Vesting and Employer Contributions
401(k) plans often include both employee and employer contributions. While employee contributions are always 100% vested, employer contributions may be subject to a vesting schedule. This means your ex-spouse may not be entitled to the full employer match if you weren’t fully vested at the time of divorce.
The QDRO should be carefully drafted to reflect whether the alternate payee will share in employer contributions only to the extent they were already vested on the date of division. If not, it can lead to delays or rejection by the plan administrator.

