Employee vs. Employer Contributions
When dividing a 401(k), it’s important to distinguish between contributions made by the employee and those made by the employer. In many cases, only the employee contributions are fully vested. Contributions from the employer may be subject to a vesting schedule—meaning the employee must work a certain number of years before fully owning those amounts.
If a divorce occurs before full vesting, only the vested portion can be divided. Your QDRO should clearly indicate how the division applies to unvested amounts. A poorly drafted QDRO that includes unvested funds could be rejected or altered by the plan administrator.

