Section 11(1)(a): amended, on 13 December 1968, by section 2(1)(a) of the Engineering Associates Amendment Act 1968 (1968 No 81).
Section 11(1)(b): amended, on 13 December 1968, by section 2(1)(b) of the Engineering Associates Amendment Act 1968 (1968 No 81).
Section 11(1)(c): replaced, on 10 December 1976, by section 2(1) of the Engineering Associates Amendment Act 1976 (1976 No 88).
Section 11(1)(c): amended, on 20 September 2007, by section 5(1)(a) of the Engineering Associates Amendment Act 2007 (2007 No 55).
Section 11(1)(c) proviso: repealed, on 20 September 2007, by section 5(1)(b) of the Engineering Associates Amendment Act 2007 (2007 No 55).
Section 11(2)(a): repealed, on 20 September 2007, by section 5(2) of the Engineering Associates Amendment Act 2007 (2007 No 55).
Section 11(2)(b): replaced, on 13 November 1964, by section 2 of the Engineering Associates Amendment Act 1964 (1964 No 52).
Section 11(5): amended, on 20 September 2007, by section 5(3) of the Engineering Associates Amendment Act 2007 (2007 No 55).