3.06. An employee may refuse to work:(1) more than 2 hours after regular daily working hours or more than 14 working hours per 24 hour period, whichever period is the shortest or;
(2) for an employee whose daily working hours are flexible or non-continuous, more than 12 working hours per 24 hour period;
(3) more than 50 working hours per week;
(4) if the employee was not informed at least 5 days in advance that the employee would be required to work, unless the nature of the duties requires the employee to remain available or that the employee’s services are required within the limits set out in paragraphs 1 and 2.