MSPs are due to consider a progress report over reforms to Scotland's police and fire services.
The country's eight existing police and fire services are being merged into new national forces to cover all of Scotland.
But there has been a power struggle over the governance of certain administrative functions in the new single police force.
Both Stephen House, the chief constable of the Police Service of Scotland, and Vic Emery, chairman of its scrutiny body the Scottish Police Authority, have sought legal advice over who controls police support staff under the terms of the Police and Fire Reform Act.
Last month, Justice Secretary Kenny MacAskill told MSPs that the two had almost resolved the issue, describing them as being "95% there".
MSPs on the Scottish Parliament's Justice Committee will consider an update on both police and fire reforms when they meet later.
In a letter to the committee, Mr MacAskill confirmed a range of regulations would be laid at Holyrood in the next two months, to set the operation terms and conditions for officers.
Mr MacAskill said these regulations were required to ensure all constables transferred over to the new Police Service of Scotland without any detrimental effect on their terms and conditions.