22. The number of apprentices in their last period of apprenticeship shall not be less than 25% of all the apprentices in the same trade employed by an employer. That percentage is based on 4 apprentices and, subsequently, on multiples thereof.
Where there is a shortage of apprentices in their last period, the employer shall use the services of apprentices in the preceding period in the same proportion.
For the purposes of the first paragraph, an apprentice electrician in his third period of apprenticeship is deemed to be in his last period of apprenticeship when he performs work pertaining to the specialty of security systems installer.
O.C. 313-93, s. 22; O.C. 1489-95, s. 3.