One of Labour's first moves after taking office last year was the announcement of a pension review.
In November the chancellor floated her "megafunds" plan, which covers retirement savings for the majority of UK workers in two ways.
Firstly, there are the 86 different local authority pension schemes, which provide for more than six million people in their retirement, the majority low-paid women. The £392bn in these defined benefit schemes will be merged in just six asset pools by March next year.
In a defined benefit scheme a worker pays into their pension and is paid a pre-determined amount based on their salary and length of service.
Local investment targets will be agreed for local authority pension schemes for the first time, the Treasury said.
Secondly, defined contribution schemes currently worth £800bn, and covering millions of other private and public sector workers across the country, will also be consolidated.
In defined contribution schemes workers are not guaranteed a specific amount. Instead their pension depends on the performance of the fund in the years before retirement.
By 2030 the government says there should be more than 20 pension funds worth more than £25bn, in contrast to the current 10.
As part of the voluntary agreement, known as the Mansion House accord, agreed earlier in May, the 17 firms involved committed to investing 10% of their assets in things other than publicly traded shares, so that more money would flow into homebuilding, infrastructure projects and start-up businesses in fast-growing sectors.
In addition, 5% of investments will be earmarked to go into UK assets.
The reforms will form part of the Pension Schemes Bill, about to go before Parliament.