Windsor mayor Eddie Francis says a provincial arbitrator has awarded firefighters a 15 per cent wage increase.
It will be retroactive from 2010 and extend until 2014. Francis says the cost to the city is about $12.8 million.
Firefighters will now also work a 42-hour work week, instead on a 48-hour week.
Francis says 31 new firefighters may have to be hired.
He says the arbitration system is broken.