The Government's plans for military-style "boot camps" for the worst young criminals will be launched today when Prime Minister John Key announces that the legislation will be introduced to Parliament.
The policy is a favourite of Mr Key's, who raised it in his state-of-the-nation speech a year ago, and the Bill will get its first reading later in the week as part of National's 100-day plan.
It includes the Fresh Start programme - lasting 12 months, including up to three months in boot camp - and the doubling of youth court sentences.
It will also extend the Youth Court's jurisdiction so it can deal with those aged 12 and 13 accused of serious offences.
Social Development Minister Paula Bennett has previously said some of the changes will not come into effect until next year, to allow time to set up the programmes, or have the space in residential centres to house those sentenced.
Other measures - including greater use by the Youth Court of orders for alcohol and drug rehabilitation, mentoring and parenting courses - would be available sooner as no law change was required.
The legislation is also expected to include "spotlight sentences" - where young offenders who do not comply with supervisory sentences are subject to monitoring with an ankle bracelet.
In his speech, Mr Key said spotlight sentences would be a court-ordered contract setting out the expectations on the offender such as curfews, an end to gang involvement, compliance with drug-treatment programmes and regular school attendance.
Mr Key said that to ensure compliance the court would "wield a big stick" - "intensive supervision and surveillance, including electronic monitoring of the young person using an ankle bracelet".
Act New Zealand's "three strikes-and-you're-out" legislation will also go before Parliament this week.
Under the policy criminals convicted of a serious offence for the third time will be sent to prison for a minimum of 25 years.
It is being introduced to Parliament by National as part of its support agreement with Act.
