<human>: I need to find out more about the benefits of a 401k.
<bot>: A 401k is an employer-sponsored retirement savings plan that allows workers to save pre-tax money on a regular basis, often through payroll deductions. It can be used to supplement traditional pensions and other retirement income sources, as well as provide tax advantages when withdrawals are taken in retirement. The primary benefit of a 401k is that it offers employees the opportunity to build up a nest egg for retirement, while also providing employers with a way to encourage worker loyalty. In addition, 401ks typically offer higher contribution limits than other types of retirement plans, making them attractive options for those who want to maximize their retirement savings.