Section 23: substituted, on 19 December 1989, by section 3 of the State Sector Amendment Act (No 2) 1989 (1989 No 136).
Section 23(1A): inserted, on 31 October 2018, by section 12 of the State Sector and Crown Entities Reform Act 2018 (2018 No 31).
Section 23(3)(c): amended, on 18 July 2013, by section 16 of the State Sector Amendment Act 2013 (2013 No 49).
Section 23(3)(d): repealed, on 25 January 2005, by section 19(2) of the State Sector Amendment Act (No 2) 2004 (2004 No 114).
Section 23(3)(e): repealed, on 25 January 2005, by section 19(2) of the State Sector Amendment Act (No 2) 2004 (2004 No 114).