When it comes to legal claims for unjust enrichment made by common-law partners in Ontario, the applicable limitation periods can be somewhat complex and variable. The specific nature of the remedy sought determines the limitation period that applies, and there isn't a single, all-encompassing period that covers all unjust enrichment claims.

The Family Law Act, R.S.O. 1990, c. F.3, section 7(3), prescribes the limitation periods for bringing an application for equalization. These periods are the earliest of two years after the marriage is terminated by divorce or judgement of nullity, six years after the date of separation, or six months after the first spouse’s death. Neglecting these timeframes can result in forfeiture of the right to apply for equalization.