100.1(8)Notwithstanding subsection (2), where the Board has certified an employee organization as bargaining agent for a bargaining unit and no previous collective agreement or arbitral award has been executed or rendered in respect of the bargaining unit, this section applies to the employees included in the bargaining unit until one of the conditions expressed in paragraph 46(
a), (
b) or (
c), whichever occurs first, is met.