Employee vs. Employer Contributions
Employee contributions are always fully vested and can usually be divided without issue. Employer contributions, however, may be subject to a vesting schedule. If your spouse hasn’t worked with the Unknown sponsor long enough, some of those funds may not be awarded in a QDRO. A good QDRO will make clear whether the alternate payee (you, the former spouse) is entitled only to vested amounts, or whether other language applies.

