1. Employee and Employer Contributions
With 401(k) plans, both the employee and the employer might contribute to the total balance. Some employer contributions are subject to vesting schedules, which means they may not be fully available for division unless they are vested by your key QDRO date.
Always verify what portion of the employer contributions is vested. If they’re not fully vested, those unvested amounts usually revert to the plan and cannot be divided.

