Employee and Employer Contributions
401(k) plans contain contributions made by the employee (participant) as well as those made by the employer. Typically, employee contributions are fully vested immediately, but employer contributions usually follow a vesting schedule. Your QDRO must specify whether the alternate payee (the spouse receiving a portion of the account) is only entitled to vested amounts or also to future vesting.
For the Cerenity Senior Care 403(b) Plan, since the employer is a General Business Entity, it’s likely subject to standard ERISA retirement plan rules. If the employee wasn’t fully vested at the date of divorce, any unvested employer matching may be forfeited unless accounted for properly in the QDRO.

