For unmarried spouses, entitlement to spousal support arises under provincial family-law legislation, represented in this question by the Family Law Act.
The federal Divorce Act governs matters arising from the breakdown of a legally valid marriage, including spousal support between married spouses. It does not provide the general statutory basis for support claims between unmarried common-law partners.
Ontario's Family Law Act extends the support provisions to qualifying unmarried partners. Ontario guidance explains that a person may potentially qualify for spousal support where the couple lived together continuously for at least three years, or where they were in a relationship of some permanence and had a child together.
The Civil Marriage Act primarily concerns the legal capacity to marry and recognition of marriages; it is not the source of common-law spousal-support rights. The British North America Act—now principally known as the Constitution Act, 1867—allocates constitutional powers and likewise does not establish the substantive spousal-support entitlement described.
For FPII purposes, the key distinction is therefore jurisdictional: married spouses can rely on the federal Divorce Act in divorce proceedings, whereas unmarried spouses depend on applicable provincial or territorial family-law legislation.
FPII reference/topic: Family Law — common-law relationships; spousal support; Family Law Act; federal versus provincial jurisdiction.
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