Canada's highest court has dismissed the appeal of a Saskatchewan widow who's been fighting two decades to receive her late husband's pension.

The Supreme Court ruled on Laura Ravndahl's case on Thursday.

Ravndahl's husband was killed in a work-related accident in November 1975. She received his pension for a number of years, but was cut off when she remarried in 1984.

That was common practice at the time, and although the law was later changed, Ravndahl's pension was not reinstated.

Ten years ago, the Saskatchewan government offered an $80,000 lump-sum payment to widows in her situation, but Ravndahl didn't take the money.

Instead, she sued the Saskatchewan government and the Workers Compensation Board.

In June 2007, the Saskatchewan Court of Appeal ruled against her, saying she took too long to file her lawsuit.

The Supreme Court was asked to decide whether Ravndahl's rights under the Canadian Charter of Rights and Freedoms had been breached. The court, which heard arguments on the case last month, decided they had not been breached.