The Workplace Relations Commission has invited Government representatives and unions to resume public sector pay talks next month.

Negotiations ended without agreement in June after unions rejected a pay offer from the Government claiming it fell far short of inflation.

Earlier, unions said they would ramp up preparations for industrial action in a bid to secure an improved public sector pay offer.

The Public Services Committee of the Irish Congress of Trade Unions met today and agreed to mount a coordinated union campaign on public service pay backed by industrial action ballots.

ICTU President Kevin Callinan said unions were united in their resolution to achieve a credible public service pay offer.

Speaking on RTÉ's News at One, Mr Callinan said that they would need to know that the Government’s position had changed.

He said that ICTU is prepared to do "whatever it takes" with regard to potential strike action.

"Nobody wants to be in this situation. We're perplexed that we’re getting the mixed messages that have been emanating from government. We want to try and negotiate a deal.

"We made it very clear that when talks were adjourned in the early hours of Friday, 17 June that our position was negotiable.

"The difficulty that everybody encountered was that the Government’s position was fixed.

"We’ve been waiting for the last six weeks to see would there be some change in that. In that period, we’ve had mixed messages coming from different government figures. In the meantime, we’ve seen inflation rise again up to 9.1%.

"When we started this process back in March, when we triggered the review, inflation was at 5.6%.

"What we want is a fair deal. What we want is a review of the current agreement which ran from 2021 to 2022.

"It provides two general round increases of 1% in October of each year. We’re now looking at inflation for the two years to be cumulatively around 11%.

"What we want is to close the gap between an inflation rate of near 11% over the two years and what the government offered.

In March, unions and staff association triggered a review clause in the current public sector pay deal 'Building Momentum' due to rising inflation.

A spokesperson for the Department of Public Expenditure and Reform said that the Government welcomed and accepts the invitation of the WRC to resume talks.

"As Minister Michael McGrath has said from the outset, the aim of the Government is to reach agreement on terms that are fair to public servants and to taxpayers generally. Achieving this will require goodwill and a degree of flexibility on both sides," the spokesperson said.

At last month's pay talks, the Government offered a 2.5% pay increase this year and a further 2.5% next year but unions rejected the deal.

The Minister for Public Expenditure and Reform said yesterday that both sides in the talks will need to be flexible in order for a realistic agreement to be reached.

"Both parties have to stretch themselves, that is a reality," Michael McGrath said.

He said that public servants deserve a pay increase, but that the Government would not chase inflation.