Union official in bikie gang: report

A high-profile union official for the CFMEU has been named as a member of the Rebels motorcycle gang by Melbourne newspaper the Herald Sun.

Photos have emerged showing shop steward Stu-e Corkran dressed in a Rebels jumper, and with a bikie logo shaved into the back of his hair.

The CFMEU initially denied that Mr Corkran was in a motorcycle club, but later released a statement qualifying the remarks.

"We understood he was not a member," they wrote.

"We are not sure if the photographs establish him as a member.

"We don’t inquire into members' affiliations with other organisations — recreational, political, religious or other."

Mr Corkran has been a significant figure in the union for more than a decade, the newspaper reports.

He won the union's "Biggest Loser" competition three years ago, collecting a $5000 cheque after dropping 20.8kg.

He was charged in connection to the West Gate Bridge demarcation dispute but the charges were dropped in a plea deal.