Tasmania’s chief integrity commissioner says there is serious misconduct in the public service right now, but it will never be investigated if the watchdog’s powers are reduced.

The Tasmanian Government has signalled that it wants to strip the body of its investigative powers, claiming it is expensive and inefficient, but chief commissioner Murray Kellam says the Government's call is “absurd, fanciful and naive”.

A parliamentary committee has been looking into the role and functionality of the Integrity Commission, and will hand down its report next month.

While the Government wants it reduced, the head of the corruption watchdog says investigations would be impossible through any other channel.

Mr Kellam points out that it would leave Tasmania’s police force as the only one in the country with no independent oversight.

He said whistleblowers would have not proper channels through which to complain either.

“Make no mistake, if the investigative functions of the commission are removed it will not be an integrity commission, the Tasmanian community will be misled into believing that they have a safeguard that they in fact do not have,” he said.

“We've got plenty of evidence of misconduct and we've got plenty of evidence of serious misconduct.

“Under the Government's proposal I think there'll be less people prepared to make complaints... I doubt you'll get the whistleblower [anymore],” Mr Kellam said.

He added that the Government's proposal to cut costs by hiring an inspector-general was absurd, because it would end up being even more costly.