Unvested Employer Contributions
The Tablet Inc.. 401(k) Plan may include employer matching contributions that are subject to a vesting schedule. This means that only the vested portion is divisible at the time of divorce. Unvested employer contributions generally revert back to the employer unless the participant works long enough to become fully vested. Your QDRO should explicitly clarify that the alternate payee (the non-employee spouse) is only entitled to the vested balance unless otherwise agreed.

