Almost 100pc of staff considered good workers
Public servants' performance is measured on being 'satisfactory' - and nearly 100pc of them are considered to be so.
But it is unclear how their productivity will be measured if the Government agrees to pay rises at talks on a new public sector pay deal.
The first report of the Public Service Pay Commission this week said pay hikes must be contingent on productivity.
And it has emerged that the National Competitiveness Council has warned the commission that measuring productivity properly is "vital" if pay hikes are given.
A row is already likely to emerge at the talks due to begin around May 22 on one of the biggest productivity measures agreed under a previous deal in which public servants work 15 million unpaid hours.
Unions are battling to have the hours abolished although Public Expenditure Minister Paschal Donohoe has indicated it is a red-line issue.
The chairman of the National Competitiveness Council, Professor Peter Clinch, said securing, measuring and delivering real improvements in productivity levels and services must play a central role if pay rises are given.
He said productivity is not necessarily about working harder or longer hours, but working smarter, including supporting workers through training.
The Department of Public Expenditure and Reform said 99.5pc of civil servants were rated "satisfactory" under its performance management system in 2015.