Employee vs. Employer Contributions
Most 401(k) plans include both employee contributions (what the participant personally contributes) and employer matching or discretionary contributions. The QDRO should specify how each of these are divided. Frequently, employer contributions come with a vesting schedule—meaning the employee must remain with the company for a certain period before those contributions legally belong to them.
If some employer matches are unvested at the time of divorce, the alternate payee may receive a reduced share. It’s important to determine exactly what was vested as of the “cutoff date” in the divorce. This reduces confusion and ensures a fair division.

