Employee vs. Employer Contributions
Not all funds in a 401(k) are created equal. The employee portion (contributions made by the participant) is always 100% vested. But employer contributions are often subject to a vesting schedule — meaning not all of those funds may be available for division if your spouse is not fully vested.
The QDRO must make clear whether employer contributions are included and whether only vested amounts apply. If your divorce decree is silent on this, it can delay or even derail the QDRO process.

