Can a common-law partner share in a pension plan at separation in Ontario?

This depends on the type of pension and the governing legislation. For married couples in Ontario, the Family Law Act entitles a spouse to include pension value in the equalization of net family property. Common-law partners do not have the same statutory equalization right, so they generally cannot demand a pension split under the Family Law Act the way married spouses can.

However, some common-law partners may negotiate pension division as part of a separation agreement, and certain plans permit a voluntary split. Under the federal Pension Benefits Division Act, which applies to federal-employee pensions, a common-law partner who meets the one-year threshold can apply for a division. Ontario's Pension Benefits Act also has provisions recognizing common-law spouses in certain contexts, but the right to divide a pension at separation differs from the married-spouse framework.

The safest approach is to address pension sharing explicitly in a cohabitation agreement before the relationship ends, rather than trying to negotiate it after separation. If you are already separated, a family lawyer can review what remedies might be available based on your specific pension type and the contributions made.