From our payroll expert, Alan McEwen:
It really depends on the type of employee.
If this person is truly salaried, i.e. the pay doesn’t vary based on differences in time spent, and if the person is exempt from overtime requirements, i.e. a manager, then there is no requirement to pay anything.
At the other end of the scale is an hourly paid person or a person subject to employment standards overtime, if the travel is required by the employer for work purposes, then travel time is mostly considered paid working time