In the UK the Universities have Student Ambassadors who are employed by the University to assist the Student Recruitment Team with recruitment events. These include things like open days, school and college visits, supervision of activities, tours, workshops and clearing.

The recruitment events vary and can run through the day, on an evening or on a weekend so the hours are very flexible and there is usually work available to fit any course timetable. There are opportunities also during the summer recess for summer schools.

I would have thought similar opportunities exist in Toronto. The wage is the bare minimum in the UK but the experience gained as an ambassador will stand him in good stead for future job opportunities. It may also help your stepson to become more outgoing and get some valuable life skills in dealing with the everyday problems that occur during these events.