Waterloo’s firefighters are joining their peers in Cambridge, Guelph and Kitchener in working 24-hour shifts.

City officials announce the move Thursday, saying it was the result of an arbitrator’s decision.

Firefighters in that city had been working four days of 14-hour night shifts, followed by four days of 10-hour day shifts, followed by a four-day break.

The new rotation will see them work seven 24-hour days during the course of a 28-day cycle.

It will take effect Dec. 31, and be re-evaluated after a two-year trial run.