1. Unvested Employer Contributions
In many 401(k) plans, employer contributions (such as match or profit-sharing) are subject to a vesting schedule. This means the employee earns full rights to those contributions over time, often based on years of service. Unvested funds can revert to the employer if the participant leaves the company early, and are not subject to division in a QDRO—unless already vested by the cut-off valuation date chosen in the divorce.

