Appointed minister of the treasury in the first Di Rudini cabinet of 1891, he imprudently abolished the system of frequent clearings of banknotes between the state banks, a measure which facilitated the duplication of part of the paper currency and hastened the bank crisis of 1893 and the resulting Banca Romana scandal. A Parliamentary Commission that investigated the bank scandal concluded that former Prime Minister Francesco Crispi, Prime Minister Giovanni Giolitti, and Luzzatti, had been aware of the conditions of the Banca Romana but had held back that information. In 1896 he entered the second Di Rudini cabinet as minister of the treasury, and by timely legislation helped to save the bank of Naples from failure. Following the revolt and suppression of the Fasci Siciliani (1891-1894), Luzzatti introduced two measures of social legislation in 1898. The industrial workmen's compensation scheme from 1883 was made obligatory with the employer bearing all costs; and a voluntary fund for contributory disability and old age pensions was created. After his fall from office in June 1898, his principal achievement was the negotiation of the Franco-Italian commercial treaty, though, as deputy, journalist and professor, he continued to take an active part in all political and economic manifestations. He was again minister of the treasury from November 1903 to March 1905 in Giolitti's second administration, and for the third time from February to May 1906, under Sonnino's premiership. During the latter term of office he achieved the conversion of the Italian 5% debt (reduced to 4% by the tax) to 3 3/4 % to be eventually lowered to 3 1/2 %, an operation which other ministers had attempted without success; although the actual conversion was not completed until after the fall of the cabinet of which he formed part the merit is entirely his. In 1907 he was president of the co-operative congress at Cremona.

Answer this question "what was the other measure?" by extracting the answer from the text above.
a voluntary fund for contributory disability and old age pensions was created.