Employee vs. Employer Contributions
401(k) plans often contain both employee deferrals and employer matching contributions. The QDRO must clearly state whether the alternate payee is receiving a share of just the employee contributions, or both employee and employer portions.
For the Mm Usa 401(k) Plan, it is standard to divide contributions accrued during the years of the marriage. However, if employer contributions were subject to a vesting schedule, the alternate payee may only receive the vested portion.

