Employee vs. Employer Contributions
Employee contributions—amounts deducted directly from paychecks—are always 100% vested. If your spouse contributed $50,000 over the years, that portion is accessible under a QDRO.
Employer contributions, on the other hand, may be subject to a vesting schedule. For example, an employee might need to work for the company for three years to be fully vested. Any unvested amounts will be forfeited unless the employee remains with the company long enough.
In your QDRO, it’s critical to specify whether the alternate payee (the non-employee spouse) is awarded only vested employer contributions or both vested and later-vested amounts. Most plans will not extend vesting benefits to an ex-spouse unless clearly stated in the order and accepted by the plan.

