Over two-thirds of the eligible population are saving into a workplace pension, reaching a new all-time high, according to the Office for National Statistics (ONS).
The figure is largely due to the continued rollout of auto-enrolment (AE), which began in 2012 and has seen the number of people enrolled soar from 47% at the time.
It is also the highest figure since 1997, when records began, and 55% of workers were members of schemes.
The number is likely to grow even higher as staging for AE draws to a close, and workers in the gig economy are granted the right to be auto-enrolled.
More than two in five workers (42%) are members of occupational defined benefit (DB) schemes, while 27.6% are members of occupational defined contribution (DC) schemes.
However, the stark difference between private and public provision is again illustrated, with 94.1% of public workers in DB schemes compared to 14.9% of private sector employees.
The majority of private DC schemes received employer contributions of less than 4% and employee contributions of less than 2%. This includes a small number of employers and employees that are paying nothing into their scheme, at 1.3% and 6% respectively.
The data suggests many of these schemes are at the statutory minimum levels of 1% employee contributions and 1% employer contributions.
Just 6% of employees were paying more than 7% of pay into their scheme, although 19.7% of employers were paying more than 8%.
In contrast, the majority of DB schemes received employer contributions in excess of 15%, and employee contributions of more than 6%.
The figures have yet again raised concerns that auto-enrolled savers will not have an adequate pot in retirement.
Former pensions minister Sir Steve Webb, who is now Royal London's director of policy, called on the 2017 review of AE to consider how to address this problem.
"The way things are going, by the time AE is complete, around half of all private sector works will be paying at or around the statutory minimum level of contributions," he said. "Even when the statutory minimum rises to 8%, this is still far too little for most people on average earnings or above to have an acceptable standard of living in retirement.
"Millions of people face a disappointing retirement unless the government takes action to get contribution rates up. The 2017 review of AE provides an ideal opportunity to address the issue as a matter of urgency, rather than kick it into the long grass."
However, the data also shows a considerable lack of take-up for part-time workers, due to many not meeting the minimum earnings trigger of £10,000 for AE.
Just 47.4% of part-time workers across the public and private sector are members of pension schemes. In the private sector this falls even further to just 34.7%.
The data will add fuel to arguments that the 2017 AE review needs to reconsider the minimum earnings trigger, and find a way to include workers that earn over the trigger but through multiple jobs and are excluded.
Trades Union Congress (TUC) general secretary Frances O'Grady voiced her worries about the low proportion of part-time workers saving into pensions.
"It's very worrying that millions of part-time workers don't have pensions," she said. "Women make up the majority of the UK's part-time workforce, and are at huge risk of pensioner poverty.
"A decent retirement income should be open to everybody - not just men in traditional full-time work. Yet many employers are exploiting loopholes to leave part-timers out.
"The government's review of AE must ensure that low-paid and part-time workers have access to pensions, and have a decent standard of living in old age."
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