Section 20 heading: amended, on 1 October 2008, by section 5(1) of the Injury Prevention, Rehabilitation, and Compensation Amendment Act 2008 (2008 No 46).
Section 20(2)(b): substituted, on 1 July 2005, by section 7(1) of the Injury Prevention, Rehabilitation, and Compensation Amendment Act (No 2) 2005 (2005 No 45).
Section 20(2)(c): substituted, on 1 July 2005, by section 7(2) of the Injury Prevention, Rehabilitation, and Compensation Amendment Act (No 2) 2005 (2005 No 45).
Section 20(2)(d): substituted, on 1 July 2005, by section 7(3) of the Injury Prevention, Rehabilitation, and Compensation Amendment Act (No 2) 2005 (2005 No 45).
Section 20(2)(f): substituted, on 1 July 2005, by section 7(4) of the Injury Prevention, Rehabilitation, and Compensation Amendment Act (No 2) 2005 (2005 No 45).
Section 20(2)(i): substituted, on 1 July 2005, by section 7(5) of the Injury Prevention, Rehabilitation, and Compensation Amendment Act (No 2) 2005 (2005 No 45).
Section 20(3)(b): amended, on 1 August 2008, by section 5(2) of the Injury Prevention, Rehabilitation, and Compensation Amendment Act 2008 (2008 No 46).