(1) Subject to this Act -
(a) every person who, being over the age of 16 years and under pensionable age, is employed in any of the employments specified in Part I of the First Schedule, not being an employment specified in Part II of that Schedule, shall, subject to paragraph (b), be an employed contributor for the purposes of this Act, and
(b) every person, irrespective of age, who is employed in insurable (occupational injuries) employment shall be an employed contributor and references in this Act to an employed contributor shall be construed accordingly, and
(c) every person becoming for the first time an employed contributor shall thereby become insured under this Act and shall thereafter continue throughout his life to be so insured.
(2) Regulations may provide for including among employed contributors persons employed in any of the employments specified in Part II of the First Schedule.
(3) Regulations may provide for -
(a) excluding particular employments or any classes o