Figures released by the Ministry of Justice under the Official Information Act show one Auckland criminal has had the luxury of concealing their former crimes, despite having racked up a staggering 232 convictions -- the highest in the country.
The person's identity and type of offending can't be revealed.
Among the convictions concealed nationwide were assault on a child with a weapon, drink-driving causing death, burglary and indecent assault.
Convictions for tax fraud and bestiality were also hidden.
To be eligible for a clean slate, someone must have been conviction-free for the last seven years, never received a custodial sentence, and not be convicted of a "specified offence".
Specified crimes include sexual offending against children and the mentally impaired and can never be concealed.
Business New Zealand chief executive Phil O'Reilly said employers should always be able to see an applicant's history.
"If you've had a dishonesty offence and a small retailer is going to employ you behind the cash till, that's directly relevant, whether it's one or [232]," he said.
"For many small businesses that's their income, it's them and their house and the wellbeing of their family that's at stake."
However, Pathways Trust reintegration manager Carey Ewing said the clean slate law allowed former criminals to put their mistakes behind them.
"New Zealand can be a particularly unforgiving environment [and] I don't think any of us would like to live a life where we were solely judged upon the mistakes we made in the past."
Exaggerated media coverage of criminal offending had helped fuel Kiwis' beliefs that people didn't change and the longer offenders went to prison, the better, he said.
A clean slate gave someone opportunities that public opinion would not.
The clean slate process is automatic but only applied when a criminal history request is made to the Criminal Records Unit -- which processes about 450,000 requests a year.
While clean slate histories are hidden from most employers making an inquiry about a criminal record, convictions are still disclosed in applications for jobs as police, judges, and involving the care of children.
Criminal histories are also visible to law enforcement agencies and to overseas immigration authorities.
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