On 12 August 1915, Ward and accepted a proposal by William Massey and the governing Reform Party to form a joint administration for World War I. Ward became deputy leader of the administration, also holding the Finance portfolio. Relations between Ward and Massey were not good – besides their political differences, Ward was an Irish Catholic, and Massey was an Irish Protestant. The administration ended on 21 August 1919 following a decision made by caucus to do so two months earlier.