Section 160(1)(c): amended, on 1 December 2004, by section 54 of the Employment Relations Amendment Act (No 2) 2004 (2004 No 86).
Section 160(2A): inserted, on 1 April 2011, by section 29(1) of the Employment Relations Amendment Act 2010 (2010 No 125).
Section 160(4): added, on 1 April 2011, by section 29(2) of the Employment Relations Amendment Act 2010 (2010 No 125).
Section 160(4): amended, on 18 October 2016, by section 183(c) of the Senior Courts Act 2016 (2016 No 48).