KEY POINTS
  • A 401(k) match is a common type of employer contribution made to a worker's retirement plan.
  • Companies set "vesting" schedules that dictate how long it takes for matching contributions to fully belong to the worker.
  • In 30% of 401(k) plans that offer a match, it can take up to five or six years, according to data from the Plan Sponsor Council of America.

A 401(k) match from an employer is often referred to as "free" money, and therefore one of the best ways to juice retirement savings.

But there's a catch — you may need to wait up to six years before it fully belongs to you.