An insurer's decision letter can feel final, especially when the time to appeal it expires. SGI v Wuttunee, 2026 SKCA 100, explains why that finality has limits under Saskatchewan's Automobile Accident Insurance Act.
Nathan Wuttunee had a long history of income replacement disputes with SGI. In 2011, SGI terminated benefits after deciding he could perform medium level work. He did not appeal that decision within the 90 day period. Years later, new medical evidence emerged and SGI issued another decision in 2020 that again relied on the earlier employability conclusion.
SGI argued that section 188, which describes its decisions as final and conclusive, permanently closed the earlier period. The Court of Appeal disagreed.
The Court held that section 188 does not turn an SGI decision into res judicata or issue estoppel. The statutory scheme allows a claimant to bring a fresh request when new information becomes available. If SGI responds with a new decision, that decision can generate a new appeal even where the subject overlaps with a period addressed in an older letter.
The Court also reinforced that an appeal under the Act is de novo. The parties are not confined to the evidence SGI had when it first made the administrative decision. Updated medical and vocational evidence can matter.
On the facts, the Court allowed Wuttunee's appeal for income replacement benefits from May 11, 2011 to August 7, 2014. It also rejected SGI's argument that a later seizure event should be treated as a new relapse because Wuttunee had never regained the ability to return to his construction work and suitable alternative employment had not been identified.
For claims administration, the decision is an important caution against treating an expired appeal window as absolute protection against later evidence. The statutory scheme still controls whether a fresh request and a fresh SGI decision reopen the issue.