Social Security Tribunal of Canada

Participants in an appeal

When you file or participate in an appeal with the Social Security Tribunal (SST), different people are involved in the process.


Text version

Every appeal will have:

  • Decision maker

    • SST member – An impartial person who decides the outcome of the appeal.

  • Parties to an appeal – The people who can actively participate in the appeal and who may be directly impacted by the SST’s decision.

    • Appellant – The person who files an appeal.

    • Respondent – The person defending the decision being appealed.

An appeal may include:

  • Potential party to an appeal

    • Added party – Another person who could be impacted by the decision.

  • Representative – The person chosen by an appellant, a respondent or an added party to help them with their appeal.

  • Witness – Testifies at a hearing to support the argument or position of the appellant, the respondent or the added party.

  • Support person – Provides moral support or assistance to one of the parties.

  • Interpreter – Provides language or sign language interpretation services.

In very rare circumstances, it may also include: 

  • Intervener – A person or organization who has expertise on an issue of public interest and whose point of view would help the SST member decide an appeal

  • Observer – Attends a hearing simply to listen.

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