397. The board of appeal shall hear and dispose exclusively of(1) appeals brought under this Act;
(2) appeals brought under sections 37.3 and 193 of the Act respecting occupational health and safety (chapter S-2.1).
An appeal the object of which is the reduction or suspension of an indemnity under subparagraph e of paragraph 2 of section 142, an appeal brought under section 37.3 of the Act respecting occupational health and safety or an appeal brought under section 193 of the said Act, the object of which is the closing, in whole or in part, of a workplace or the exercise of the right of refusal, shall be heard and decided by preference.