1. Employee vs. Employer Contributions
401(k) plans usually include employee deferrals and employer matching or profit-sharing contributions. In this divorce situation, it’s common to divide only the marital portion of the account—often measured from the date of marriage to the date of separation or divorce filing.
Many employer contributions are subject to a vesting schedule, which can impact what’s actually available to the alternate payee. If your QDRO wrongly includes unvested employer contributions, the administrator could reject it or pay less than expected. Be sure your order is drafted with clarity on these divisions.

