Canada Industrial Relations Board Regulations, 2012

44 The circumstances under which an application shall be made to the Board exercising its power of reconsideration under section 18 of the Code include the following:

• (a) the existence of facts that were not brought to the attention of the Board, that, had they been known before the Board rendered the decision or order under reconsideration, would likely have caused the Board to arrive at a different conclusion;

• (b) any error of law or policy that casts serious doubt on the interpretation of the Code by the Board;

• (c) a failure of the Board to respect a principle of natural justice; and

• (d) a decision made by a Registrar under section 3.