Employee and Employer Contributions
One of the most important elements in dividing this plan is the split of contributions. Employee deferrals are always fully vested and can be divided. However, employer contributions may be subject to a vesting schedule.
If your QDRO awards a percentage of the whole account (including unvested employer funds), the non-vested portion may not actually be payable. That needs to be clarified clearly in the QDRO to avoid disputes or unenforceable orders.

