The Public Service Pensions Bill 2013 will today be announced in parliament amid controversy over major strike action by unions.
The Bill, being formally presented to parliament as it enters its final stage, will detail the change from final salary to career average pension schemes. It also states the linking of the normal pension age of civil servants to the state pension age (excluding police and armed services).
The Office of Budget Responsibility has estimated that the reforms will reduce the cost of public service pensions by 40% over the next 50 years.
Treasury chief secretary Danny Alexander described the reforms as "a settlement for a generation".
"This is a good deal for taxpayers and a good deal for public service workers," he added.
The Treasury said the reforms bring long term sustainability "while ensuring that public service pensions remain amongst the very best available".
This announcement comes days after the Trades Union Congress (TUC) announced coordinated strike action over the government's refusal to re-negotiate on pensions and pay reform.
In reaction to strike threats, Alexander said that the government should not pay attention to the "rhetoric at [the unions'] conferences", and suggesting that the unions are "willing to behave responsibly".
These reforms are separate to the LGPS 2014 which is now under consultation after unions voted in favour of an agreed structure.
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