Senior officials in local authorities and top health service executives will seek pay increases of between 10 and 12 per cent, under a review of remuneration at upper levels in the public sector, Martin Wall.
About 1,700 hospital consultants will also submit a claim for a double digit increase in salary as part of the review.
Cabinet Ministers, judges, senior civil servants and top Army and Garda officers are also in line for a pay rise as part of the review of higher remuneration in the public service.
Groups have a deadline of tomorrow to make submissions to the review, which is to be chaired by C&C Group chairman Tony O'Brien.
In April the Government invited the review group to issue interim recommendations by June if it was satisfied that "serious anomalies or inequities exist". The review body advertised for submissions several weeks ago.
The review is scheduled to issue a final report by 2007.
It is understood that top local authority and health service executives will seek a pay rise of around 10 to 12 per cent.
It is expected that the trade union Impact will argue that a "pay drift" of 1.5 per cent to 2 per cent a year since the last review group report in 2000 would mean that senior public sector officials had fallen behind comparators in the private sector.
Local authority county managers receive salaries ranging from just over €100,000 to €150,000 a year.
Senior officials of the Health Service Executive (HSE) are also paid over €100,000.
The new chief executive of the HSE is expected to receive a package in excess of €300,000 when he takes up office later in the year.
The largest group to be covered by the pay review are hospital consultants and they are also expected to seek a substantial award.
Both the Irish Hospital Consultants' Association and the Irish Medical Organisation, which both represent senior hospital doctors, are to consider their submissions later today.
It is understood that both organisations will be looking for double digit increases.
The director of industrial relations at the Irish Medical Organisation, Fintan Hourihan, said it will be telling the review body that a previous 10 per cent increase in 2000 was supposed to be only an interim award pending negotiations on a new contract.
However, for various reasons these talks never got under way.
Mr Hourihan said the Irish Medical Organisation would also argue that productivity in hospitals had increased significantly.
"The number of day cases carried out in hospitals increased by 60 per cent between 1999 and 2004, while the number of patients treated in public hospitals rose by 27 per cent during the same period," he said.
Hospital consultants are currently paid between €122,000 and €154,000 for their public hospital commitments.
It is understood that Ministers will not be making a submission to the review body for a specific pay increase although they are likely to benefit from any award made. Cabinet Ministers, who received increases of more than 20 per cent under the previous review, earn about €140,000 a year.
Trade union sources said it was expected that the review body would commission an outside consultancy to examine whether an interim pay award was justified and if so what the amount should be.
Some trade union sources expect that the review body would be more likely to offer a set interim award running into high single figures across the board rather than make recommendations for each group.
Trade union sources said the review body could make individual recommendations for further rises in its final report in 2007.
TDs, who received a 19 per cent pay increase under the last review in 2000, will not be covered on this occasion, as they were included in the benchmarking process.