Bauer, who rose to notice through his leadership of a white-collar trade union, served from 1908 to 1918 as chairman of the General Commission of Trade Unions for all of Germany. A member of the Reichstag, Bauer entered Prince Max of Baden's government in October 1918 as Minister of Labour, a role which he continued to hold in the government of Philipp Scheidemann after the war. When Scheidemann resigned in June 1919 to protest the Treaty of Versailles, Bauer became Chancellor, serving until March 1920, when he resigned shortly after the failure of the Kapp Putsch.
Bauer later served in the governments of Hermann Müller and Joseph Wirth.
| Preceded by: Philipp Scheidemann |
Chancellors of Germany | Succeeded by: Hermann Müller |