What it does
The Criminal Records Act 1991 (NSW) establishes a statutory mechanism to reduce the long-term collateral consequences of criminal convictions for relatively minor matters. At its core, the Act provides that after a defined crime-free period a conviction becomes "spent" (s 8(1)). Once spent, the person is not required to disclose it for any purpose (s 12(a)), questions about criminal history are taken to refer only to non-spent convictions (s 12(b)), and statutory references to convictions or to a person's character or fitness must disregard the spent conviction (s 12(c)).
Section 7(1) lists the convictions that are incapable of becoming spent: those attracting a prison sentence of more than 6 months (with important qualifications in s 7(4) excluding intensive correction orders and control orders), sexual offences (exhaustively listed by reference to historical and current provisions of the Crimes Act 1900 (NSW) and other statutes), convictions imposed on bodies corporate, and any convictions prescribed by regulation. All other convictions, regardless of whether imposed before or after commencement, and whether under NSW or interstate or overseas law (s 6(1)), are capable of becoming spent.
The crime-free period itself is defined differentially. For adult court convictions it is 10 consecutive years without conviction for an offence punishable by imprisonment and without being in prison or unlawfully at large (s 9(1)). For Children's Court orders under s 33 of the Children (Criminal Proceedings) Act 1987 (NSW) (other than those spent immediately) the period is 3 years with additional restrictions on control orders (s 10(1)). Traffic offences are quarantined in the calculation: a traffic conviction is disregarded when calculating the period for a non-traffic offence and vice versa, except for serious driving offences such as culpable driving, dangerous driving occasioning death or grievous bodily harm, and manslaughter arising from motor vehicles (s 11(4)).