Employee Contributions vs. Employer Contributions
In a 401(k) plan, the account may consist of two main types of contributions—those made by the employee (your spouse or you) and those made by the employer. These must be treated separately in a QDRO. Employee contributions are usually 100% vested immediately, but employer matches often come with a vesting schedule. This means a portion of the account may not be fully owned by the participant at the time of the divorce if they haven’t met length-of-service requirements.
The QDRO can only divide benefits that are actually vested. If the plan participant has any unvested employer contributions, those will likely be forfeited if they leave employment prematurely or before full vesting occurs.

