Queensland's police commissioner has confirmed a review of the force involves considering sacking some senior officers.
Police Commissioner Ian Stewart said on Thursday that redundancies were being considered, but there would not be a net reduction in police numbers.
"I can confirm the issue of redundancies for some commissioned officers has been considered," he said in a statement.
"However, should the redundancies be approved, an equivalent number of lower rank positions will be created to ensure no net loss of police officers in Queensland."
The findings of the review are set to be unveiled on Monday. Media reports say the review recommends up to 400 positions, including 150 senior officers, be cut by natural attrition or voluntary redundancies.
The Queensland Police Service (QPS) said only about 212 positions would need to be made redundant.
Together, the public sector union, believes any job cuts will endanger communities, even if they are administrative positions.
"That work would have to be done by an officer who could be out on the beat," Together secretary Alex Scott told reporters.
"What we are seeing is more and more money being dragged out of the police service, which will ultimately result in an unsafe Queensland."
Acting Opposition Leader Tim Mulherin expects the review to recommend the number of QPS regions be reduced from eight to five, which he said would weaken the links between the police and communities across the state.
Mr Mulherin questioned the need for another review of the QPS and emergency services, led by former federal police commissioner Mick Keelty, which will begin its work soon.
"What is the point of two reviews of the QPS?
"The minister needs to explain why he is second guessing either the police commissioner or Mr Keelty."
The Queensland Police Union wouldn't comment on the reviews, with a spokesman telling AAP it was "sworn to secrecy".
In September, the government denied senior police jobs were on the line.
"No senior police officers are going to be asked to leave the service," a spokesman for Police Minister Jack Dempsey told AAP at the time.
The government plans to recruit 1100 new officers over four years and move 200 back onto the beat.