The Auditor-General is expected to make a decision on whether to launch an inquiry into privacy breaches at ACC by Easter.
About 9000 ACC records relating to about 6700 individuals, including a number of clients with sensitive claims - injuries resulting from sexual abuse or sexual assault - were accidentally released to claimant Bronwyn Pullar last year.
A spiraling controversy over the release has seen former ACC minister Nick Smith over conflict of interest breaches in his handling of Ms Pullar's case.
The auditor general this morning revealed a request for an independent inquiry into ACC was being considered.
The Auditor-General's office said the investigation would require a significant investment of time and public funds.
