Employee vs. Employer Contributions
Most 401(k) plans are funded via both employee deferrals and employer contributions. A proper QDRO should clearly state whether the division applies to just the participant’s contributions or also includes the company match or profit-sharing amounts.
Keep in mind that employer contributions may be subject to vesting—which determines how much the employee is actually entitled to based on their time with the company. Your QDRO should address whether the alternate payee (non-employee ex-spouse) will receive only vested amounts or a proportion of everything accrued during the marriage, vested or not.

