Employee vs. Employer Contributions
In most 401(k) plans, both the employee and employer contribute. But employer contributions often have vesting schedules. If your spouse has only worked at Unknown sponsor for a few years, they might not be fully vested.
Your QDRO must clearly state whether you’re sharing only the vested portion or if it includes future vesting. Be cautious—if you ask for a share of unvested benefits and the participant leaves the job before vesting, you may receive nothing unless the plan allows for separate set-asides.

