Research, gathered for the TUC Congress debate on pensions, shows between 2005 and 2008 there was a 5% drop in people in the private sector who are DB scheme members but during the same period the increase in DC scheme membership was just 1.9%.
According to the TUC, this means the proportion of the workforce without a pension has risen from 54.6% in 2000 to 62.6% in 2008.
TUC general secretary Brendan Barber said: "The real scandal is that nearly two-thirds of private-sector workers are ‘unpensioned' - without any kind of employer-backed pension, even one with a tiny contribution from their boss.
"No wonder employer groups are so keen to attack public-sector pensions. It is a good diversion from the continuing retreat by employers from providing any kind of pension."
