8. The Commission shall renew, upon application, a competency certificate which could not be renewed under section 7 where its holder proves that, during the period contemplated,(1) he has continued performing work authorized by his competency certificate in the construction industry outside Québec;
(2) he has worked in the construction industry as an employer or as the designated representative of an employer under section 19.1 of the Act and he personally has performed work authorized by his apprentice competency certificate or his journeyman competency certificate;
(3) he has worked in the construction industry as an employer or as the designated representative of an employer under section 19.1 of the Act, provided he held an occupation competency certificate;
(4) he was unable to perform work authorized by his competency certificate because of an illness, an accident, protective re-assignment, or maternity, paternity or parental leave, or because of the birth or adoption of a child or union or management activities in the construction industry.