Employee and Employer Contributions
The QDRO must distinguish between amounts contributed by the employee and those contributed by the employer. This is especially important if employer contributions are subject to a vesting schedule, which is common in business-sponsored 401(k) plans like this one.
For example, if the employee is only 50% vested in employer contributions at the time of separation, the alternate payee’s share should reflect only the vested portion. Any unvested funds will likely be forfeited unless the employee works longer and becomes vested.

