Many employers offer a matching contribution, which means they will contribute a certain percentage of an employee's contribution to the plan.
401(k) plans offer a variety of investment options, including mutual funds, index funds, and target-date funds. Participants can choose their own investment mix based on their risk tolerance and retirement goals.
401(k) plans offer portability, meaning that employees can take their savings with them if they change jobs. Some 401(k) plans allow for loans, which can be a useful source of emergency funds.