This preliminary issue hearing was brought to determine whether the claimant was precluded from applying for post-104 week income replacement benefits, as the issue had already been dealt with as a result of a prior application to the Tribunal. An extensive hearing had previously been conducted and a final decision dealing with both pre and post-104 week IRBs was issued by the Tribunal. Adjudicator Boyce thus found that res judicata applied, and the claimant was precluded from proceeding with her claim for a post-104 week IRB.