Furthermore, Imperial Prince Fushimi Sadanaru successively worked in and held positions in multiple organizations, such as a president of the Dai Nihon Nokai (Japanese National Agricultural and Farmers Association), The Dai Nihon Silk Foundation (Japanese National Silk Foundation), The Zaigo Gunjinkai (The Association of Reservists), RIKEN, Saiseikai (currently, Social Welfare Organization Saiseikai Imperial Gift Foundation Inc.) and others.
そのほか、大日本農会・大日本蚕糸会・在郷軍人会・理化学研究所・済生会等の総裁を歴任する。