On 29 March 1920 the Reichstag passed a Reich income-tax law, together with a law on corporate tax and a capital-yield tax. The Salary Reform Act, passed in April 1920, greatly improved the pay of civil servants. In May 1920, the Reich office for Labour Allocation was set up as the first Reich-wide institution "to allocate labor, administer unemployment insurance and generally manage labor concerns". The Reich Insurance Code of May 1920 provided war-wounded persons and dependent survivors with therapeutic treatment and social welfare which had the objective of reintegrating handicapped persons into working life. The Cripples' Welfare Act, passed that same month, made it a duty of the public welfare system to assist cripples under the age of 18 to obtain the capacity to earn an income. The Reich Homestead Act, passed in May 1920, sought to encourage homesteading as a means of helping economically vulnerable groups. The Reich Tenant Protection Order of 9 June 1920 sought to check evictions and "an immoderate increase of rental rates", authorising the Laender to set up tenancy offices, made up of tenants and owners’ representatives, with a judge as chairman to settle disputes concerning rents. As noted by Frieda Wunderlich, they were entitled "to supervise the fixing of rents for all farms". During Müller’s last year in office, a number of Orders were introduced that “confirmed and defined the protective measures taken in connection with the employment of women in certain work of a particularly dangerous or arduous nature,” which included work in glass-works, rolling mills, and iron foundries (through Orders of 26 March 1930).