1. Employee and Employer Contribution Breakdown
401(k) plans generally consist of two major sources of funds: amounts the employee has contributed from their paycheck, and any matching or profit-sharing contributions made by the employer. In a divorce, both types of contributions earned during the marriage are typically included in the marital estate—unless state law or a prenuptial agreement says otherwise.
However, only contributions that are fully vested can be awarded to a former spouse. This is a key distinction that often causes issues if overlooked. If employer contributions are subject to a vesting schedule, unvested amounts may be lost depending on the participant’s service years at the company.

