Former HSU boss Michael Williamson arrives at Maroubra police station for questioning yesterday.

Michael Williamson, who is facing more charges. Photo: Ben Rushton

Former Health Services Union boss Michael Williamson has been hit with a raft of extra charges including money laundering and dealing in the proceeds of crime, which attract a potential 15-year jail term.

Mr Williamson, who appeared in Waverley Local Court on Wednesday morning, was also charged with 27 counts of cheat and defraud.

The new charges are believed to relate to allegations of fraud relating to Canme, a company registered to Mr Williamson’s wife Julieanne. Canme charged the union hundreds of thousands of dollars for archiving work that an internal inquiry by barrister Ian Temby QC and accountant Ian Robertson suggested was never done.

Mr Williamson, who was accompanied by his brother Darren and his solicitor Vivian Evans, was in court only briefly.

Outside court Detective Superintendent Colin Dyson, head of the Cyber and Fraud Squad, said that Mr Williamson had been charged with 27 cheat and defraud offences totalling around $600,000 of union funds. Each charge attracts a maximum penalty of 10 years.

Of that amount, $400,000 was allegedly laundered by Mr Williamson who was aware that the funds were proceeds of crime, Superintendent Dyson said.

The detective, who is heading Strike Force Carnarvon, said that two senior union officials may be charged over this matter.

He also said that one other person is facing charges relating to Mr Williamson’s alleged attempts to hinder the police investigation.

Earlier this month the former national president of the ALP was arrested and charged by the detectives from Strike Force Carnarvon. Mr Williamson, 59, was charged with 20 offences most of which were related to hindering police who have been investigating allegations that Mr Williamson and Federal MP Craig Thomson received secret commissions from a supplier to the union.

Mr Williamson, who may face additional charges in the future, will be back in court on January 24.