The Weimar Republic (1918-33) saw a further expansion of social welfare programs. In 1920 war victims' benefits were added to the social welfare system. In 1922 the Youth Welfare Act was passed, which today continues to serve as the basic vehicle for all youth-related programs. Unemployment relief was consolidated in 1923 into a regular assistance program, financed by employees and employers. The same year, the 1913 agreement between doctors and sickness funds about who could treat sickness-funds patients was integrated into the National Insurance Code. Also in 1923, a national law on miners created a single agency for the administration of social insurance programs for miners; before the law went into effect, 110 separate associations had administered the program. In 1924 a modern public assistance program replaced the poor relief legislation of 1870, and in 1925 the accident insurance program was reformed, allowing occupational diseases to become insurable risks. In 1927 a national unemployment insurance program was also established. These gains in social insurance and assistance programs were threatened by the Great Depression of the early 1930s, however. Reduced wages meant smaller contributions to social insurance and assistance programs, all of which were soon on the brink of bankruptcy.