TTC to implement mandatory COVID-19 vaccination for all employees by Sept. 13 Metrolinx, the provincial transportation agency that oversees GO Transit, UP Express and Presto, said about 81 per cent of employees who responded to an internal survey are fully vaccinated, with two per cent having their first shot.It said a mandatory vaccine policy will boost the number of staff and help recovery efforts as the more contagious variant Delta drives a fourth wave.“Many of our employees are already vaccinated but now we are facing a more contagious foe that could threaten the incredible progress we have made to control the spread,” Metrolinx CEO Phil Verster said.“Our goal was and continues to be to ensure our teams and our customers have the.