15.6. The Commission may, upon the recommendation of the committee established under section 15.7, exempt a person from holding a journeyman competency certificate, an occupation competency certificate or an apprentice competency certificate in one of the following cases:(1) an employer proves that the production or restoration of an original work of research or expression, or its integration into the architecture or interior and exterior spaces of a building or civil engineering structure can only be adequately carried out with the help of that person; or
(2) an employer proves that the work involving the use of old techniques can only be adequately carried out with the help of that person.
The exemption is valid for the duration of the work relating to the project referred to in the application and for the applicant employer.