On Monday, the workers voted 583 to 142 in favour of the agreement.
Later in the evening, the school board also ratified the deal, ending a 16-day strike.
The pact will see workers get a 4.54 per cent increase that is retroactive to Sept. 2011.
The deal also addresses the issues of job protection, secretary workload and compensation for the second year.
The union represents more than 900 workers, including library staff, secretaries, teacher assistants and special-needs teacher assistants.