The woman at the centre of a row over a privacy breach at ACC denies she threatened the corporation.
Bronwyn Pullar was mistakenly sent a spreadsheet containing details of thousands of ACC claims.
In its initial report on the incident, ACC claims that at a meeting in December last year, Ms Pullar threatened to go to the media about the privacy breach unless she was guaranteed a benefit for two years.
ACC has referred the matter to police.
In a statement on Monday, Ms Pullar says the assertions made by the corporation are false and she made no threats or demands.
Ms Pullar says the purpose of the meeting was to discuss her own claim and at the end of the meeting she raised a number of privacy and protocol breaches with ACC.
Michelle Boag, a former president of the National Party and long-time friend of Ms Pullar's, was at the meeting as her support person and backs her version of events.
PM seeks assurance
Prime Minister John Key has sought an assurance from the Minister for the Accident Compensation Corporation that the name of the woman at the centre of the privacy breach case was not leaked from her office.
Details of correspondence from Ms Boag to the Minister Judith Collins were reported in the media over the weekend.
The email gave Ms Boag's recollection of a meeting between ACC staff and Bronwyn Pullar.
Mr Key says Ms Collins has given him an assurance the email was not leaked from her office.
He says he has met Ms Pullar in the past, when she expressed frustration about her dealings with ACC.