As firefighters across England and Wales prepare to stage a 24-hour walk-out, a spokesman for the Department for Communities and Local Government said that a solution can be reached "but not under the shadow of industrial action."
The deal on the table is fair and gives firefighters one of the most generous pensions in the public sector.
Additionally, the proposals protect the earned rights of a higher proportion of members than any other public sector scheme.
Nearly three-quarters will see no change in their pension age in 2015.
Under the new scheme, a firefighter who earns £29,000 will still be able to retire after a full career aged 60, get a £19,000-a-year pension, rising to £26,000 with the state pension.
The equivalent private pension pot would be worth over half a million pounds and require firefighters to contribute twice as much.
TUC general secretary Frances O'Grady said:
It is regrettable that the Government is still not listening to its own advice or the concerns of firefighters, and is set on imposing these ill-thought out pension changes.
Firefighters do incredibly dangerous and demanding jobs. The public - which has nothing but the utmost respect for our emergency services - will be at a loss to understand why ministers think that at 60 firefighters will still have the necessary strength and stamina to rescue people from burning buildings.
From 9am today, firefighters across England and Wales will stage a 24-hour strike today in their long-running dispute with the Government over pensions.
Another strike will be held on June 22 as their dispute over pension reforms and retirement age remains deadlocked.
FBU general secretary Matt Wrack accused the Government of refusing to negotiate, adding that firefighters were determined to continue with their campaign.
Firefighters have been warned by the union that they face significant pensions cuts and working until later in life before retiring.
Council workers are to be balloted for strikes over pay and will walk out on July 10 if they vote in favour, said the GMB union.
Strike action will damage the reputation of teaching, a Department for Education spokeswoman has said, as the National Union of Teachers are today expected to back fresh walkouts in the summer if progress is not made in resolving a bitter dispute over pay, pensions and conditions.
Ministers have met frequently with the NUT and other unions and will continue to do so. Further strike action will only disrupt parents' lives, hold back children's education and damage the reputation of the profession.
We know that the vast majority of our teachers and school leaders are hard-working and dedicated professionals. That is why we are giving teachers more freedoms than ever and cutting unnecessary paperwork and bureaucracy.
An advanced GCSE maths extension paper set by one exam board is scheduled to take place on Wednesday June 25, during a potential teachers' strike.
Exam timetables show that at least a dozen GCSE and A-level papers are due to be sat by students on the first two days of the week proposed in the National Union of Teacher's resolution. NUT general secretary Christine Blower said:
This week has been deliberately chosen because we believe that there will be no exams beyond those dates.
Strike action will not disrupt exams. If necessary, exemptions can be given got staff who are needed to supervise an exam, but the NUT is looking to take action at the end of the main exam season.
Teachers are today expected to back fresh walkouts in the summer if progress is not made in resolving a bitter dispute over pay, pensions and conditions.
Delegates at the National Union of Teachers (NUT) annual conference in Brighton are due to debate a priority motion seeking co-ordinated national strike action in the week beginning Monday June 23.
The move comes just weeks after the NUT staged a national walkout, and raises the prospect of widespread disruption to thousands of schools in England and Wales in the summer term.
All 113 London fire stations are joining the national strike later in a dispute over changes to pension schemes.
The 5500 firefighters across the capital will go on strike between 7pm and midnight.
The London Fire Brigade say a contingency plan is in place.
The Government will hear this week if it faces the threat of the first national firefighters' strike for a decade, in a row over pensions.
Members of the Fire Brigades Union have been voting on whether to launch a campaign of industrial action, with the result due at the end of the week.
The union said planned changes were "unaffordable and unworkable", would impose an increase in members' contributions and would put firefighters at greater risk of dismissal without access to a proper pension if they cannot maintain fitness standards as they approach the retirement age of 60.
A union leader has confirmed he is in talks with counterparts about staging a general strike.
Mark Serwotka, general secretary of the Public and Commercial Services Union (PCS), said discussions were under way about action that would show people can "fight back".
It comes after it emerged last week that Unite had submitted documents to the TUC calling for a 24-hour general strike against austerity measures.