Vincent was reelected to the legislature in November 1919 on the Republican Federation list. He also became municipal councilor and mayor of
Le Quesnoy in 1919, holding this office until 1940. He was appointed
Minister of Labor and Social Assurance in the seventh cabinet of
Aristide Briand, holding office from 16 January 1921 to 15 January 1922. In March 1921 he presented France's first social insurance bill, largely the work of his predecessor
Paul Jourdain. The "Vincent bill", as it was called, proposed insurance that covered risks of illness, maternity, death, disability and old age, and that would be obligatory for all workers in commerce, industry and agriculture, and voluntary for small business owners, artisans and peasant smallholders. The bill was not passed, but provided the basis for future proposals. On 16 October 1921 Vincent was elected to the general council of Nord representing
Berlaimont. He was reelected in 1922 and 1928, but was defeated in 1934. He was
Minister of Labor and Hygiene in the third cabinet of
Raymond Poincaré from 29 March 1924 to 9 June 1924. Vincent was reelected in the elections of 11 May 1924. On 29 October 1925 he was appointed
Minister of Commerce and Industry in the third Painlevé cabinet. He retained this post until 23 June 1926 in the eight and ninth Briand cabinets. In the tenth Briand cabinet he was
Minister of Public Works from 23 June 1929 to 19 July 1926. Vincent was elected senator in a byelection on 29 May 1927, and was reelected on 16 October 1932. In the senate he sat with the Radical Democratic Left and Radical Socialist group. During
World War II (1939–45), on 10 July 1940 Daniel-Vincent voted for the constitutional change that gave full power to the government of Marshal
Philippe Pétain. Daniel Vincent died in Paris on 3 May 1946. ==Publications==