1. Employee vs. Employer Contributions
Employee contributions (your own deferrals) are always 100% vested and can be divided in a QDRO without complication. Employer contributions, on the other hand, may be subject to a vesting schedule. If your spouse isn’t fully vested, they may not be entitled to the full employer match.
Your QDRO needs to determine whether to divide only vested amounts or also include potential future vesting. Most plans distribute only what’s vested at the time of distribution, but a properly drafted QDRO can preserve the alternate payee’s rights to the vested portion as it matures—if allowed by the plan.

