Employee vs. Employer Contributions
Most 401(k) plans include both employee and employer contributions. Employee contributions are typically 100% vested, meaning the participant owns them outright. Employer contributions, however, may be subject to a vesting schedule. This means some of those funds may not be available to divide if the participant isn’t fully vested at the time of divorce.
For example, if the employee has only worked at Merchant industry LLC 401(k) profit sharing plan & trust for three years and the plan uses a five-year vesting schedule, 40% of the employer contributions might still be unvested. Those unvested amounts will eventually be forfeited if the participant leaves the company or may become vested based on future service.
The QDRO can handle this by either dividing only the vested balance as of a certain date or assigning a percentage of the vested portion as it becomes available. The approach depends on your goals and the divorce settlement.

