After the resignation of the Cabinet Bauer, which followed on the Kapp-Lüttwitz Putsch in March 1920, Müller accepted Ebert's offer of becoming chancellor and formed a new government. Under his leadership, the government suppressed the left-wing uprisings like that in the Ruhr area and urged the disarmament of paramilitary "Einwohnerwehren" demanded by the Allies. The newly created second "Sozialisierungskommission " (commission on socialization) admitted some members from the left-wing USPD because Müller felt that only that way would the workers be willing to accept the commission's decisions. In social policy, Müller's time as chancellor saw the passage of a number of progressive social reforms. A comprehensive war-disability system was established in May 1920, while the Law on the Employment of the Severely Disabled of April 1920 stipulated that all public and private employers with more than 20 employees were obligated to hire Germans disabled by accident or war and with at least a 50% reduction in their ability to work. The Basic School Law (passed on 28 April 1920) introduced a common four-year course in primary schools for all German children. Benefits for the unemployed were improved, with the maximum benefit for single males over the age of 21 increased from 5 to 8 marks in May 1920. In May 1920, maximum scales that were established way back in April 1919 were increased.