More than two million people have been auto-enrolled into a workplace pension scheme, according to The Pensions Regulator (TPR).
The auto-enrolment (AE) of staff at the British Heart Foundation helped push this number to another milestone ahead of implementation across small and medium-sized employers (SME) next year.
Pensions minister Steve Webb said: "It is great news that AE is beginning to make a positive difference to the retirement prospects of workers.
"The changes to workplace pensions being introduced now are set to help millions more people to achieve many happy new years in the future."
TPR's December registration report showed more than 3,500 employers have now joined the workplace pensions initiative, which began in October 2012.
Prior to the launch of AE, Webb said it would be crucial to get sceptical 20-somethings investing in a pension.
TPR executive director of AE Charles Counsell urged employers preparing for AE to check their staging date as soon as 2014 begins.
He said: "The clock is ticking and if employers don't plan ahead, they could face unnecessary challenges and costs in the New Year."
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