Employee and Employer Contributions
In most 401(k) plans, employee contributions are fully vested immediately, meaning they belong to the employee as soon as they’re made. Employer contributions, however, may be subject to a vesting schedule—often tied to years of service. This means some of the account balance may not be divisible if the employee has not worked long enough to vest.
The QDRO must clearly define whether the alternate payee (typically the non-employee spouse) is to receive a portion of just the vested account balance or also a portion of any future vesting. This is an area where QDRO precision is crucial.

