The thorny issue of work rest rules for OC Transpo workers will go before an arbitrator on Monday.

The Amalgamated Transit Union is unhappy with a pending federal order to restrict hours of work. Scheduling was the key issue during the eight-week transit strike from December until February.

There were sporadic reports Friday that a number of bus drivers protested the changes with a work-to-rule campaign that delayed stops.

Although the scheduling issue was supposed to be resolved through binding arbitration, federal Transport Minister John Baird says he's ready to step in and introduce regulations that would put limits on the number of hours worked by OC Transpo drivers.

New rules would limit drivers to 14 hours of work in one day with at least eight hours between shifts. Under the current system, drivers can work as much as 22 hours in one day.