A review of the way Victoria's top anti-corruption body is treating police officers under investigation has been triggered by the Police Association.

The union has raised concerns with the Independent Broad-based Anti-corruption Commission, as well as IBAC's oversight body, the Victorian Inspectorate, about the treatment of police who are the subject of IBAC's coercive hearings.

Association assistant secretary Inspector Bruce McKenzie said members under investigation had fewer rights than civilians.

"The legislation governing IBAC means our members can't confide in their partner, they can't confide in family members and perhaps what equally worries us is they can't confide in their doctor and tell their doctor the reason they may be not well, the reason their psychological well being is at risk," he said."

"Our members when they're investigating crimes committed by members of the public are expected to treat everyone that they come across in their investigative work with decency, with reasonableness and with fairness and we expect no less of one of the peak investigative bodies in the state, and that is IBAC. "

Inspector McKenzie said IBAC had taken the concerns on board and the association hoped that would manifest in members being treated fairly during IBAC's investigative process.

"The Police Association of course doesn't condone corrupt activities or serious criminality on the part of our members, but we would certainly expect that our members who get caught up in IBAC investigations are treated in a decent, reasonable and fair way."

The association also intends to bring its concerns to the attention of the Victorian Government, asking that legislation be amended to allow members under investigation to at least confide in their partner, family and medical practitioner.