Mott was nominated for his work in international ecclesiastical and missionary movements for more than 40 years, promoting goodwill, international understanding and cooperation as the foundation of lasting peace.
He contributed to the establishment of the modern ecumenical movement, and also the formation of the World Council of Churches.
Mott was the former Secretary (1888-1915) of the International Committee of the Young Mens Christian Association (YMCA). He was Chairman of the Student Volunteer Movement for Foreign Missions (1915-28) and of the International Missionary Council from 1921.
The Nobel Committee received numerous endorsement letters, including from people who were not entitled to nominate. The campaign was probably initiated by the International Missionary Council