(1) Subject to sub-articles (1A) and (2), an employment contribution shall be credited to an insured person in respect of each complete contribution week from the beginning of the second-last contribution year preceding that in which his entry into insurance as an employed contributor occurred up to the date of such entry into insurance.

(1A) An employment contribution shall not be credited under sub-article (1) to a person whose entry into insurance occurred after he or she had attained pensionable age.

(2) An employment contribution shall not be credited under sub-article (1) to a person who becomes an insured person by virtue of section 9(1)(b), thereby becoming insured only for occupational injuries benefit only, but in any such case where the insured person subsequently becomes an employed contributor by virtue of section 9(1)(a), he shall have a contribution credited to him in respect of each complete contribution week from the beginning of the second-last contribution year preceding that in which he first becomes an employed contributor by virtue of section 9(1)(a) up to the date of his first becoming such an employed contributor.