20(1)In subsection (1)(a) of section 26 (contracting-out of full contributions and benefits) for the words “the principal Act” there shall be substituted the words “the Contributions and Benefits Act”.
(2)The following subsection shall be inserted after that subsection—
“(1A)This Part of this Act shall also have effect, where an occupational pension scheme so provides or falls to be treated as so providing, for the purpose of making provision in relation—
(a)to invalidity allowance under section 34 of the Contributions and Benefits Act;
(b)to increases of Category A retirement pensions for invalidity under section 47 of that Act; and
(c)to increases of unemployability supplement under paragraph 3 of Schedule 7 to that Act.”.