Employer Contributions and Vesting
In 401(k) plans, employers may contribute matching or profit-sharing funds. However, these funds often come with a vesting schedule. That means your ex-spouse might not be entitled to the full balance unless the participant was fully vested as of the couple’s cutoff date (usually the date of divorce or separation).
The QDRO can’t award funds that the participant does not legally own yet. To avoid disputes, identify the participant’s vested percentage as of the division date.

