Just one in twelve whistleblowers who took a complaint against their employer won their cases over the last three years.
That's one of the findings of a review by Transparency International of calls to its whistleblower helpline.
Two in five whistleblowers working in healthcare faced retaliation -- followed by 38 per cent in policing and 30 per cent in finance.
Transparency International says corruption in Ireland usually takes a very different form to demands for bribes.