How does an out-of-country payor's arrears get enforced if they have no assets in Canada?

Enforcing support against a payor who has left Canada entirely, with no remaining assets or income here, is significantly harder than enforcing against someone who has simply moved to another province, and the available tools depend heavily on where the payor has gone. Canada has arrangements with a number of other countries that allow a support order to be recognized and enforced abroad, similar in concept to the reciprocal arrangements between provinces, but not every country has such an arrangement, and even where one exists, foreign enforcement can be slower and more complex than domestic enforcement.

Where no effective international enforcement arrangement applies, or the payor has no assets anywhere reachable, practical collection becomes genuinely difficult, and this is a real limitation of the system that's worth understanding honestly rather than assuming enforcement will always eventually succeed. A recipient in this situation should get legal advice on whether an arrangement exists with the country the payor has moved to, what steps are required to use it, and what realistic expectations should be about timing and likely recovery, since the answer varies enormously depending on the destination country.