8.4.When 30% or less of the total number of employees holding an occupation competency certificate issued for the region contemplated by an application for a certificate, are available at the time of application, the Commission may issue an apprentice competency certificate to every woman 16 years of age or older and in respect of whom an employer registered with the Commission files a workforce request, guarantees that woman employment for not less than 150 hours over a period not exceeding 3 months and furnishes to the Commission proof of the guarantee and proof that the woman has successfully completed a safety course required by the Safety Code for the Construction Industry (chapter S-2.1, r. 4).