1. Employer Contributions and Vesting Schedules
Most 401(k) plans—especially those sponsored by business entities in the general business sector—include a vesting schedule for employer contributions. That means not all employer contributions belong to the participant immediately. When preparing a QDRO, you must:
- Determine what portion of employer contributions are vested as of the date of divorce or other agreed-upon valuation date
- Exclude unvested amounts unless the plan permits later vesting for alternate payees (rare but possible)
- Understand the plan’s forfeiture policy, because unvested employer contributions may be lost if the employee separates before full vesting

