Employee vs. Employer Contributions
Employee contributions are generally always 100% vested and can be divided. However, employer contributions may be subject to a vesting schedule. If your ex-spouse hasn’t met the required years of service, some employer contributions may not be available to you and could revert to the plan.
Make sure your QDRO clearly distinguishes between vested and unvested portions. If you’re not careful, you might be awarded a share of money your ex-spouse doesn’t actually own.

