953.
[1] He oversaw the transition of Nikkō into an independent municipality [ja], a process begun under Itō, which involved a merger with Okorogawa.
[1] During his time as mayor Sasaki focused on such health and social welfare issues as human waste treatment facilities, garbage incinerators,[1] and the development of Nikkō as an international cultural tourist destination.