Employee vs. Employer Contributions
401(k) plans typically include both employee salary deferrals and employer contributions. One major QDRO question is what portion of the account is marital property. In most cases, contributions made during the marriage—by either spouse or the employer—are subject to division.
However, employer contributions may be subject to a vesting schedule. If an employee is only partially vested at the time of divorce, the non-vested portion won’t be included in the amount awarded to the alternate payee (the spouse receiving the benefit). It’s critical to confirm these amounts with the plan administrator before finalizing the QDRO.

