94(3)For the purposes of paragraph (1)(
a), no employee in the unit shall be counted as an employee unless he has been employed by the employer within the period of the three calendar months preceding the taking of such vote and, where the vote is taken on a working day otherwise than by mail, an employee who is absent from work on the day of the vote and who does not cast his ballot shall not be counted as an employee in determining the number of employees for the purposes of the paragraph.