Employee vs. Employer Contributions
In a 401(k), there are typically two types of contributions: employee deferrals and employer matches. Both may be marital property depending on when they were earned. However, employer contributions may have a vesting schedule. If your QDRO mistakenly awards unvested amounts, those funds might be later denied by the plan.
Best practice: Have the QDRO account for vested vs. unvested balances by using language that awards only the vested portion as of the division date—or awards what becomes vested in the future, depending on your negotiation strategy.

