The union said the newspaper groups decision was even more surprising given the Mirror Group pension fund theft when under the control of Robert Maxwell.
But a spokesman for Trinity Mirror said: It is a way of controlling costs way into the future - we are talking well over the horizon. All existing plans are performing well and are not affected.
The union will consult with its members and raise the issue with MPs, government ministers and the TUC, according to national officer Chris Harding.
Existing Trinity Mirror staff have until 28 February to join the schemes.
New employees will be offered a new plan, to which the companys contributions and costs are estimated to be 12% of each employees salary.
We believe that the new scheme is fair and equitable. It show the companys commitment to providing for its employees, said the spokesman.
Have your say in the Printweek Poll
Related stories
Latest comments
"Gosh! That’s a huge debt - especially HMRC! It’s a shock that HMRC allowed such an amount to be accumulated."
"Whatever happened to the good old fashioned cash job! At least the banks didn't take 2-3% of each sale. After 30 odd transactions that £100 quid you had has gone."
"It's amazing what can be found on the "web" nowadays!"
Up next...
Replacement 'will be operational later this year'
Walstead makes decision on Bicester 64pp
'Ridiculous decision'
Unite “prepared to fight” on proposed DS Smith site closure
Also helps mitigate volatile energy prices
