Employee vs. Employer Contributions
This 401(k) plan likely includes both employee deferrals and employer-matching contributions. When dividing the account, you’ll want to know if employer contributions are fully vested. In many corporate 401(k) plans, employer matches are subject to a vesting schedule.
If any employer contributions are not vested at the time of division, those amounts won’t be included in the alternate payee’s share. The QDRO should clearly define how to handle unvested amounts and whether the alternate payee is entitled to forfeitures that later vest.

