Yes. The eight-week length of time for a summer job might be ideal for a high school student or someone who is transitioning from high school to post-secondary, but most post-secondary breaks between the fall-winter semester and the subsequent fall semester are 16 weeks.
The typical length of a co-op work term is 16 weeks. What we sometimes find with the Canada summer jobs program is that employers will only be funded for eight weeks, so students will have to search for work either beforehand or after. Or they'll sometimes have to work unpaid for that employer for the weeks leading up to when the payment occurs so the work term can count.
Typically, co-op programs require work terms to be at least 12 weeks long in order for a student to earn academic credit. That eight-week funding length creates barriers for organizations that really struggle to have the funds to employ a student for the full summer.