That's a very good question. There are different types of restitution that can be ordered in the code, so the answer can depend on which type we're talking about.
If we're talking about section 738, the code provides that it's enforceable as a civil judgment if it's unpaid. The provinces are responsible for the enforcement, but, ultimately, if the order is not enforced, it falls to civil enforcement. There are some provinces that have programs to help victims.