Subsequent to the election, Greene replaced Hollett as party leader and leader of the opposition.
In the 1962 provincial election, Greene succeeded in being personally re-elected and in increasing his party's number of seats to 7 based and increasing his party's share of the vote from 25% to 36% and in wiping out the breakaway United Newfoundland Party whose sole remaining MHA was defeated by a Tory candidate. However, the Tory gains were not enough to stop the Liberals from being re-elected with a commanding majority.[5]
He served as chair of the board of regents for Memorial University, as a director for Churchill Falls (Labrador) Corporation and as president of the Kiwanis Club of St. John's.[2]
On November 4, 2014, he died in St. John's at the age of 86.[1][8] Greene's father Joseph served in the Newfoundland House of Assembly from 1928 to 1932. His great uncle, Daniel Joseph Greene, was Premier of Newfoundland from 1894 to 1895.