1. Vesting Schedules and Employer Contributions
Many 401(k) plans include employer matching contributions that vest over time. If the participant isn’t fully vested at the time of the divorce, the unvested portion may not be available for division. Check the latest plan statement or SPD for the vesting schedule.
If the participant leaves the company and forfeits unvested funds, a QDRO can’t override those forfeitures. That’s why timing is critical—make sure the QDRO is processed while the participant is still working, if possible.

