Gerald Vernon-Jackson wants the lowest paid workers to be paid the living wage.
Portsmouth is now a Living Wage council, thanks to the Liberal Democrats.
When running the authority, the Liberal Democrats wanted to bring in the Living Wage this November for the poorest-paid members of staff so the Council could show other employers in the city how to tackle low pay.
Yet the new Conservative administration, voted in by Labour and UKIP, opposed that.
At the October 2014 Council meeting, Lib Dem councillors defeated a Conservative/Labour plan to stop the Wage coming in this month. UKIP only sat on their hands.
Now the Council's Employment Committee has given the formal go-ahead.
Gerald Vernon-Jackson, who brought in the idea when Council Leader said:
"This is a great day for tackling poverty pay in our city. The Council is one of the city's biggest employers, so should take the lead."
Darren Sanders, Lib Dem Parliamentary Candidate for Portsmouth North, said:
"More and more companies and councils are adopting the Living Wage, not least as it cuts the benefits bill for the Government. I am sad the Conservatives and their friends wanted to delay it and delighted we have stopped them."